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Restore netstandard2.0 support for Mapster#849

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Merged
DocSvartz merged 2 commits into from
Feb 16, 2026
Merged

Restore netstandard2.0 support for Mapster #849

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da7258f
feat: netstandard2.0 support and test fixes
asp2286 Feb 1, 2026
ad1d0b7
fix: restore IMapFrom fallback mapping
asp2286 Feb 6, 2026
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4 changes: 4 additions & 0 deletions src/ExpressionDebugger.Tests/ExpressionDebugger.Tests.csproj
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Expand Up@@ -6,6 +6,10 @@
<IsPackable>false</IsPackable>
</PropertyGroup>

<PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
<TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
<PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
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4 changes: 2 additions & 2 deletions src/ExpressionDebugger/ExpressionCompiler.cs
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Expand Up@@ -125,10 +125,10 @@ from n in t.TypeNames
assemblyStream.Seek(0, SeekOrigin.Begin);
symbolsStream.Seek(0, SeekOrigin.Begin);

#if NETSTANDARD2_0 || NET6_0_OR_GREATER
#if NET6_0_OR_GREATER
return System.Runtime.Loader.AssemblyLoadContext.Default.LoadFromStream(assemblyStream, symbolsStream);
#else
return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
#endif
}

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4 changes: 2 additions & 2 deletions src/ExpressionDebugger/ExpressionDebugger.csproj
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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
<TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
<Authors>Chaowlert Chaisrichalermpol</Authors>
<Description>Step into debugging from linq expressions</Description>
Expand All@@ -25,4 +25,4 @@
<ItemGroup>
<ProjectReference Include="..\ExpressionTranslator\ExpressionTranslator.csproj" />
</ItemGroup>
</Project>
</Project>
4 changes: 2 additions & 2 deletions src/ExpressionTranslator/ExpressionTranslator.csproj
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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
<TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
<Authors>Chaowlert Chaisrichalermpol</Authors>
<Description>Translate from linq expressions to C# code</Description>
Expand All@@ -25,7 +25,7 @@
<None Include="icon.png" Pack="true" PackagePath="\" />
</ItemGroup>

<ItemGroup>
<ItemGroup Condition="'$(TargetFramework)' != 'netstandard2.0'">
<PackageReference Include="System.Runtime.Experimental" Version="6.0.2" />
</ItemGroup>
</Project>
6 changes: 3 additions & 3 deletions src/Mapster.Async.Tests/AsyncTest.cs
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Expand Up@@ -45,15 +45,15 @@ public async Task AsyncError()
}
}

[TestMethod, ExpectedException(typeof(InvalidOperationException))]
[TestMethod]
public void Sync()
{
TypeAdapterConfig<Poco, Dto>.NewConfig()
.AfterMappingAsync(async dest => { dest.Name = await GetName(); });

var poco = new Poco {Id = "foo"};
var dto = poco.Adapt<Dto>();
dto.Name.ShouldBe("bar");

Should.Throw<InvalidOperationException>(() => poco.Adapt<Dto>());
}

[TestMethod]
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12 changes: 8 additions & 4 deletions src/Mapster.Async.Tests/Mapster.Async.Tests.csproj
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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
<TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
<IsTestProject>true</IsTestProject>
<IsPackable>false</IsPackable>
</PropertyGroup>

<PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
<TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
<PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
<PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
<PackageReference Include="Shouldly" Version="4.2.1" />
</ItemGroup>

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2 changes: 1 addition & 1 deletion src/Mapster.Async/Mapster.Async.csproj
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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
<TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
<Description>Async supports for Mapster</Description>
<IsPackable>true</IsPackable>
<PackageTags>Mapster;Async</PackageTags>
Expand Down
31 changes: 17 additions & 14 deletions src/Mapster.DependencyInjection.Tests/InjectionTest.cs
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Expand Up@@ -31,23 +31,26 @@ public void Injection()
}
}

[TestMethod, ExpectedException(typeof(InvalidOperationException))]
[TestMethod]
public void NoServiceAdapter_InjectionError()
{
var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
var config = ConfigureMapping(expectedValue);
Should.Throw<InvalidOperationException>(() =>
{
var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
var config = ConfigureMapping(expectedValue);

IServiceCollection sc = new ServiceCollection();
sc.AddScoped<IMockService, MockService>();
sc.AddSingleton(config);
// We should use ServiceMapper in normal code
// but for this test we want to be sure the code will generate the InvalidOperationException
sc.AddScoped<IMapper, Mapper>();
IServiceCollection sc = new ServiceCollection();
sc.AddScoped<IMockService, MockService>();
sc.AddSingleton(config);
// We should use ServiceMapper in normal code
// but for this test we want to be sure the code will generate the InvalidOperationException
sc.AddScoped<IMapper, Mapper>();

var sp = sc.BuildServiceProvider();
using var scope = sp.CreateScope();
var mapper = scope.ServiceProvider.GetService<IMapper>();
MapToDto(mapper, expectedValue);
var sp = sc.BuildServiceProvider();
using var scope = sp.CreateScope();
var mapper = scope.ServiceProvider.GetService<IMapper>();
MapToDto(mapper, expectedValue);
});
}

private static TypeAdapterConfig ConfigureMapping(string expectedValue)
Expand DownExpand Up@@ -103,4 +106,4 @@ public class Dto
public string Id { get; set; }
public string Name { get; set; }
}
}
}
12 changes: 8 additions & 4 deletions src/Mapster.DependencyInjection.Tests/Mapster.DependencyInjection.Tests.csproj
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@@ -1,16 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
<TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
<IsTestProject>true</IsTestProject>
<IsPackable>false</IsPackable>
</PropertyGroup>

<PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
<TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
<PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
<PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
<PackageReference Include="Shouldly" Version="4.2.1" />
</ItemGroup>

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2 changes: 1 addition & 1 deletion src/Mapster.DependencyInjection/Mapster.DependencyInjection.csproj
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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
<TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
<Description>Dependency Injection supports for Mapster</Description>
<IsPackable>true</IsPackable>
<PackageTags>Mapster;DependencyInjection</PackageTags>
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6 changes: 3 additions & 3 deletions src/Mapster.EFCore.Tests/Mapster.EFCore.Tests.csproj
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Expand Up@@ -8,9 +8,9 @@

<ItemGroup>
<PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
<PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
<PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
<PackageReference Include="coverlet.collector" Version="6.0.2">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down
12 changes: 8 additions & 4 deletions src/Mapster.Immutable.Tests/Mapster.Immutable.Tests.csproj
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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
<TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
<IsTestProject>true</IsTestProject>
<IsPackable>false</IsPackable>
</PropertyGroup>

<PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
<TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
<PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
<PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
<PackageReference Include="coverlet.collector" Version="6.0.2">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down
2 changes: 1 addition & 1 deletion src/Mapster.Immutable/Mapster.Immutable.csproj
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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
<TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
<Description>Immutable collection supports for Mapster</Description>
<IsPackable>true</IsPackable>
<PackageTags>Mapster;Immutable</PackageTags>
Expand Down
12 changes: 8 additions & 4 deletions src/Mapster.JsonNet.Tests/Mapster.JsonNet.Tests.csproj
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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
<TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
<IsTestProject>true</IsTestProject>
<IsPackable>false</IsPackable>
</PropertyGroup>

<PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
<TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
<PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
<PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
<PackageReference Include="Shouldly" Version="4.2.1" />
</ItemGroup>

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2 changes: 1 addition & 1 deletion src/Mapster.JsonNet/Mapster.JsonNet.csproj
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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
<TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
<Description>Json.net conversion supports for Mapster</Description>
<IsPackable>true</IsPackable>
<PackageTags>Mapster;Json.net</PackageTags>
Expand Down
15 changes: 10 additions & 5 deletions src/Mapster.Tests/Mapster.Tests.csproj
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@@ -1,7 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
<TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
<IsTestProject>true</IsTestProject>
<IsPackable>false</IsPackable>
<AssemblyName>Mapster.Tests</AssemblyName>
Expand All@@ -10,13 +10,18 @@
<PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
<LangVersion>11.0</LangVersion>
</PropertyGroup>

<PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
<TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
<PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
<PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
<PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
<PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
<PackageReference Include="Shouldly" Version="4.2.1" />
<PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
<PackageReference Include="System.Text.Json" Version="10.0.2" Condition="'$(TargetFramework)' == 'net48'" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\ExpressionDebugger\ExpressionDebugger.csproj" />
Expand All@@ -34,4 +39,4 @@
<Compile Remove="Diagnostics\GlobalReference.cs" />
<Compile Remove="Diagnostics\TypeAdapterConfigExtensions.cs" />
</ItemGroup>
</Project>
</Project>
19 changes: 19 additions & 0 deletions src/Mapster.Tests/Polyfills/CompileWithDebugInfo.net48.cs
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@@ -0,0 +1,19 @@
#if NET48
using System;

namespace System.Linq.Expressions
{
internal static class CompileWithDebugInfoPolyfill
{
public static Delegate CompileWithDebugInfo(this LambdaExpression node)
{
return node.Compile();
}

public static T CompileWithDebugInfo<T>(this Expression<T> node)
{
return node.Compile();
}
}
}
#endif
38 changes: 38 additions & 0 deletions src/Mapster.Tests/Polyfills/RequiredMemberAttributes.net48.cs
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@@ -0,0 +1,38 @@
#if NET48
using System;

namespace System.Runtime.CompilerServices
{
[AttributeUsage(AttributeTargets.All, AllowMultiple = false, Inherited = false)]
internal sealed class RequiredMemberAttribute : Attribute
{
public RequiredMemberAttribute()
{
}
}

[AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = false)]
internal sealed class CompilerFeatureRequiredAttribute : Attribute
{
public CompilerFeatureRequiredAttribute(string featureName)
{
FeatureName = featureName;
}

public string FeatureName { get; }

public bool IsOptional { get; set; }
}
}

namespace System.Diagnostics.CodeAnalysis
{
[AttributeUsage(AttributeTargets.Constructor, AllowMultiple = false, Inherited = false)]
internal sealed class SetsRequiredMembersAttribute : Attribute
{
public SetsRequiredMembersAttribute()
{
}
}
}
#endif
14 changes: 14 additions & 0 deletions src/Mapster.Tests/Polyfills/TypeGetConstructorOverload.net48.cs
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@@ -0,0 +1,14 @@
#if NET48
using System;

namespace System.Reflection
{
internal static class TypeGetConstructorOverloadPolyfill
{
public static ConstructorInfo? GetConstructor(this Type type, BindingFlags bindingAttr, Type[] types)
{
return type.GetConstructor(bindingAttr, binder: null, types: types, modifiers: null);
}
}
}
#endif
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function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
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btn.textContent = 'Copied!';
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observer.observe(document.body, { childList: true, subtree: true });
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Restore netstandard2.0 support for Mapster by asp2286 · Pull Request #849 · MapsterMapper/Mapster · GitHub
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Restore netstandard2.0 support for Mapster#849

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to your account

 Merged

DocSvartz
merged 2 commits into

from

Feb 16, 2026
 Merged


Restore netstandard2.0 support for Mapster
#849
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da7258f

feat: netstandard2.0 support and test fixes


asp2286 Feb 1, 2026
ad1d0b7

fix: restore IMapFrom fallback mapping


asp2286 Feb 6, 2026

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4 changes: 4 additions & 0 deletions
src/ExpressionDebugger.Tests/ExpressionDebugger.Tests.csproj

View file


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Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,10 @@
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionCompiler.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -125,10 +125,10 @@ from n in t.TypeNames
 assemblyStream.Seek(0, SeekOrigin.Begin);
 symbolsStream.Seek(0, SeekOrigin.Begin);

#if NETSTANDARD2_0 || NET6_0_OR_GREATER
#if NET6_0_OR_GREATER
 return System.Runtime.Loader.AssemblyLoadContext.Default.LoadFromStream(assemblyStream, symbolsStream);
#else
return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
 return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
#endif
 }

Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionDebugger.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Step into debugging from linq expressions</Description>
Expand All@@ -25,4 +25,4 @@
 <ItemGroup>
 <ProjectReference Include="..\ExpressionTranslator\ExpressionTranslator.csproj" />
 </ItemGroup>
</Project>
</Project>

4 changes: 2 additions & 2 deletions
src/ExpressionTranslator/ExpressionTranslator.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Translate from linq expressions to C# code</Description>
Expand All@@ -25,7 +25,7 @@
 <None Include="icon.png" Pack="true" PackagePath="\" />
 </ItemGroup>

 <ItemGroup>
 <ItemGroup Condition="'$(TargetFramework)' != 'netstandard2.0'">
 <PackageReference Include="System.Runtime.Experimental" Version="6.0.2" />
 </ItemGroup>
</Project>

6 changes: 3 additions & 3 deletions
src/Mapster.Async.Tests/AsyncTest.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -45,15 +45,15 @@ public async Task AsyncError()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void Sync()
 {
 TypeAdapterConfig<Poco, Dto>.NewConfig()
 .AfterMappingAsync(async dest => { dest.Name = await GetName(); });

 var poco = new Poco {Id = "foo"};
 var dto = poco.Adapt<Dto>();
dto.Name.ShouldBe("bar");

Should.Throw<InvalidOperationException>(() => poco.Adapt<Dto>());
 }

 [TestMethod]
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Async.Tests/Mapster.Async.Tests.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.Async/Mapster.Async.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Async supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Async</PackageTags>
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31 changes: 17 additions & 14 deletions
src/Mapster.DependencyInjection.Tests/InjectionTest.cs

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Expand Up@@ -31,23 +31,26 @@ public void Injection()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void NoServiceAdapter_InjectionError()
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);
 Should.Throw<InvalidOperationException>(() =>
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);

 IServiceCollection sc = new ServiceCollection();
 sc.AddScoped<IMockService, MockService>();
 sc.AddSingleton(config);
 // We should use ServiceMapper in normal code
 // but for this test we want to be sure the code will generate the InvalidOperationException
 sc.AddScoped<IMapper, Mapper>();
IServiceCollection sc = new ServiceCollection();
sc.AddScoped<IMockService, MockService>();
sc.AddSingleton(config);
// We should use ServiceMapper in normal code
// but for this test we want to be sure the code will generate the InvalidOperationException
sc.AddScoped<IMapper, Mapper>();

 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 });
 }

 private static TypeAdapterConfig ConfigureMapping(string expectedValue)
Expand DownExpand Up@@ -103,4 +106,4 @@ public class Dto
 public string Id { get; set; }
 public string Name { get; set; }
 }
}
}

12 changes: 8 additions & 4 deletions
src/Mapster.DependencyInjection.Tests/Mapster.DependencyInjection.Tests.csproj

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<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.DependencyInjection/Mapster.DependencyInjection.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Dependency Injection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;DependencyInjection</PackageTags>
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6 changes: 3 additions & 3 deletions
src/Mapster.EFCore.Tests/Mapster.EFCore.Tests.csproj

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Expand Up@@ -8,9 +8,9 @@

 <ItemGroup>
 <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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12 changes: 8 additions & 4 deletions
src/Mapster.Immutable.Tests/Mapster.Immutable.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.Immutable/Mapster.Immutable.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Immutable collection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Immutable</PackageTags>
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12 changes: 8 additions & 4 deletions
src/Mapster.JsonNet.Tests/Mapster.JsonNet.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.JsonNet/Mapster.JsonNet.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Json.net conversion supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Json.net</PackageTags>
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15 changes: 10 additions & 5 deletions
src/Mapster.Tests/Mapster.Tests.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<Project Sdk="Microsoft.NET.Sdk">
 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 <AssemblyName>Mapster.Tests</AssemblyName>
Expand All@@ -10,13 +10,18 @@
 <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
 <LangVersion>11.0</LangVersion>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>
 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
 <PackageReference Include="System.Text.Json" Version="10.0.2" Condition="'$(TargetFramework)' == 'net48'" />
 </ItemGroup>
 <ItemGroup>
 <ProjectReference Include="..\ExpressionDebugger\ExpressionDebugger.csproj" />
Expand All@@ -34,4 +39,4 @@
 <Compile Remove="Diagnostics\GlobalReference.cs" />
 <Compile Remove="Diagnostics\TypeAdapterConfigExtensions.cs" />
 </ItemGroup>
</Project>
</Project>

19 changes: 19 additions & 0 deletions
src/Mapster.Tests/Polyfills/CompileWithDebugInfo.net48.cs

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@@ -0,0 +1,19 @@
#if NET48
using System;

namespace System.Linq.Expressions
{
 internal static class CompileWithDebugInfoPolyfill
 {
 public static Delegate CompileWithDebugInfo(this LambdaExpression node)
 {
 return node.Compile();
 }

 public static T CompileWithDebugInfo<T>(this Expression<T> node)
 {
 return node.Compile();
 }
 }
}
#endif

38 changes: 38 additions & 0 deletions
src/Mapster.Tests/Polyfills/RequiredMemberAttributes.net48.cs

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@@ -0,0 +1,38 @@
#if NET48
using System;

namespace System.Runtime.CompilerServices
{
 [AttributeUsage(AttributeTargets.All, AllowMultiple = false, Inherited = false)]
 internal sealed class RequiredMemberAttribute : Attribute
 {
 public RequiredMemberAttribute()
 {
 }
 }

 [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = false)]
 internal sealed class CompilerFeatureRequiredAttribute : Attribute
 {
 public CompilerFeatureRequiredAttribute(string featureName)
 {
 FeatureName = featureName;
 }

 public string FeatureName { get; }

 public bool IsOptional { get; set; }
 }
}

namespace System.Diagnostics.CodeAnalysis
{
 [AttributeUsage(AttributeTargets.Constructor, AllowMultiple = false, Inherited = false)]
 internal sealed class SetsRequiredMembersAttribute : Attribute
 {
 public SetsRequiredMembersAttribute()
 {
 }
 }
}
#endif

14 changes: 14 additions & 0 deletions
src/Mapster.Tests/Polyfills/TypeGetConstructorOverload.net48.cs

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@@ -0,0 +1,14 @@
#if NET48
using System;

namespace System.Reflection
{
 internal static class TypeGetConstructorOverloadPolyfill
 {
 public static ConstructorInfo? GetConstructor(this Type type, BindingFlags bindingAttr, Type[] types)
 {
 return type.GetConstructor(bindingAttr, binder: null, types: types, modifiers: null);
 }
 }
}
#endif
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// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
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Restore netstandard2.0 support for Mapster by asp2286 · Pull Request #849 · MapsterMapper/Mapster · GitHub
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 Merged

DocSvartz
merged 2 commits into

from

Feb 16, 2026
 Merged


Restore netstandard2.0 support for Mapster
#849
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da7258f

feat: netstandard2.0 support and test fixes


asp2286 Feb 1, 2026
ad1d0b7

fix: restore IMapFrom fallback mapping


asp2286 Feb 6, 2026

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4 changes: 4 additions & 0 deletions
src/ExpressionDebugger.Tests/ExpressionDebugger.Tests.csproj

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Expand Up@@ -6,6 +6,10 @@
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionCompiler.cs

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Expand Up@@ -125,10 +125,10 @@ from n in t.TypeNames
 assemblyStream.Seek(0, SeekOrigin.Begin);
 symbolsStream.Seek(0, SeekOrigin.Begin);

#if NETSTANDARD2_0 || NET6_0_OR_GREATER
#if NET6_0_OR_GREATER
 return System.Runtime.Loader.AssemblyLoadContext.Default.LoadFromStream(assemblyStream, symbolsStream);
#else
return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
 return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
#endif
 }

Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionDebugger.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Step into debugging from linq expressions</Description>
Expand All@@ -25,4 +25,4 @@
 <ItemGroup>
 <ProjectReference Include="..\ExpressionTranslator\ExpressionTranslator.csproj" />
 </ItemGroup>
</Project>
</Project>

4 changes: 2 additions & 2 deletions
src/ExpressionTranslator/ExpressionTranslator.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Translate from linq expressions to C# code</Description>
Expand All@@ -25,7 +25,7 @@
 <None Include="icon.png" Pack="true" PackagePath="\" />
 </ItemGroup>

 <ItemGroup>
 <ItemGroup Condition="'$(TargetFramework)' != 'netstandard2.0'">
 <PackageReference Include="System.Runtime.Experimental" Version="6.0.2" />
 </ItemGroup>
</Project>

6 changes: 3 additions & 3 deletions
src/Mapster.Async.Tests/AsyncTest.cs

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Expand Up@@ -45,15 +45,15 @@ public async Task AsyncError()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void Sync()
 {
 TypeAdapterConfig<Poco, Dto>.NewConfig()
 .AfterMappingAsync(async dest => { dest.Name = await GetName(); });

 var poco = new Poco {Id = "foo"};
 var dto = poco.Adapt<Dto>();
dto.Name.ShouldBe("bar");

Should.Throw<InvalidOperationException>(() => poco.Adapt<Dto>());
 }

 [TestMethod]
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Async.Tests/Mapster.Async.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.Async/Mapster.Async.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Async supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Async</PackageTags>
Expand Down

31 changes: 17 additions & 14 deletions
src/Mapster.DependencyInjection.Tests/InjectionTest.cs

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Expand Up@@ -31,23 +31,26 @@ public void Injection()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void NoServiceAdapter_InjectionError()
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);
 Should.Throw<InvalidOperationException>(() =>
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);

 IServiceCollection sc = new ServiceCollection();
 sc.AddScoped<IMockService, MockService>();
 sc.AddSingleton(config);
 // We should use ServiceMapper in normal code
 // but for this test we want to be sure the code will generate the InvalidOperationException
 sc.AddScoped<IMapper, Mapper>();
IServiceCollection sc = new ServiceCollection();
sc.AddScoped<IMockService, MockService>();
sc.AddSingleton(config);
// We should use ServiceMapper in normal code
// but for this test we want to be sure the code will generate the InvalidOperationException
sc.AddScoped<IMapper, Mapper>();

 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 });
 }

 private static TypeAdapterConfig ConfigureMapping(string expectedValue)
Expand DownExpand Up@@ -103,4 +106,4 @@ public class Dto
 public string Id { get; set; }
 public string Name { get; set; }
 }
}
}

12 changes: 8 additions & 4 deletions
src/Mapster.DependencyInjection.Tests/Mapster.DependencyInjection.Tests.csproj

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@@ -1,16 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.DependencyInjection/Mapster.DependencyInjection.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Dependency Injection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;DependencyInjection</PackageTags>
Expand Down

6 changes: 3 additions & 3 deletions
src/Mapster.EFCore.Tests/Mapster.EFCore.Tests.csproj

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Expand Up@@ -8,9 +8,9 @@

 <ItemGroup>
 <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Immutable.Tests/Mapster.Immutable.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.Immutable/Mapster.Immutable.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Immutable collection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Immutable</PackageTags>
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12 changes: 8 additions & 4 deletions
src/Mapster.JsonNet.Tests/Mapster.JsonNet.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.JsonNet/Mapster.JsonNet.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Json.net conversion supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Json.net</PackageTags>
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15 changes: 10 additions & 5 deletions
src/Mapster.Tests/Mapster.Tests.csproj

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@@ -1,7 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<Project Sdk="Microsoft.NET.Sdk">
 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 <AssemblyName>Mapster.Tests</AssemblyName>
Expand All@@ -10,13 +10,18 @@
 <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
 <LangVersion>11.0</LangVersion>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>
 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
 <PackageReference Include="System.Text.Json" Version="10.0.2" Condition="'$(TargetFramework)' == 'net48'" />
 </ItemGroup>
 <ItemGroup>
 <ProjectReference Include="..\ExpressionDebugger\ExpressionDebugger.csproj" />
Expand All@@ -34,4 +39,4 @@
 <Compile Remove="Diagnostics\GlobalReference.cs" />
 <Compile Remove="Diagnostics\TypeAdapterConfigExtensions.cs" />
 </ItemGroup>
</Project>
</Project>

19 changes: 19 additions & 0 deletions
src/Mapster.Tests/Polyfills/CompileWithDebugInfo.net48.cs

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@@ -0,0 +1,19 @@
#if NET48
using System;

namespace System.Linq.Expressions
{
 internal static class CompileWithDebugInfoPolyfill
 {
 public static Delegate CompileWithDebugInfo(this LambdaExpression node)
 {
 return node.Compile();
 }

 public static T CompileWithDebugInfo<T>(this Expression<T> node)
 {
 return node.Compile();
 }
 }
}
#endif

38 changes: 38 additions & 0 deletions
src/Mapster.Tests/Polyfills/RequiredMemberAttributes.net48.cs

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@@ -0,0 +1,38 @@
#if NET48
using System;

namespace System.Runtime.CompilerServices
{
 [AttributeUsage(AttributeTargets.All, AllowMultiple = false, Inherited = false)]
 internal sealed class RequiredMemberAttribute : Attribute
 {
 public RequiredMemberAttribute()
 {
 }
 }

 [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = false)]
 internal sealed class CompilerFeatureRequiredAttribute : Attribute
 {
 public CompilerFeatureRequiredAttribute(string featureName)
 {
 FeatureName = featureName;
 }

 public string FeatureName { get; }

 public bool IsOptional { get; set; }
 }
}

namespace System.Diagnostics.CodeAnalysis
{
 [AttributeUsage(AttributeTargets.Constructor, AllowMultiple = false, Inherited = false)]
 internal sealed class SetsRequiredMembersAttribute : Attribute
 {
 public SetsRequiredMembersAttribute()
 {
 }
 }
}
#endif

14 changes: 14 additions & 0 deletions
src/Mapster.Tests/Polyfills/TypeGetConstructorOverload.net48.cs

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@@ -0,0 +1,14 @@
#if NET48
using System;

namespace System.Reflection
{
 internal static class TypeGetConstructorOverloadPolyfill
 {
 public static ConstructorInfo? GetConstructor(this Type type, BindingFlags bindingAttr, Type[] types)
 {
 return type.GetConstructor(bindingAttr, binder: null, types: types, modifiers: null);
 }
 }
}
#endif
Loading
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Restore netstandard2.0 support for Mapster by asp2286 · Pull Request #849 · MapsterMapper/Mapster · GitHub
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 Merged

DocSvartz
merged 2 commits into

from

Feb 16, 2026
 Merged


Restore netstandard2.0 support for Mapster
#849
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da7258f

feat: netstandard2.0 support and test fixes


asp2286 Feb 1, 2026
ad1d0b7

fix: restore IMapFrom fallback mapping


asp2286 Feb 6, 2026

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4 changes: 4 additions & 0 deletions
src/ExpressionDebugger.Tests/ExpressionDebugger.Tests.csproj

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Expand Up@@ -6,6 +6,10 @@
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionCompiler.cs

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Expand Up@@ -125,10 +125,10 @@ from n in t.TypeNames
 assemblyStream.Seek(0, SeekOrigin.Begin);
 symbolsStream.Seek(0, SeekOrigin.Begin);

#if NETSTANDARD2_0 || NET6_0_OR_GREATER
#if NET6_0_OR_GREATER
 return System.Runtime.Loader.AssemblyLoadContext.Default.LoadFromStream(assemblyStream, symbolsStream);
#else
return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
 return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
#endif
 }

Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionDebugger.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Step into debugging from linq expressions</Description>
Expand All@@ -25,4 +25,4 @@
 <ItemGroup>
 <ProjectReference Include="..\ExpressionTranslator\ExpressionTranslator.csproj" />
 </ItemGroup>
</Project>
</Project>

4 changes: 2 additions & 2 deletions
src/ExpressionTranslator/ExpressionTranslator.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Translate from linq expressions to C# code</Description>
Expand All@@ -25,7 +25,7 @@
 <None Include="icon.png" Pack="true" PackagePath="\" />
 </ItemGroup>

 <ItemGroup>
 <ItemGroup Condition="'$(TargetFramework)' != 'netstandard2.0'">
 <PackageReference Include="System.Runtime.Experimental" Version="6.0.2" />
 </ItemGroup>
</Project>

6 changes: 3 additions & 3 deletions
src/Mapster.Async.Tests/AsyncTest.cs

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Expand Up@@ -45,15 +45,15 @@ public async Task AsyncError()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void Sync()
 {
 TypeAdapterConfig<Poco, Dto>.NewConfig()
 .AfterMappingAsync(async dest => { dest.Name = await GetName(); });

 var poco = new Poco {Id = "foo"};
 var dto = poco.Adapt<Dto>();
dto.Name.ShouldBe("bar");

Should.Throw<InvalidOperationException>(() => poco.Adapt<Dto>());
 }

 [TestMethod]
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Async.Tests/Mapster.Async.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.Async/Mapster.Async.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Async supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Async</PackageTags>
Expand Down

31 changes: 17 additions & 14 deletions
src/Mapster.DependencyInjection.Tests/InjectionTest.cs

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Expand Up@@ -31,23 +31,26 @@ public void Injection()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void NoServiceAdapter_InjectionError()
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);
 Should.Throw<InvalidOperationException>(() =>
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);

 IServiceCollection sc = new ServiceCollection();
 sc.AddScoped<IMockService, MockService>();
 sc.AddSingleton(config);
 // We should use ServiceMapper in normal code
 // but for this test we want to be sure the code will generate the InvalidOperationException
 sc.AddScoped<IMapper, Mapper>();
IServiceCollection sc = new ServiceCollection();
sc.AddScoped<IMockService, MockService>();
sc.AddSingleton(config);
// We should use ServiceMapper in normal code
// but for this test we want to be sure the code will generate the InvalidOperationException
sc.AddScoped<IMapper, Mapper>();

 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 });
 }

 private static TypeAdapterConfig ConfigureMapping(string expectedValue)
Expand DownExpand Up@@ -103,4 +106,4 @@ public class Dto
 public string Id { get; set; }
 public string Name { get; set; }
 }
}
}

12 changes: 8 additions & 4 deletions
src/Mapster.DependencyInjection.Tests/Mapster.DependencyInjection.Tests.csproj

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@@ -1,16 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.DependencyInjection/Mapster.DependencyInjection.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Dependency Injection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;DependencyInjection</PackageTags>
Expand Down

6 changes: 3 additions & 3 deletions
src/Mapster.EFCore.Tests/Mapster.EFCore.Tests.csproj

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Expand Up@@ -8,9 +8,9 @@

 <ItemGroup>
 <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Immutable.Tests/Mapster.Immutable.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.Immutable/Mapster.Immutable.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Immutable collection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Immutable</PackageTags>
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.JsonNet.Tests/Mapster.JsonNet.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.JsonNet/Mapster.JsonNet.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Json.net conversion supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Json.net</PackageTags>
Expand Down

15 changes: 10 additions & 5 deletions
src/Mapster.Tests/Mapster.Tests.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<Project Sdk="Microsoft.NET.Sdk">
 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 <AssemblyName>Mapster.Tests</AssemblyName>
Expand All@@ -10,13 +10,18 @@
 <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
 <LangVersion>11.0</LangVersion>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>
 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
 <PackageReference Include="System.Text.Json" Version="10.0.2" Condition="'$(TargetFramework)' == 'net48'" />
 </ItemGroup>
 <ItemGroup>
 <ProjectReference Include="..\ExpressionDebugger\ExpressionDebugger.csproj" />
Expand All@@ -34,4 +39,4 @@
 <Compile Remove="Diagnostics\GlobalReference.cs" />
 <Compile Remove="Diagnostics\TypeAdapterConfigExtensions.cs" />
 </ItemGroup>
</Project>
</Project>

19 changes: 19 additions & 0 deletions
src/Mapster.Tests/Polyfills/CompileWithDebugInfo.net48.cs

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@@ -0,0 +1,19 @@
#if NET48
using System;

namespace System.Linq.Expressions
{
 internal static class CompileWithDebugInfoPolyfill
 {
 public static Delegate CompileWithDebugInfo(this LambdaExpression node)
 {
 return node.Compile();
 }

 public static T CompileWithDebugInfo<T>(this Expression<T> node)
 {
 return node.Compile();
 }
 }
}
#endif

38 changes: 38 additions & 0 deletions
src/Mapster.Tests/Polyfills/RequiredMemberAttributes.net48.cs

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@@ -0,0 +1,38 @@
#if NET48
using System;

namespace System.Runtime.CompilerServices
{
 [AttributeUsage(AttributeTargets.All, AllowMultiple = false, Inherited = false)]
 internal sealed class RequiredMemberAttribute : Attribute
 {
 public RequiredMemberAttribute()
 {
 }
 }

 [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = false)]
 internal sealed class CompilerFeatureRequiredAttribute : Attribute
 {
 public CompilerFeatureRequiredAttribute(string featureName)
 {
 FeatureName = featureName;
 }

 public string FeatureName { get; }

 public bool IsOptional { get; set; }
 }
}

namespace System.Diagnostics.CodeAnalysis
{
 [AttributeUsage(AttributeTargets.Constructor, AllowMultiple = false, Inherited = false)]
 internal sealed class SetsRequiredMembersAttribute : Attribute
 {
 public SetsRequiredMembersAttribute()
 {
 }
 }
}
#endif

14 changes: 14 additions & 0 deletions
src/Mapster.Tests/Polyfills/TypeGetConstructorOverload.net48.cs

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@@ -0,0 +1,14 @@
#if NET48
using System;

namespace System.Reflection
{
 internal static class TypeGetConstructorOverloadPolyfill
 {
 public static ConstructorInfo? GetConstructor(this Type type, BindingFlags bindingAttr, Type[] types)
 {
 return type.GetConstructor(bindingAttr, binder: null, types: types, modifiers: null);
 }
 }
}
#endif
Loading
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Restore netstandard2.0 support for Mapster by asp2286 · Pull Request #849 · MapsterMapper/Mapster · GitHub
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Restore netstandard2.0 support for Mapster#849

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 Merged

DocSvartz
merged 2 commits into

from

Feb 16, 2026
 Merged


Restore netstandard2.0 support for Mapster
#849
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da7258f

feat: netstandard2.0 support and test fixes


asp2286 Feb 1, 2026
ad1d0b7

fix: restore IMapFrom fallback mapping


asp2286 Feb 6, 2026

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4 changes: 4 additions & 0 deletions
src/ExpressionDebugger.Tests/ExpressionDebugger.Tests.csproj

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Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,10 @@
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionCompiler.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -125,10 +125,10 @@ from n in t.TypeNames
 assemblyStream.Seek(0, SeekOrigin.Begin);
 symbolsStream.Seek(0, SeekOrigin.Begin);

#if NETSTANDARD2_0 || NET6_0_OR_GREATER
#if NET6_0_OR_GREATER
 return System.Runtime.Loader.AssemblyLoadContext.Default.LoadFromStream(assemblyStream, symbolsStream);
#else
return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
 return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
#endif
 }

Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionDebugger.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Step into debugging from linq expressions</Description>
Expand All@@ -25,4 +25,4 @@
 <ItemGroup>
 <ProjectReference Include="..\ExpressionTranslator\ExpressionTranslator.csproj" />
 </ItemGroup>
</Project>
</Project>

4 changes: 2 additions & 2 deletions
src/ExpressionTranslator/ExpressionTranslator.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Translate from linq expressions to C# code</Description>
Expand All@@ -25,7 +25,7 @@
 <None Include="icon.png" Pack="true" PackagePath="\" />
 </ItemGroup>

 <ItemGroup>
 <ItemGroup Condition="'$(TargetFramework)' != 'netstandard2.0'">
 <PackageReference Include="System.Runtime.Experimental" Version="6.0.2" />
 </ItemGroup>
</Project>

6 changes: 3 additions & 3 deletions
src/Mapster.Async.Tests/AsyncTest.cs

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Expand Up@@ -45,15 +45,15 @@ public async Task AsyncError()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void Sync()
 {
 TypeAdapterConfig<Poco, Dto>.NewConfig()
 .AfterMappingAsync(async dest => { dest.Name = await GetName(); });

 var poco = new Poco {Id = "foo"};
 var dto = poco.Adapt<Dto>();
dto.Name.ShouldBe("bar");

Should.Throw<InvalidOperationException>(() => poco.Adapt<Dto>());
 }

 [TestMethod]
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Async.Tests/Mapster.Async.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.Async/Mapster.Async.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Async supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Async</PackageTags>
Expand Down

31 changes: 17 additions & 14 deletions
src/Mapster.DependencyInjection.Tests/InjectionTest.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -31,23 +31,26 @@ public void Injection()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void NoServiceAdapter_InjectionError()
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);
 Should.Throw<InvalidOperationException>(() =>
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);

 IServiceCollection sc = new ServiceCollection();
 sc.AddScoped<IMockService, MockService>();
 sc.AddSingleton(config);
 // We should use ServiceMapper in normal code
 // but for this test we want to be sure the code will generate the InvalidOperationException
 sc.AddScoped<IMapper, Mapper>();
IServiceCollection sc = new ServiceCollection();
sc.AddScoped<IMockService, MockService>();
sc.AddSingleton(config);
// We should use ServiceMapper in normal code
// but for this test we want to be sure the code will generate the InvalidOperationException
sc.AddScoped<IMapper, Mapper>();

 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 });
 }

 private static TypeAdapterConfig ConfigureMapping(string expectedValue)
Expand DownExpand Up@@ -103,4 +106,4 @@ public class Dto
 public string Id { get; set; }
 public string Name { get; set; }
 }
}
}

12 changes: 8 additions & 4 deletions
src/Mapster.DependencyInjection.Tests/Mapster.DependencyInjection.Tests.csproj

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@@ -1,16 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.DependencyInjection/Mapster.DependencyInjection.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Dependency Injection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;DependencyInjection</PackageTags>
Expand Down

6 changes: 3 additions & 3 deletions
src/Mapster.EFCore.Tests/Mapster.EFCore.Tests.csproj

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Expand Up@@ -8,9 +8,9 @@

 <ItemGroup>
 <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Immutable.Tests/Mapster.Immutable.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.Immutable/Mapster.Immutable.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Immutable collection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Immutable</PackageTags>
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.JsonNet.Tests/Mapster.JsonNet.Tests.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.JsonNet/Mapster.JsonNet.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Json.net conversion supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Json.net</PackageTags>
Expand Down

15 changes: 10 additions & 5 deletions
src/Mapster.Tests/Mapster.Tests.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<Project Sdk="Microsoft.NET.Sdk">
 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 <AssemblyName>Mapster.Tests</AssemblyName>
Expand All@@ -10,13 +10,18 @@
 <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
 <LangVersion>11.0</LangVersion>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>
 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
 <PackageReference Include="System.Text.Json" Version="10.0.2" Condition="'$(TargetFramework)' == 'net48'" />
 </ItemGroup>
 <ItemGroup>
 <ProjectReference Include="..\ExpressionDebugger\ExpressionDebugger.csproj" />
Expand All@@ -34,4 +39,4 @@
 <Compile Remove="Diagnostics\GlobalReference.cs" />
 <Compile Remove="Diagnostics\TypeAdapterConfigExtensions.cs" />
 </ItemGroup>
</Project>
</Project>

19 changes: 19 additions & 0 deletions
src/Mapster.Tests/Polyfills/CompileWithDebugInfo.net48.cs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
#if NET48
using System;

namespace System.Linq.Expressions
{
 internal static class CompileWithDebugInfoPolyfill
 {
 public static Delegate CompileWithDebugInfo(this LambdaExpression node)
 {
 return node.Compile();
 }

 public static T CompileWithDebugInfo<T>(this Expression<T> node)
 {
 return node.Compile();
 }
 }
}
#endif

38 changes: 38 additions & 0 deletions
src/Mapster.Tests/Polyfills/RequiredMemberAttributes.net48.cs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,38 @@
#if NET48
using System;

namespace System.Runtime.CompilerServices
{
 [AttributeUsage(AttributeTargets.All, AllowMultiple = false, Inherited = false)]
 internal sealed class RequiredMemberAttribute : Attribute
 {
 public RequiredMemberAttribute()
 {
 }
 }

 [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = false)]
 internal sealed class CompilerFeatureRequiredAttribute : Attribute
 {
 public CompilerFeatureRequiredAttribute(string featureName)
 {
 FeatureName = featureName;
 }

 public string FeatureName { get; }

 public bool IsOptional { get; set; }
 }
}

namespace System.Diagnostics.CodeAnalysis
{
 [AttributeUsage(AttributeTargets.Constructor, AllowMultiple = false, Inherited = false)]
 internal sealed class SetsRequiredMembersAttribute : Attribute
 {
 public SetsRequiredMembersAttribute()
 {
 }
 }
}
#endif

14 changes: 14 additions & 0 deletions
src/Mapster.Tests/Polyfills/TypeGetConstructorOverload.net48.cs

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,14 @@
#if NET48
using System;

namespace System.Reflection
{
 internal static class TypeGetConstructorOverloadPolyfill
 {
 public static ConstructorInfo? GetConstructor(this Type type, BindingFlags bindingAttr, Type[] types)
 {
 return type.GetConstructor(bindingAttr, binder: null, types: types, modifiers: null);
 }
 }
}
#endif
Loading
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Restore netstandard2.0 support for Mapster by asp2286 · Pull Request #849 · MapsterMapper/Mapster · GitHub
Skip to content
Restore netstandard2.0 support for Mapster#849

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

DocSvartz
merged 2 commits into

from

Feb 16, 2026
 Merged


Restore netstandard2.0 support for Mapster
#849
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da7258f

feat: netstandard2.0 support and test fixes


asp2286 Feb 1, 2026
ad1d0b7

fix: restore IMapFrom fallback mapping


asp2286 Feb 6, 2026

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4 changes: 4 additions & 0 deletions
src/ExpressionDebugger.Tests/ExpressionDebugger.Tests.csproj

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,10 @@
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionCompiler.cs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -125,10 +125,10 @@ from n in t.TypeNames
 assemblyStream.Seek(0, SeekOrigin.Begin);
 symbolsStream.Seek(0, SeekOrigin.Begin);

#if NETSTANDARD2_0 || NET6_0_OR_GREATER
#if NET6_0_OR_GREATER
 return System.Runtime.Loader.AssemblyLoadContext.Default.LoadFromStream(assemblyStream, symbolsStream);
#else
return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
 return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
#endif
 }

Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionDebugger.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Step into debugging from linq expressions</Description>
Expand All@@ -25,4 +25,4 @@
 <ItemGroup>
 <ProjectReference Include="..\ExpressionTranslator\ExpressionTranslator.csproj" />
 </ItemGroup>
</Project>
</Project>

4 changes: 2 additions & 2 deletions
src/ExpressionTranslator/ExpressionTranslator.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Translate from linq expressions to C# code</Description>
Expand All@@ -25,7 +25,7 @@
 <None Include="icon.png" Pack="true" PackagePath="\" />
 </ItemGroup>

 <ItemGroup>
 <ItemGroup Condition="'$(TargetFramework)' != 'netstandard2.0'">
 <PackageReference Include="System.Runtime.Experimental" Version="6.0.2" />
 </ItemGroup>
</Project>

6 changes: 3 additions & 3 deletions
src/Mapster.Async.Tests/AsyncTest.cs

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Expand Up@@ -45,15 +45,15 @@ public async Task AsyncError()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void Sync()
 {
 TypeAdapterConfig<Poco, Dto>.NewConfig()
 .AfterMappingAsync(async dest => { dest.Name = await GetName(); });

 var poco = new Poco {Id = "foo"};
 var dto = poco.Adapt<Dto>();
dto.Name.ShouldBe("bar");

Should.Throw<InvalidOperationException>(() => poco.Adapt<Dto>());
 }

 [TestMethod]
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Async.Tests/Mapster.Async.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.Async/Mapster.Async.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Async supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Async</PackageTags>
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31 changes: 17 additions & 14 deletions
src/Mapster.DependencyInjection.Tests/InjectionTest.cs

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Expand Up@@ -31,23 +31,26 @@ public void Injection()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void NoServiceAdapter_InjectionError()
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);
 Should.Throw<InvalidOperationException>(() =>
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);

 IServiceCollection sc = new ServiceCollection();
 sc.AddScoped<IMockService, MockService>();
 sc.AddSingleton(config);
 // We should use ServiceMapper in normal code
 // but for this test we want to be sure the code will generate the InvalidOperationException
 sc.AddScoped<IMapper, Mapper>();
IServiceCollection sc = new ServiceCollection();
sc.AddScoped<IMockService, MockService>();
sc.AddSingleton(config);
// We should use ServiceMapper in normal code
// but for this test we want to be sure the code will generate the InvalidOperationException
sc.AddScoped<IMapper, Mapper>();

 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 });
 }

 private static TypeAdapterConfig ConfigureMapping(string expectedValue)
Expand DownExpand Up@@ -103,4 +106,4 @@ public class Dto
 public string Id { get; set; }
 public string Name { get; set; }
 }
}
}

12 changes: 8 additions & 4 deletions
src/Mapster.DependencyInjection.Tests/Mapster.DependencyInjection.Tests.csproj

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@@ -1,16 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.DependencyInjection/Mapster.DependencyInjection.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Dependency Injection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;DependencyInjection</PackageTags>
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6 changes: 3 additions & 3 deletions
src/Mapster.EFCore.Tests/Mapster.EFCore.Tests.csproj

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Expand Up@@ -8,9 +8,9 @@

 <ItemGroup>
 <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Immutable.Tests/Mapster.Immutable.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.Immutable/Mapster.Immutable.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Immutable collection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Immutable</PackageTags>
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.JsonNet.Tests/Mapster.JsonNet.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.JsonNet/Mapster.JsonNet.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Json.net conversion supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Json.net</PackageTags>
Expand Down

15 changes: 10 additions & 5 deletions
src/Mapster.Tests/Mapster.Tests.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<Project Sdk="Microsoft.NET.Sdk">
 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 <AssemblyName>Mapster.Tests</AssemblyName>
Expand All@@ -10,13 +10,18 @@
 <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
 <LangVersion>11.0</LangVersion>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>
 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
 <PackageReference Include="System.Text.Json" Version="10.0.2" Condition="'$(TargetFramework)' == 'net48'" />
 </ItemGroup>
 <ItemGroup>
 <ProjectReference Include="..\ExpressionDebugger\ExpressionDebugger.csproj" />
Expand All@@ -34,4 +39,4 @@
 <Compile Remove="Diagnostics\GlobalReference.cs" />
 <Compile Remove="Diagnostics\TypeAdapterConfigExtensions.cs" />
 </ItemGroup>
</Project>
</Project>

19 changes: 19 additions & 0 deletions
src/Mapster.Tests/Polyfills/CompileWithDebugInfo.net48.cs

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@@ -0,0 +1,19 @@
#if NET48
using System;

namespace System.Linq.Expressions
{
 internal static class CompileWithDebugInfoPolyfill
 {
 public static Delegate CompileWithDebugInfo(this LambdaExpression node)
 {
 return node.Compile();
 }

 public static T CompileWithDebugInfo<T>(this Expression<T> node)
 {
 return node.Compile();
 }
 }
}
#endif

38 changes: 38 additions & 0 deletions
src/Mapster.Tests/Polyfills/RequiredMemberAttributes.net48.cs

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@@ -0,0 +1,38 @@
#if NET48
using System;

namespace System.Runtime.CompilerServices
{
 [AttributeUsage(AttributeTargets.All, AllowMultiple = false, Inherited = false)]
 internal sealed class RequiredMemberAttribute : Attribute
 {
 public RequiredMemberAttribute()
 {
 }
 }

 [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = false)]
 internal sealed class CompilerFeatureRequiredAttribute : Attribute
 {
 public CompilerFeatureRequiredAttribute(string featureName)
 {
 FeatureName = featureName;
 }

 public string FeatureName { get; }

 public bool IsOptional { get; set; }
 }
}

namespace System.Diagnostics.CodeAnalysis
{
 [AttributeUsage(AttributeTargets.Constructor, AllowMultiple = false, Inherited = false)]
 internal sealed class SetsRequiredMembersAttribute : Attribute
 {
 public SetsRequiredMembersAttribute()
 {
 }
 }
}
#endif

14 changes: 14 additions & 0 deletions
src/Mapster.Tests/Polyfills/TypeGetConstructorOverload.net48.cs

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@@ -0,0 +1,14 @@
#if NET48
using System;

namespace System.Reflection
{
 internal static class TypeGetConstructorOverloadPolyfill
 {
 public static ConstructorInfo? GetConstructor(this Type type, BindingFlags bindingAttr, Type[] types)
 {
 return type.GetConstructor(bindingAttr, binder: null, types: types, modifiers: null);
 }
 }
}
#endif
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Restore netstandard2.0 support for Mapster by asp2286 · Pull Request #849 · MapsterMapper/Mapster · GitHub
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 Merged

DocSvartz
merged 2 commits into

from

Feb 16, 2026
 Merged


Restore netstandard2.0 support for Mapster
#849
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da7258f

feat: netstandard2.0 support and test fixes


asp2286 Feb 1, 2026
ad1d0b7

fix: restore IMapFrom fallback mapping


asp2286 Feb 6, 2026

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4 changes: 4 additions & 0 deletions
src/ExpressionDebugger.Tests/ExpressionDebugger.Tests.csproj

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Expand Up@@ -6,6 +6,10 @@
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionCompiler.cs

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Expand Up@@ -125,10 +125,10 @@ from n in t.TypeNames
 assemblyStream.Seek(0, SeekOrigin.Begin);
 symbolsStream.Seek(0, SeekOrigin.Begin);

#if NETSTANDARD2_0 || NET6_0_OR_GREATER
#if NET6_0_OR_GREATER
 return System.Runtime.Loader.AssemblyLoadContext.Default.LoadFromStream(assemblyStream, symbolsStream);
#else
return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
 return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
#endif
 }

Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionDebugger.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Step into debugging from linq expressions</Description>
Expand All@@ -25,4 +25,4 @@
 <ItemGroup>
 <ProjectReference Include="..\ExpressionTranslator\ExpressionTranslator.csproj" />
 </ItemGroup>
</Project>
</Project>

4 changes: 2 additions & 2 deletions
src/ExpressionTranslator/ExpressionTranslator.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Translate from linq expressions to C# code</Description>
Expand All@@ -25,7 +25,7 @@
 <None Include="icon.png" Pack="true" PackagePath="\" />
 </ItemGroup>

 <ItemGroup>
 <ItemGroup Condition="'$(TargetFramework)' != 'netstandard2.0'">
 <PackageReference Include="System.Runtime.Experimental" Version="6.0.2" />
 </ItemGroup>
</Project>

6 changes: 3 additions & 3 deletions
src/Mapster.Async.Tests/AsyncTest.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -45,15 +45,15 @@ public async Task AsyncError()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void Sync()
 {
 TypeAdapterConfig<Poco, Dto>.NewConfig()
 .AfterMappingAsync(async dest => { dest.Name = await GetName(); });

 var poco = new Poco {Id = "foo"};
 var dto = poco.Adapt<Dto>();
dto.Name.ShouldBe("bar");

Should.Throw<InvalidOperationException>(() => poco.Adapt<Dto>());
 }

 [TestMethod]
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Async.Tests/Mapster.Async.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.Async/Mapster.Async.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Async supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Async</PackageTags>
Expand Down

31 changes: 17 additions & 14 deletions
src/Mapster.DependencyInjection.Tests/InjectionTest.cs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -31,23 +31,26 @@ public void Injection()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void NoServiceAdapter_InjectionError()
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);
 Should.Throw<InvalidOperationException>(() =>
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);

 IServiceCollection sc = new ServiceCollection();
 sc.AddScoped<IMockService, MockService>();
 sc.AddSingleton(config);
 // We should use ServiceMapper in normal code
 // but for this test we want to be sure the code will generate the InvalidOperationException
 sc.AddScoped<IMapper, Mapper>();
IServiceCollection sc = new ServiceCollection();
sc.AddScoped<IMockService, MockService>();
sc.AddSingleton(config);
// We should use ServiceMapper in normal code
// but for this test we want to be sure the code will generate the InvalidOperationException
sc.AddScoped<IMapper, Mapper>();

 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 });
 }

 private static TypeAdapterConfig ConfigureMapping(string expectedValue)
Expand DownExpand Up@@ -103,4 +106,4 @@ public class Dto
 public string Id { get; set; }
 public string Name { get; set; }
 }
}
}

12 changes: 8 additions & 4 deletions
src/Mapster.DependencyInjection.Tests/Mapster.DependencyInjection.Tests.csproj

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@@ -1,16 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.DependencyInjection/Mapster.DependencyInjection.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Dependency Injection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;DependencyInjection</PackageTags>
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6 changes: 3 additions & 3 deletions
src/Mapster.EFCore.Tests/Mapster.EFCore.Tests.csproj

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Expand Up@@ -8,9 +8,9 @@

 <ItemGroup>
 <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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12 changes: 8 additions & 4 deletions
src/Mapster.Immutable.Tests/Mapster.Immutable.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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2 changes: 1 addition & 1 deletion
src/Mapster.Immutable/Mapster.Immutable.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Immutable collection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Immutable</PackageTags>
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12 changes: 8 additions & 4 deletions
src/Mapster.JsonNet.Tests/Mapster.JsonNet.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.JsonNet/Mapster.JsonNet.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Json.net conversion supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Json.net</PackageTags>
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15 changes: 10 additions & 5 deletions
src/Mapster.Tests/Mapster.Tests.csproj

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@@ -1,7 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<Project Sdk="Microsoft.NET.Sdk">
 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 <AssemblyName>Mapster.Tests</AssemblyName>
Expand All@@ -10,13 +10,18 @@
 <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
 <LangVersion>11.0</LangVersion>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>
 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
 <PackageReference Include="System.Text.Json" Version="10.0.2" Condition="'$(TargetFramework)' == 'net48'" />
 </ItemGroup>
 <ItemGroup>
 <ProjectReference Include="..\ExpressionDebugger\ExpressionDebugger.csproj" />
Expand All@@ -34,4 +39,4 @@
 <Compile Remove="Diagnostics\GlobalReference.cs" />
 <Compile Remove="Diagnostics\TypeAdapterConfigExtensions.cs" />
 </ItemGroup>
</Project>
</Project>

19 changes: 19 additions & 0 deletions
src/Mapster.Tests/Polyfills/CompileWithDebugInfo.net48.cs

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@@ -0,0 +1,19 @@
#if NET48
using System;

namespace System.Linq.Expressions
{
 internal static class CompileWithDebugInfoPolyfill
 {
 public static Delegate CompileWithDebugInfo(this LambdaExpression node)
 {
 return node.Compile();
 }

 public static T CompileWithDebugInfo<T>(this Expression<T> node)
 {
 return node.Compile();
 }
 }
}
#endif

38 changes: 38 additions & 0 deletions
src/Mapster.Tests/Polyfills/RequiredMemberAttributes.net48.cs

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@@ -0,0 +1,38 @@
#if NET48
using System;

namespace System.Runtime.CompilerServices
{
 [AttributeUsage(AttributeTargets.All, AllowMultiple = false, Inherited = false)]
 internal sealed class RequiredMemberAttribute : Attribute
 {
 public RequiredMemberAttribute()
 {
 }
 }

 [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = false)]
 internal sealed class CompilerFeatureRequiredAttribute : Attribute
 {
 public CompilerFeatureRequiredAttribute(string featureName)
 {
 FeatureName = featureName;
 }

 public string FeatureName { get; }

 public bool IsOptional { get; set; }
 }
}

namespace System.Diagnostics.CodeAnalysis
{
 [AttributeUsage(AttributeTargets.Constructor, AllowMultiple = false, Inherited = false)]
 internal sealed class SetsRequiredMembersAttribute : Attribute
 {
 public SetsRequiredMembersAttribute()
 {
 }
 }
}
#endif

14 changes: 14 additions & 0 deletions
src/Mapster.Tests/Polyfills/TypeGetConstructorOverload.net48.cs

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@@ -0,0 +1,14 @@
#if NET48
using System;

namespace System.Reflection
{
 internal static class TypeGetConstructorOverloadPolyfill
 {
 public static ConstructorInfo? GetConstructor(this Type type, BindingFlags bindingAttr, Type[] types)
 {
 return type.GetConstructor(bindingAttr, binder: null, types: types, modifiers: null);
 }
 }
}
#endif
Loading
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
Restore netstandard2.0 support for Mapster by asp2286 · Pull Request #849 · MapsterMapper/Mapster · GitHub
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 Merged

DocSvartz
merged 2 commits into

from

Feb 16, 2026
 Merged


Restore netstandard2.0 support for Mapster
#849
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da7258f

feat: netstandard2.0 support and test fixes


asp2286 Feb 1, 2026
ad1d0b7

fix: restore IMapFrom fallback mapping


asp2286 Feb 6, 2026

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4 changes: 4 additions & 0 deletions
src/ExpressionDebugger.Tests/ExpressionDebugger.Tests.csproj

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Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,10 @@
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionCompiler.cs

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Expand Up@@ -125,10 +125,10 @@ from n in t.TypeNames
 assemblyStream.Seek(0, SeekOrigin.Begin);
 symbolsStream.Seek(0, SeekOrigin.Begin);

#if NETSTANDARD2_0 || NET6_0_OR_GREATER
#if NET6_0_OR_GREATER
 return System.Runtime.Loader.AssemblyLoadContext.Default.LoadFromStream(assemblyStream, symbolsStream);
#else
return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
 return Assembly.Load(assemblyStream.ToArray(), symbolsStream.ToArray());
#endif
 }

Expand Down

4 changes: 2 additions & 2 deletions
src/ExpressionDebugger/ExpressionDebugger.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Step into debugging from linq expressions</Description>
Expand All@@ -25,4 +25,4 @@
 <ItemGroup>
 <ProjectReference Include="..\ExpressionTranslator\ExpressionTranslator.csproj" />
 </ItemGroup>
</Project>
</Project>

4 changes: 2 additions & 2 deletions
src/ExpressionTranslator/ExpressionTranslator.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 <Authors>Chaowlert Chaisrichalermpol</Authors>
 <Description>Translate from linq expressions to C# code</Description>
Expand All@@ -25,7 +25,7 @@
 <None Include="icon.png" Pack="true" PackagePath="\" />
 </ItemGroup>

 <ItemGroup>
 <ItemGroup Condition="'$(TargetFramework)' != 'netstandard2.0'">
 <PackageReference Include="System.Runtime.Experimental" Version="6.0.2" />
 </ItemGroup>
</Project>

6 changes: 3 additions & 3 deletions
src/Mapster.Async.Tests/AsyncTest.cs

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Expand Up@@ -45,15 +45,15 @@ public async Task AsyncError()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void Sync()
 {
 TypeAdapterConfig<Poco, Dto>.NewConfig()
 .AfterMappingAsync(async dest => { dest.Name = await GetName(); });

 var poco = new Poco {Id = "foo"};
 var dto = poco.Adapt<Dto>();
dto.Name.ShouldBe("bar");

Should.Throw<InvalidOperationException>(() => poco.Adapt<Dto>());
 }

 [TestMethod]
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Async.Tests/Mapster.Async.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.Async/Mapster.Async.csproj

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Async supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Async</PackageTags>
Expand Down

31 changes: 17 additions & 14 deletions
src/Mapster.DependencyInjection.Tests/InjectionTest.cs

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Expand Up@@ -31,23 +31,26 @@ public void Injection()
 }
 }

 [TestMethod, ExpectedException(typeof(InvalidOperationException))]
 [TestMethod]
 public void NoServiceAdapter_InjectionError()
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);
 Should.Throw<InvalidOperationException>(() =>
 {
 var expectedValue = MapContext.Current.GetService<IMockService>().GetName();
 var config = ConfigureMapping(expectedValue);

 IServiceCollection sc = new ServiceCollection();
 sc.AddScoped<IMockService, MockService>();
 sc.AddSingleton(config);
 // We should use ServiceMapper in normal code
 // but for this test we want to be sure the code will generate the InvalidOperationException
 sc.AddScoped<IMapper, Mapper>();
IServiceCollection sc = new ServiceCollection();
sc.AddScoped<IMockService, MockService>();
sc.AddSingleton(config);
// We should use ServiceMapper in normal code
// but for this test we want to be sure the code will generate the InvalidOperationException
sc.AddScoped<IMapper, Mapper>();

 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 var sp = sc.BuildServiceProvider();
 using var scope = sp.CreateScope();
 var mapper = scope.ServiceProvider.GetService<IMapper>();
 MapToDto(mapper, expectedValue);
 });
 }

 private static TypeAdapterConfig ConfigureMapping(string expectedValue)
Expand DownExpand Up@@ -103,4 +106,4 @@ public class Dto
 public string Id { get; set; }
 public string Name { get; set; }
 }
}
}

12 changes: 8 additions & 4 deletions
src/Mapster.DependencyInjection.Tests/Mapster.DependencyInjection.Tests.csproj

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@@ -1,16 +1,20 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.DependencyInjection/Mapster.DependencyInjection.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Dependency Injection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;DependencyInjection</PackageTags>
Expand Down

6 changes: 3 additions & 3 deletions
src/Mapster.EFCore.Tests/Mapster.EFCore.Tests.csproj

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Expand Up@@ -8,9 +8,9 @@

 <ItemGroup>
 <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

12 changes: 8 additions & 4 deletions
src/Mapster.Immutable.Tests/Mapster.Immutable.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="coverlet.collector" Version="6.0.2">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
Expand Down

2 changes: 1 addition & 1 deletion
src/Mapster.Immutable/Mapster.Immutable.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Immutable collection supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Immutable</PackageTags>
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12 changes: 8 additions & 4 deletions
src/Mapster.JsonNet.Tests/Mapster.JsonNet.Tests.csproj

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@@ -1,15 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
	<IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 </ItemGroup>

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2 changes: 1 addition & 1 deletion
src/Mapster.JsonNet/Mapster.JsonNet.csproj

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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">

 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>netstandard2.0;net10.0;net9.0;net8.0</TargetFrameworks>
 <Description>Json.net conversion supports for Mapster</Description>
 <IsPackable>true</IsPackable>
 <PackageTags>Mapster;Json.net</PackageTags>
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15 changes: 10 additions & 5 deletions
src/Mapster.Tests/Mapster.Tests.csproj

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@@ -1,7 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<Project Sdk="Microsoft.NET.Sdk">
 <PropertyGroup>
 <TargetFrameworks>net10.0;net9.0;net8.0;</TargetFrameworks>
 <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
 <IsTestProject>true</IsTestProject>
 <IsPackable>false</IsPackable>
 <AssemblyName>Mapster.Tests</AssemblyName>
Expand All@@ -10,13 +10,18 @@
 <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
 <LangVersion>11.0</LangVersion>
 </PropertyGroup>

 <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
 <TargetFrameworks>$(TargetFrameworks);net48</TargetFrameworks>
 </PropertyGroup>
 <ItemGroup>
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
 <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
 <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
 <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
 <PackageReference Include="MSTest.TestAdapter" Version="4.0.2" />
 <PackageReference Include="MSTest.TestFramework" Version="4.0.2" />
 <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 <PackageReference Include="Shouldly" Version="4.2.1" />
 <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
 <PackageReference Include="System.Text.Json" Version="10.0.2" Condition="'$(TargetFramework)' == 'net48'" />
 </ItemGroup>
 <ItemGroup>
 <ProjectReference Include="..\ExpressionDebugger\ExpressionDebugger.csproj" />
Expand All@@ -34,4 +39,4 @@
 <Compile Remove="Diagnostics\GlobalReference.cs" />
 <Compile Remove="Diagnostics\TypeAdapterConfigExtensions.cs" />
 </ItemGroup>
</Project>
</Project>

19 changes: 19 additions & 0 deletions
src/Mapster.Tests/Polyfills/CompileWithDebugInfo.net48.cs

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#if NET48
using System;

namespace System.Linq.Expressions
{
 internal static class CompileWithDebugInfoPolyfill
 {
 public static Delegate CompileWithDebugInfo(this LambdaExpression node)
 {
 return node.Compile();
 }

 public static T CompileWithDebugInfo<T>(this Expression<T> node)
 {
 return node.Compile();
 }
 }
}
#endif

38 changes: 38 additions & 0 deletions
src/Mapster.Tests/Polyfills/RequiredMemberAttributes.net48.cs

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#if NET48
using System;

namespace System.Runtime.CompilerServices
{
 [AttributeUsage(AttributeTargets.All, AllowMultiple = false, Inherited = false)]
 internal sealed class RequiredMemberAttribute : Attribute
 {
 public RequiredMemberAttribute()
 {
 }
 }

 [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = false)]
 internal sealed class CompilerFeatureRequiredAttribute : Attribute
 {
 public CompilerFeatureRequiredAttribute(string featureName)
 {
 FeatureName = featureName;
 }

 public string FeatureName { get; }

 public bool IsOptional { get; set; }
 }
}

namespace System.Diagnostics.CodeAnalysis
{
 [AttributeUsage(AttributeTargets.Constructor, AllowMultiple = false, Inherited = false)]
 internal sealed class SetsRequiredMembersAttribute : Attribute
 {
 public SetsRequiredMembersAttribute()
 {
 }
 }
}
#endif

14 changes: 14 additions & 0 deletions
src/Mapster.Tests/Polyfills/TypeGetConstructorOverload.net48.cs

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#if NET48
using System;

namespace System.Reflection
{
 internal static class TypeGetConstructorOverloadPolyfill
 {
 public static ConstructorInfo? GetConstructor(this Type type, BindingFlags bindingAttr, Type[] types)
 {
 return type.GetConstructor(bindingAttr, binder: null, types: types, modifiers: null);
 }
 }
}
#endif
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