Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;

namespace BookListRazor
{
 public class Program
 {
 public static void Main(string[] args)
 {
 CreateHostBuilder(args).Build().Run();
 }

 public static IHostBuilder CreateHostBuilder(string[] args) =>
 Host.CreateDefaultBuilder(args)
 .ConfigureWebHostDefaults(webBuilder =>
 {
 webBuilder.UseStartup<Startup>();
 });
 }
}