EPPlus.Sample.NetCore/09-PerformanceAndProtection/PerformanceAndProtectionSample.cs at master · EPPlusSoftware/EPPlus.Sample.NetCore · GitHub

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/*************************************************************************************************
 Required Notice: Copyright (C) EPPlus Software AB.
 This software is licensed under PolyForm Noncommercial License 1.0.0
 and may only be used for noncommercial purposes
 https://polyformproject.org/licenses/noncommercial/1.0.0/

 A commercial license to use this software can be purchased at https://epplussoftware.com
 *************************************************************************************************
 Date Author Change
 *************************************************************************************************
 01/27/2020 EPPlus Software AB Initial release EPPlus 5
 *************************************************************************************************/
usingSystem;
usingSystem.Collections.Generic;
usingSystem.Text;
usingSystem.IO;
usingOfficeOpenXml;
usingOfficeOpenXml.Style;
usingSystem.Drawing;

namespaceEPPlusSamples.PerformanceAndProtection
{
classPerformanceAndProtectionSample
{
/// <summary>
/// This sample load a number of rows, style them and insert a row at the top.
/// A password is set to protect locked cells. Column 3 & 4 will be editable, the rest will be locked.
/// </summary>
/// <param name="rows"></param>
publicstaticstringRun(introws)
{
varnewFile=FileUtil.GetCleanFileInfo("09-PerformanceAndProtection.xlsx");
using(ExcelPackagepackage=newExcelPackage())
{
Console.WriteLine("{0:HH.mm.ss}\tStarting...",DateTime.Now);

//Load the sheet with one string column, one date column and a few random numbers.
varws=package.Workbook.Worksheets.Add("Performance Test");

//Format all cells
ExcelRangecols=ws.Cells["A:XFD"];
cols.Style.Fill.PatternType=ExcelFillStyle.Solid;
cols.Style.Fill.BackgroundColor.SetColor(Color.LightGray);

varrnd=newRandom();
for(introw=1;row<=rows;row++)
{
ws.SetValue(row,1,row);//The SetValue method is a little bit faster than using the Value property
ws.SetValue(row,2,string.Format("Row {0}",row));
ws.SetValue(row,3,DateTime.Today.AddDays(row));
ws.SetValue(row,4,rnd.NextDouble()*10000);
if(row%10000==0)
{
Console.WriteLine("{0:HH.mm.ss}\tWriting row {1}...",DateTime.Now,row);
}
}
//Set the formula using the R1C1 format
ws.Cells[1,5,rows,5].FormulaR1C1="RC[-4]+RC[-1]";

//Add a sum at the end
ws.Cells[rows+1,5].Formula=string.Format("Sum({0})",newExcelAddress(1,5,rows,5).Address);
ws.Cells[rows+1,5].Style.Font.Bold=true;
ws.Cells[rows+1,5].Style.Numberformat.Format="#,##0.00";

Console.WriteLine("{0:HH.mm.ss}\tWriting row {1}...",DateTime.Now,rows);
Console.WriteLine("{0:HH.mm.ss}\tFormatting...",DateTime.Now);
//Format the date and numeric columns
ws.Cells[1,1,rows,1].Style.Numberformat.Format="#,##0";
ws.Cells[1,3,rows,3].Style.Numberformat.Format="YYYY-MM-DD";
ws.Cells[1,4,rows,5].Style.Numberformat.Format="#,##0.00";

Console.WriteLine("{0:HH.mm.ss}\tInsert a row at the top...",DateTime.Now);
//Insert a row at the top. Note that the formula-addresses are shifted down
ws.InsertRow(1,1);

//Write the headers and style them
ws.Cells["A1"].Value="Index";
ws.Cells["B1"].Value="Text";
ws.Cells["C1"].Value="Date";
ws.Cells["D1"].Value="Number";
ws.Cells["E1"].Value="Formula";
ws.View.FreezePanes(2,1);

using(varrng=ws.Cells["A1:E1"])
{
rng.Style.Font.Bold=true;
rng.Style.Font.Color.SetColor(Color.White);
rng.Style.WrapText=true;
rng.Style.VerticalAlignment=ExcelVerticalAlignment.Center;
rng.Style.HorizontalAlignment=ExcelHorizontalAlignment.Center;
rng.Style.Fill.PatternType=ExcelFillStyle.Solid;
rng.Style.Fill.BackgroundColor.SetColor(Color.DarkBlue);
}

Console.WriteLine("{0:HH.mm.ss}\tAutofit columns and lock and format cells...",DateTime.Now);
ws.Cells[rows-100,1,rows,5].AutoFitColumns(5);//Auto fit using the last 100 rows with minimum width 5
ws.Columns[5].Width=15;//We need to set the width for column F manually since the end sum formula is the widest cell in the column (EPPlus don't calculate any forumlas, so no output text is avalible).

//Now we set the sheet protection and a password.
ws.Cells[2,3,rows+1,4].Style.Locked=false;
ws.Cells[2,3,rows+1,4].Style.Fill.PatternType=ExcelFillStyle.Solid;
ws.Cells[2,3,rows+1,4].Style.Fill.BackgroundColor.SetColor(Color.White);
ws.Cells[1,5,rows+2,5].Style.Hidden=true;//Hide the formula

ws.Protection.SetPassword("EPPlus");

ws.Select("C2");
Console.WriteLine("{0:HH.mm.ss}\tSaving...",DateTime.Now);
package.Compression=CompressionLevel.BestSpeed;
package.SaveAs(newFile);
}
Console.WriteLine("{0:HH.mm.ss}\tDone!!",DateTime.Now);
returnnewFile.FullName;
}
}
}