How to merge excel cells based on the cell value using C#

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I am using excel interop with c# I want to merge all adjacent cells that contain a specific value using c# code.

How to merge all the cells that contains the value (Merged cells) using c# code.

What I have tried:

I am trying this,

String startRange = "C2";
String endRange = "C7";
String repetitiveValue = "Merged Cells";
Microsoft.Office.Interop.Excel.Range xlrange = (Microsoft.Office.Interop.Excel.Range)objexcelapp.Cells[startRange, endRange];
xlrange.Value2 = repetitiveValue;
xlrange.Merge(System.Reflection.Missing.Value);

Posted 26-May-19 22:27pm

Member 14376506

Updated 27-May-19 0:25am

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mohamedenew · Answer 1 · 2019-05-27T00:26:00

Solution 1

You can use this package it can do every thing for excel , it's very easy for use.

NuGet Gallery | EPPlus 4.5.3.1[^]

e.g. if you want to export DataTable to Excel

using (ExcelPackage pck = new ExcelPackage(newFile))
{
  ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Accounts");
  ws.Cells["A1"].LoadFromDataTable(dataTable, true);
  pck.Save();
}

Posted 27-May-19 0:26am

mohamedenew

Comments

Member 14376506 27-May-19 6:32am

I'll installed (EPPlus) this library and using below code:

using (var excel = new ExcelPackage(new System.IO.FileInfo(@"physical_address_of_your_xslx_file")))
{
var sheet1 = excel.Workbook.Worksheets["Sheet1"];
sheet1.Cells["C2:C7"].Merge = true;
sheet1.Cells["C2:C7"].Style.VerticalAlignment = OfficeOpenXml.Style.ExcelVerticalAlignment.Bottom;
sheet1.Cells["C2"].Value = "The value";

excel.Save();
}

But Its showing exceptional error: An unhandled exception of type 'System.NullReferenceException' occurred in ExportExcel.exe Additional information: Object reference not set to an instance of an object.