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c# – How to set value of Excel cell by name instead of using coordinates with EPPlus?

Posted by: admin April 23, 2020 Leave a comment

Questions:

I am able to set cell values using EPPlus:

var template = new FileInfo(Server.MapPath("~/App_Data/my_template.xlsx"));
var pck = new ExcelPackage(template);
var ws = pck.Workbook.Worksheets.First();
ws.Cells[15, 4].Value = 66; 
ws.Cells["B1"].Value = 55;

Instead of addressing the target cell by its coordinates I would like
to use a named cell/variable “profits”.

ws.Range("profits").Value = 66;

However, EPPlus does not support ws.Range(…).

=> Is it nevertheless possible to do so? How would I write an extension method that provides the wanted functionality?

Related articles/questions:

a) Doc for EPPlus:

http://epplus.codeplex.com

b) How to use named cells/variables in Excel:

https://www.computerhope.com/issues/ch000704.htm

What's the RIGHT way to reference named cells in Excel 2013 VBA? (I know I'm messing this up)

c) Libraries for creating Excel Files with C#

Create Excel (.XLS and .XLSX) file from C#

How to&Answers:
var profits = pck.Workbook.Names["profits"];
profits.Value = 66;

from

Is there a way to get 'named' cells using EPPlus?

It is also possible to set the values for a named range:

var ws = pck.Workbook.Worksheets.First();
using (var namedRange = pck.Workbook.Names["MyNamedRange"])
      {
        for (int rowIndex = namedRange.Start.Row; rowIndex <= namedRange.End.Row; rowIndex++)
        {
          for (int columnIndex = namedRange.Start.Column; columnIndex <= namedRange.End.Column; columnIndex++)
          {
            ws.Cells[rowIndex, columnIndex].Value = 66;
          }
        }
      }

from

EPPlus, Find and set the value for a Named Range