如何使用 C# 写入现有 Excel (xlsc) 文件中的特定单元格

Question

I managed to read from an Excel file using IExcelDataReader, now I wish to write to specific cells in an existing Excel file, so I need to specify path to the file, column and row where the data should be inserted. I googled and found some examples but there were disputes whether the solutions worked or not. So which is the simplest way of doing this (code examples appriciated). Thanks.

Edit: So I tried doing this:

Excel.Application ExcelObj = new Excel.Application();
Excel.Workbook theWorkbook = ExcelObj.Workbooks.Open("Path", 0, true, 5,"", "", true,     Excel.xlWindows, "\t", false, false,0, true); 

But get the type or namespace name "Application" does not exist in the namespace Excel. And the same for "Workbook".

I added the references Microsoft.Office.Interop.Excel and Office. What more do I need?

Answer 1

Using the following should sort out your namespace issues:

using Excel = Microsoft.Office.Interop.Excel;

To write to a cell you can use the following (assuming you already have a Worksheet object):

xlWorksheet.Cells["1", "A"] = "Foo";

This is the method I've been using for a couple of years and it's worked without fail every time.

Answer 2

You can also try doing this using some rpa tool such as G1ANT. It will make your work much easy. Try this simple code for updating cell:

addon xlsx version 4.101.0.0
addon core version 4.101.0.0
addon language version 4.103.0.0
xlsx.open C:\Documents\TestBook.xlsx createifnotexist true
xlsx.setvalue value 123 row 1 colname a
xlsx.close