how to open a text file as an Excel file inside a Wpf window(C#)

Hi,

For that you have to import :: using System.Windows.Xls.Packaging;

XlsDocument is a class for read, write and edit of Excel files.
And yes you can do that using mode change. Just change mode from read to write in code.

Hi Sahil jani, 
   Thanks for ur reply.
   What is XlsDocument  ? and from which assembly can I get this ?
   Even I should be able to edit(Cut/Copy/Paste) the opened excel file.

Thanks & Regards,
Ramana

Hi Ramana,

I have attached one file that one might be help ful to you.