How to read open excel file at C#

Question

I want to read already open excel file with C#. I am using this method but it can\'t read the excel file while the file is open in Microsoft excel.

FileStre         


        

Answer 1

You could use the Interop library to use the already opened instance of Excel.

oExcel == (Excel.Application) System.Runtime.InteropServices.Marshal.GetActiveObject("Excel.Application")