Editing an excel file downloaded from a server and opened with Process.start

Hi,

I have a template that is an excel file. This template had been uploaded to the server.


My application downloads this template but I would like to populate it with values from the application.

I download it using file stream and then open it using process.start, I don't know how to then populate the file with values because I don't know it's file path, can anyone help me?