Question

I did a little research, and an unsure if I should be using

the Microsoft.Office.Interop.Excel

Just to clarify with the example: I’m taking a .txt, and doing stuff, then saving it as a .CSV (Comma Separated Values). I want to then open it (on button click or something…)

How can this be done?

Answer 1

Pair to your comment:

I want it to open in Excel.exe. It should be a separate window that launches after my program is done with its conversion

Simply start it using System.Diagnostics.Process class:

using System.Diagnostics.Process;//at top of your application

//
//At button click or after you finish editing
//
Process excel = new Process();

//if the excel was installed in the target machine and the default program to open csvs
//then you can simply just call process start and put the file path, like:
excel.Start(@"Your edited csv file path");

//otherwise:
excel.StartInfo.FileName = @"The excel application file path";
excel.StartInfo.Arguments = @"Your edited csv file path";
excel.Start();