Can we write a macro in C# for Excel

Question

I have to traverse about 25 sheets in excel for doing operations.I\'m doing it using vba and finding it really slow,hence wanted to know if I could use C# and if doing that

Answer 1

Call C# from Excel workbook like VBA macro - you can't

Access Excel workbook from C# application - you can. This is called Microsoft Visual Studio Tools for Office (VSTO)