Working with Excel in C#?

Question

C++ / C#

How to find out what is located at the address of a specific cell
inside an excel spreadsheet file

Answer 1

https://github.com/JanKallman/EPPlus

Answer 2

load a library for working with Excel like Excel.Application or something like that, you specify the path to the book / file, you specify the sheet, you read the cell. list.cells[1,1].value or something like that

Answer 3

You can find out what is in the cell only by opening the file (you can do it in the background). I don't consider exotic ways to access content (like adodb for example).
Read about "late binding" when opening an Excel file. The code is easy to google and adapt.