Edward K. answered 11/02/21
Senior Quality Assurance Engineer 10+ Years in the Software Industry
There is a great company called Aspose, which provides .Net libraries to handle Excel files. You can also use the libraries provided by Microsoft: https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/interop/how-to-access-office-onterop-objects
Please reach out if you have further questions!