Basic XLL Excel Addin - need to call C # API from Excel

Question

I am new to excel add-ons.

I used to create a tlb library for .NET. I used my .NET class COMVISIBLE and created a Com callable wrapper and registered as tlb to call from Excel (using regasm).

Now I have a math library written in C #. I realized that there is something called XLL and UDF that I can use to call the API from the DLL. A bit confused in XLA, XLL and UDF. Not sure what to do to call my APIs.

I don’t know where to start. Any help would be helpful.

Thanks Mani

Answer 1

Take a look at XLDNA , XLL + , Addin Express , VSTO , etc.

Answer 2

Be sure to also take a look at http://nxll.codeplex.com .