Creating add-in for Excel using C#

Question

I want to use C# class methods in Excel. Can anybody guid me how to do it ? The C# component will be excel add-in. How to create setup for this addin, so that I just need to

Answer 1

(Disclaimer: I develop the Excel-Dna library.)

You should have a look at Excel-Dna - http://excel-dna.net. The library allows managed assemblies written in C#, VB.NET or F# to expose high-performance user-defined functions (UDFs) and macros to Excel through the native .xll interface. The project is open-source and freely allows commercial use.

With Excel-Dna you can create a single .xll add-in file that the user can open as an add-in without any further installation or registration. Excel-Dna add-ins can expose RTD servers and customized Ribbons for Excel 2007 and Excel 2010 without additional registration, so you need no extra setup program.