Share .cs file among VS 2010 C# projects

Question

I was wondering if two separate C# Windows projects (in two separate solutions) can share one .cs file with shared definitions? If so, then how?

PS. One project is ASP.N

Answer 1

Move that cs file/code to be shared to a new class library project and refer that in your other 2 projects.

Answer 2

Add Existing Item->Add As Link (found by selecting drop down on Add button)