Can the same DLL data be shared by 2 different processes?

Question

I have two different C# applications that are running at the same time.

I would like both of them to be able to access the same \"instance\" of a DLL (also in C#).

Answer 1

A DLL has no instance, it is loaded in a host process. Reference the assembly in both applications and use its classes/methods.

If you want to avoid deploying the same assembly for both applications you could put it in the GAC.