two projects

i have two projects in my solution. how can i use a form form my 2a project

They are two windows form project.

I try to add reference from de 2a project to de 1a but a receive a msg , only dll or another thing , not exe files.

Martin Douglas
You cannot reference an executable project in another project. The best thing to do would be to move the form that you want to re-use into a third project that would be referenced by the first two. This is the standard method of re-using code across multiple applications.
ToddT
thank you for your reply.

I try to use another project with windows form's in my current project. I add a 2o project to my current project and try to use a form , but i dont find it in my 1o project ("Reference"). My projects is in VB .net 2003.(Visual Studio)

I try to add a reference of 2o project to my 1o project and i receive de msg "A reference to ...exe could not be added.This is not a valid assembley or COM component. Only assemblies with extension 'dll' and Com components can be referenced.....".

The error is when i try to add a reference of 2o project from a file .exe to my 1o project.
Ruben Edna
It is allowed to add exe file also as reference.Please post the correct error message.Is it complile error or runtime error
two projects