Send Message in C#

Question

I\'m creating an application that uses a main project that is connected to several different DLLs. From one DLL window I need to be able to open a window in another but the

Answer 1

Building on Mark Byers's answer.

The 3rd project could be a WCF project, hosted as a Windows Service. If all programs listened to that service, one application could call the service. The service passes the message on to all listening clients and they can perform an action if suitable.

Good WCF videos here - http://msdn.microsoft.com/en-us/netframework/dd728059