trying to communication between two form in different project under one solution

Question

hey, i tried to share data between two form in different project under same solution. i have two project(project A,project B) in one solution and i want to send data from project A to Project B. and also at that time i want to activate form from project B and same time wants to close previous form. please help me in this case. i really stuck with it. i am using windows application in C# and soing serial communication