How to call event delegates from another project in c#/winforms?

Question

frnds,
I have a c# window application,inside there 3 projects which linked to each other?
Among 3 ,2 project are referenced project for the 3rd project.I even add reference 2 projects dll in 3rd project,as a result it shows me all properties of reference project inside  my 3rd project perfectly,but i have 1 problem, i cant access there event delegates from the reference project into 3rd project?If u want i can give the code.Plss help, how can i access event delegates in another project ? i add use the namespace of the referenced project in the 3rd project.?

All 3 project are parts of 1 whole project..?

If u have any doubt let me knw,i will tell ,but i need the solution?Waiting for your positive reply.