Question

I’m writing a program that allows developers to write AddIn’s for it and I’d like developers to be able to hook into events happening in the program.

My code isn’t compiling because I can’t declare a delegate in the IMyProgram interface.

So I suppose this is more of a design question. How would you go about getting an interface passed to the AddIn so the AddIn can hook into program events?

[AddInContract]     public interface IMyProgramAddInContract : IContract {          /// <summary>         /// Initializes AddIn         /// </summary>         void Init(IMyProgram instance);          System.Drawing.Image AddInIcon { get; }          String DisplayName { get; }          String Description { get; }     }      [AddInContract]     public interface IMyProgram : IContract {          public delegate EventHandler EmailEventHandler(object sender, EmailEventArgs args);          public event EmailEventHandler BeforeCheck;         public event EmailEventHandler AfterCheck;         public event EmailEventHandler EmailDownloaded;         public event EmailEventHandler OnProcessMessage;      }      [AddInBase]     public class EmailEventArgs : EventArgs {          public override string ToString() {             return 'todo';         }     } 

Answer 1

Problem has been solved.

I had no idea delegates can be declared at the namespace level without being in a class.