using System;

using System.Reflection;

​

public delegate void TheDelegate(string message);

public static class Program

{

    public static event TheDelegate TheEvent;

    public static TheDelegate DelInstance;

    public static void Main()

    {

        DelInstance = new TheDelegate(TheMethod);

        DelInstance += TheMethod;

        DelInstance.Invoke("Invoke the delegate.");

        PrintMemberInfo(DelInstance.GetType());

        TheEvent += TheMethod;

        TheEvent += TheMethod;

        TheEvent.Invoke("Invoke the event.");

        PrintMemberInfo(TheEvent.GetType());        

        new AnotherClass();

    }

​

    // Create a method for a delegate. 

    public static void TheMethod(string message)

    {

        Console.WriteLine(message);

    }

​

    public static void PrintMemberInfo(System.Type t)

    {

        foreach (MemberInfo m in t.GetMembers())

        {

            Console.Write(m.Name + ", ");

        }

        Console.WriteLine("\n");

    }

}

​

public class AnotherClass

{

    public AnotherClass()

    {

        Program.DelInstance += new TheDelegate(AnotherMethod);

        Program.DelInstance.Invoke("Another class");

        // Error... we can only call += or -+

        // Program.TheEvent.Invoke();

    }

    public void AnotherMethod(string message)

    {

        Console.WriteLine(message);

    }

}