using System;

​

public class Program

{

    static Action action1;

    static Action action2;

    public static void Main()

    {

        //

        // the Both method goes on the invokation list of both action1 and action2

        action1 = Both;

        action2 = action1;

        //      

        // anything now assigned to action1 only goes to action1

        action1 += OnlyAction1;

        //

        // and anything now assigned to action2 only goes to action2

        action2 += OnlyAction2;

        //

        foreach (var d in action1.GetInvocationList())

            Console.WriteLine(d.Method.Name);

        foreach (var d in action2.GetInvocationList())

            Console.WriteLine(d.Method.Name);

    }

​

    public static void Both() {}

    public static void OnlyAction1() {}

    public static void OnlyAction2() { }

}