using System;

​

public class Test

{

    public static void Main()

    {

        Action action = new Action(Method1);

        var hash1 = action.GetHashCode();

        var action1 = action;

        action += Method2;

        var hash2 = action.GetHashCode();

        var action2 = action

        action -= Method2;

        var hash3 = action.GetHashCode();

        var action3 = action;

        Console.WriteLine(hash1);

        Console.WriteLine(hash2);

        Console.WriteLine(hash3);

        Console.WriteLine(hash1 == hash3);

        Console.WriteLine(action1 == action2);

        Console.WriteLine(action1 == action3);

    }

    public static void Method1(){}

    public static void Method2(){}

}