using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Test()

    {

        Console.WriteLine("Worked!");

    }

    public static void Main()

    {

        Dictionary<string, Action> x = new Dictionary<string, Action >();

        x.Add("key1", Program.Test);

        x["key1"] += Test;

        x.Add("key2", Program.Test);

        x.TryGetValue("key2", out Action y);

        y += Test;

        Console.WriteLine(x["key1"].GetInvocationList().Length);        

        Console.WriteLine(x["key2"].GetInvocationList().Length);

    }

}