using System;

using System.Collections;

using System.Collections.Generic;

using System.Diagnostics;

public class Program

{

    public static void Main()

    {

        var iter = 10000000;

        var unboxParam = new object[] {1};

        var castParam = new object[] {new Test() {P1 = 1}}; 

        var dictParam = new object[] {new Dictionary<string, object>() {{ "p1", 1 }}};

        TestUnboxing(100, unboxParam);

        TestCast(100, castParam);

        TestDictionary(100, dictParam);

        var watch = new Stopwatch();

        watch.Restart();

        TestUnboxing(iter, unboxParam);

        Console.WriteLine(watch.ElapsedMilliseconds);

        watch.Restart();

        TestCast(iter, castParam);

        Console.WriteLine(watch.ElapsedMilliseconds);

        watch.Restart();

        TestDictionary(iter, dictParam);

        Console.WriteLine(watch.ElapsedMilliseconds);

    }

    private static void TestUnboxing(int iter, object[] param)

    {

        for (var i= 0; i < iter; i++)

        {

            var num = (int)param[0];

        }

    }

    private static void TestCast(int iter, object[] param)

    {

        for (var i= 0; i < iter; i++)

        {

            var num = ((Test)param[0]).P1;

        }

    }

    private static void TestDictionary(int iter, object[] param)

    {

        for (var i= 0; i < iter; i++)

        {

            var num = ((Dictionary<string, object>)param[0])["p1"];

        }

    }

    private class Test

    {

        public int P1 {get;set;}

    }

}