using System;

using System.IO;

using System.Collections.Generic;

using System.Runtime.Serialization.Formatters.Binary;

​

public class Program

{

    [Serializable]

    public class TestClass1

    {

        private string attr1;

        public readonly Dictionary<int, string> list1;

        public TestClass1()

        {

            attr1 = "TestClass1";

            list1 = new Dictionary<int, string>()

            {{1, "one"}, {2, "two"}, };

        }

​

        public string getAttr()

        {

            return attr1;

        }

    }

​

    [Serializable]

    public class TestClass2

    {

        private string attr1;

        public readonly Dictionary<int, string> list1 = new Dictionary<int, string>()

        {{1, "one"}, {2, "two"}, {3, "thr"},};

        public TestClass2()

        {

            attr1 = "TestClass2";

        }

​

        public string getAttr()

        {

            return attr1;

        }

    }

​

    public static void Main()

    {

        TestClass1 tc1 = new TestClass1();

        TestClass2 tc2 = new TestClass2();

        using (Stream s1 = new MemoryStream(), s2 = new MemoryStream())

        {

            BinaryFormatter formatter = new BinaryFormatter();

            formatter.Serialize(s1, tc1);

            formatter.Serialize(s2, tc2);

            Console.WriteLine("tc1 size: " + s1.Length);

            Console.WriteLine("tc2 size: " + s2.Length);

        }

    }

}