using System;
using System.IO;
using System.Runtime.Serialization;

namespace TestApp
{
    public interface ICloneable<out T>
    {
        T Clone();
    }

    [DataContract(Name = "Test2_name", Namespace = "Test2_namespace")]
    public class Test2 : ICloneable<Test2>
    {
        private string _message = string.Empty;

        [DataMember(Name = "Message")]
        public string Message
        {
            get { return _message; }
            set { _message = value; }
        }

        public Test2 Clone()
        {
            var serializer = new DataContractSerializer(typeof(Test2), null, int.MaxValue, false, true, null);
            using (var ms = new MemoryStream())
            {
                serializer.WriteObject(ms, this);
                ms.Position = 0;
                return (Test2)serializer.ReadObject(ms);
            }
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            Test2 test2 = new Test2();
            test2.Message = "hello";
            var s2 = test2.Clone();
            Console.WriteLine(s2.Message);
        }
    }
}