using System;

using System.IO;

using Newtonsoft.Json;

using Newtonsoft.Json.Bson;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var x = new Test{Testing="Testing"};

        byte[] requestBytes;

        using (var stream = new MemoryStream()) 

            using (var writer = new BsonWriter(stream)) {

            var searializer = new JsonSerializer();

            searializer.Serialize(writer, x);

            requestBytes = stream.ToArray();

        }

​

        ITest a;

        using (var stream2 = new MemoryStream(requestBytes)) 

        using (var reader = new BsonReader(stream2)) {

            var serializer = new JsonSerializer() {

                TypeNameHandling = TypeNameHandling.None

            };

​

            dynamic z = serializer.Deserialize<Test>(reader);

            a = (ITest) z;

        }

        if (a != null)

            Console.WriteLine(a.Testing);

    }

    public interface ITest {

        string Testing {get;set;}

    }

    public class Test : ITest {

        public string Testing {get;set;}

    }

}