using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Reflection;

using System.Text;

using System.IO;

using System.Runtime.Serialization;

using System.Threading.Tasks;

using System.Linq.Dynamic;

using Newtonsoft.Json;

using System.Runtime.Serialization.Formatters.Binary;

public class Program

{

[Serializable]

class MyData : ISerializable

{

    public string Name { get; set; }

    public int? Value { get; set; }

​

    public MyData() { }

    public MyData(SerializationInfo info, StreamingContext context)

    {

        if (info.GetString("Value") == null)

        Console.WriteLine("null");

    }

​

    public void GetObjectData(SerializationInfo info, StreamingContext context)

    {

        info.AddValue("Name", Name);

       // info.AddValue("Value", null);

    }

}

    public static MemoryStream SerializeToStream(object o)

{

    MemoryStream stream = new MemoryStream();

    IFormatter formatter = new BinaryFormatter();

    formatter.Serialize(stream, o);

    return stream;

}

​

public static object DeserializeFromStream(MemoryStream stream)

{

    IFormatter formatter = new BinaryFormatter();

    stream.Seek(0, SeekOrigin.Begin);

    object o = formatter.Deserialize(stream);

    return o;

}

    public static void Main(string[] args)

    {

        var myData = new MyData();

        var serialized = SerializeToStream(myData);

        var deserialized = DeserializeFromStream(serialized);

    }

}