using System;

using Newtonsoft.Json;

using System.Reflection;

public class Program

{

    public static void Main()

    {

        Foobar myObj = new Foobar();

​

        myObj.Something = new SomeOtherClass() { Bar = "My first", Foo = "fqwkifjwq" };

        var settings = new JsonSerializerSettings

        {

            TypeNameHandling = TypeNameHandling.Auto,

            Formatting = Formatting.Indented

        };

        string json = JsonConvert.SerializeObject(myObj, settings);

        Console.WriteLine(json);

        Console.WriteLine();

        myObj = JsonConvert.DeserializeObject<Foobar>(json, settings);

        Console.WriteLine(myObj.Something.GetType().Name);

        Console.WriteLine(((SomeOtherClass)myObj.Something).Foo);

        Console.WriteLine(((SomeOtherClass)myObj.Something).Bar);

    }

}

​

class Foobar

{

    [JsonProperty("something")]

    public object Something { get { return something; } set { something = value; } }

    private object something;

​

    [JsonIgnore]

    private string someOtherObject = "foobar";

}

​

class SomeOtherClass

{

    public string Foo { get; set; }

    public string Bar { get; set; }

}

​