using System;

using Newtonsoft.Json;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public class JsonTestClass

    {

        public string Name { get; set; }

        public List<int> MyIntList { get; set; }

        public JsonTestClass Test{get;set;}

        public override bool Equals(object obj)

        {

            if (obj == null)

                return false;

            JsonTestClass jtc = (JsonTestClass)obj;

            return true;

       }

    }

    public static void Main()

    { 

       JsonTestClass c = new JsonTestClass();

       c.Name = "test";

       c.Test = c;

       string json = JsonConvert.SerializeObject

                   (c, new JsonSerializerSettings() { TypeNameHandling = TypeNameHandling.All });

    }

}