using System;

using Newtonsoft.Json;

​

public class Program

{

    public static void Main()

    {

        //Console.WriteLine("Hello World");

        Employee joe = new Employee{Name = "Joe User"};

        Employee mike = new Employee{Name = "Mike Manager"};

        joe.Manager = mike;

        mike.Manager = mike;

        string json = JsonConvert.SerializeObject(joe, Formatting.Indented, new JsonSerializerSettings{ReferenceLoopHandling = ReferenceLoopHandling.Serialize});

        Console.WriteLine(json);

    }

​

    public class Employee

    {

        public string Name

        {

            get;

            set;

        }

​

        public Employee Manager

        {

            get;

            set;

        }

    }

}