using System;

using Newtonsoft.Json;

​

public class DownloadHelper {

        private String _URL;

        private String _FilePath;

        public String URL

        {

            get { return _URL; }

            set

            {

                _URL = value;

                Download();

            }

        }

        public String FilePath

        {

            get { return _FilePath; }

            set

            {

                _FilePath = value;

            }

        }

    public void Download() {}

    }

​

​

public class Program

{

    public static void Main()

    {

        DownloadHelper c = new DownloadHelper();

        c.URL = "http://10.10.14.26/";

        c.FilePath = "foobar";

        string json = JsonConvert.SerializeObject(c, Formatting.None, new JsonSerializerSettings{TypeNameHandling = TypeNameHandling.All});

        Console.WriteLine(json);

        var cereal = JsonConvert.DeserializeObject(json, new JsonSerializerSettings {TypeNameHandling = TypeNameHandling.Auto});

        Console.WriteLine(cereal);

​

    }

}