using DevComponents.DotNetBar;
using MyControl;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Web.Script.Serialization;
using System.Windows.Forms;

namespace InternetDis
{
    public class clsSystem
    {
        public static T JsonStringToCls<T>(string JsonStr)
        {
            StringReader strReader = new StringReader(JsonStr);
            T clsObj = (T)(new JsonSerializer()).Deserialize(new JsonTextReader(strReader), typeof(T));
            return clsObj;
        }
    }public class JsonResult
    {
        public string result { get; set; }
        public string description { get; set; }
    }
}

JsonResult JsonRst = new JsonResult() { result = "-1" };
StreamReader reader = new StreamReader(stream);
string strRst = reader.ReadToEnd();
JsonRst = clsSystem.JsonStringToCls<JsonResult>(strRst);