1.下载并应用LitJson,DLL文件

2.建两个类；

代码如下:
   public class JsonData
    {
        public string result { get; set; }
        public List<GameData> info { get; set; }
    }

      public GameData()
        { }
        #region Model
        private int _id;
        private string _dept;
        private string _sid;
        private string _oldsid;
        private string _userid;
        private string _roleid;
        private string _rolename;
        private string _rolelevel;
        private string _gold;
        private string _money;
        private string _inittime;
        private string _lastlogin;
        private string _querytime;
        /// <summary>
        ///
        /// </summary>
        public int ID
        {
            set { _id = value; }
            get { return _id; }
        }
        /// <summary>
        /// 平台编号
        /// </summary>
        public string dept
        {
            set { _dept = value; }
            get { return _dept; }
        }
        /// <summary>
        /// 服务器编号
        /// </summary>
        public string sid
        {
            set { _sid = value; }
            get { return _sid; }
        }
        /// <summary>
        /// 原始服务器编号
        /// </summary>
        public string oldsid
        {
            set { _oldsid = value; }
            get { return _oldsid; }
        }
        /// <summary>
        /// 用户平台ID
        /// </summary>
        public string userid
        {
            set { _userid = value; }
            get { return _userid; }
        }
        /// <summary>
        ///
        /// </summary>
        public string roleid
        {
            set { _roleid = value; }
            get { return _roleid; }
        }
        /// <summary>
        /// 角色名
        /// </summary>
        public string rolename
        {
            set { _rolename = value; }
            get { return _rolename; }
        }
        /// <summary>
        /// 角色等级
        /// </summary>
        public string rolelevel
        {
            set { _rolelevel = value; }
            get { return _rolelevel; }
        }
        /// <summary>
        /// 金子
        /// </summary>
        public string gold
        {
            set { _gold = value; }
            get { return _gold; }
        }
        /// <summary>
        /// 银子
        /// </summary>
        public string money
        {
            set { _money = value; }
            get { return _money; }
        }
        /// <summary>
        /// 角色创建时间
        /// </summary>
        public string inittime
        {
            set { _inittime = value; }
            get { return _inittime; }
        }
        /// <summary>
        /// 最后登录时间
        /// </summary>
        public string lastlogin
        {
            set { _lastlogin = value; }
            get { return _lastlogin; }
        }
        /// <summary>
        /// 查询时间
        /// </summary>
        public string querytime
        {
            set { _querytime = value; }
            get { return _querytime; }
        }
        #endregion Model

3.读取数据

代码如下:
  string json_str = @"{""result"":""1"",""info"":[{""sid"":""2"",""rolename"":""蒲翠柏"",""roleid"":""900001"",""lastlogin"":""2014-01-08 10:54:52"",""inittime"":""2013-11-15 12:01:05.0"",""money"":""867"",""rolelevel"":""55"",""userid"":""athena"",""oldsid"":""1"",""gold"":""9992837"",""dept"":""67"",""querytime"":""2014-01-08 11:56:38""},{""sid"":""2"",""rolename"":""噗"",""roleid"":""5700001"",""lastlogin"":""2013-11-16 18:38:54"",""inittime"":""2013-11-16 18:25:45.0"",""money"":""0"",""rolelevel"":""27"",""userid"":""athena"",""oldsid"":""1"",""gold"":""0"",""dept"":""67"",""querytime"":""2014-01-08 11:56:38""},{""sid"":""2"",""rolename"":""惠光赫"",""roleid"":""2800001"",""lastlogin"":""2013-11-15 15:00:07"",""inittime"":""2013-11-15 14:59:25.0"",""money"":""0"",""rolelevel"":""1"",""userid"":""athena"",""oldsid"":""1"",""gold"":""0"",""dept"":""67"",""querytime"":""2014-01-08 11:56:38""}]}";

               GameWindowsService.Common.JsonData jsonData = LitJson.JsonMapper.ToObject<GameWindowsService.Common.JsonData>(json_str);

                List<GameData> gameDataList = jsonData.info;
                foreach (var gameData in gameDataList)
                {
                    Common.Common.WriteFile(gameData.Add().ToString());
                }