public JObject WxInit()         {             string init_json = "{{"BaseRequest":{{"Uin":"{0}","Sid":"{1}","Skey":"","DeviceID":"e1615250492"}}}}";             Cookie sid = BaseService.GetCookie("wxsid");             Cookie uin = BaseService.GetCookie("wxuin");              if (sid != null && uin != null)             {                 init_json = string.Format(init_json, uin.Value, sid.Value);                 byte[] bytes = BaseService.SendPostRequest(_init_url + "&pass_ticket=" + LoginService.Pass_Ticket, init_json);                 string init_str = Encoding.UTF8.GetString(bytes);                  JObject init_result = JsonConvert.DeserializeObject(init_str) as JObject;                  foreach (JObject synckey in init_result["SyncKey"]["List"])  //同步键值                 {                                        _syncKey.Add(synckey["Key"].ToString(), synckey["Val"].ToString()); //已添加了具有相同键的项 求帮忙下，我是在winform想实现                 }                 return init_result;             }             else             {                 return null;             }         }         /// <summary>         /// 获取好友头像         /// </summary>         /// <param name="username"></param>         /// <returns></returns>         public Image GetIcon(string username)         {             byte[] bytes = BaseService.SendGetRequest(_geticon_url + username);             return Image.FromStream(new MemoryStream(bytes));         }         /// <summary>         /// 获取微信讨论组头像         /// </summary>         /// <param name="usename"></param>         /// <returns></returns>         public Image GetHeadImg(string usename)         {             byte[] bytes = BaseService.SendGetRequest(_getheadimg_url + usename);              return Image.FromStream(new MemoryStream(bytes));         }