public ExtendServerEventArgs(ExtendServerResult result, string originResult, object token)
     : base(token)
 {
     Result = result;
     OriginResult = originResult;
 }
 private void request_Completed(object sender, RequestEventArgs e)
 {
     ExtendServerResult result = ExtendServerResult.FromJson(e.Result);
     lastResult = result;
     ExtendServerEventArgs args = new ExtendServerEventArgs(result, e.Result, e.UserState);
     OnProcessCompleted(args);
 }