private void searchCompleted(object sender, TimLoThuocCompletedEventArgs e) { try { if (e.Result != null && e.Result.Count > 0) { ketQuaTimKiem = e.Result; } else { ketQuaTimKiem.Clear(); } this.Refresh(); } catch (Exception) { this.messagePop.SetSingleError(CommonResource.errorCannotConnectServer); } finally { MyHelper.IsFree(); } }