private async void SendExecute() { if (string.IsNullOrEmpty(_phoneCode)) { RaisePropertyChanged("PHONE_CODE_INVALID"); return; } if (string.IsNullOrEmpty(_phoneNumber)) { RaisePropertyChanged("PHONE_NUMBER_INVALID"); return; } IsLoading = true; var response = await LegacyService.SendChangePhoneCodeAsync(_phoneCode + _phoneNumber, /* TODO: Verify */ null); if (response.IsSucceeded) { var state = new SettingsPhoneSentCodePage.NavigationParameters { PhoneNumber = PhoneCode.TrimStart('+') + PhoneNumber, Result = response.Result, }; NavigationService.Navigate(typeof(SettingsPhoneSentCodePage), state); } else if (response.Error != null) { IsLoading = false; if (response.Error.TypeEquals(TLErrorType.PHONE_NUMBER_FLOOD)) { await TLMessageDialog.ShowAsync("Sorry, you have deleted and re-created your account too many times recently. Please wait for a few days before signing up again.", "Telegram", "OK"); } else { await new TLMessageDialog(response.Error.ErrorMessage ?? "Error message", response.Error.ErrorCode.ToString()).ShowQueuedAsync(); } } }