private void PrimaryInput_KeyDown(object sender, KeyRoutedEventArgs e) { if (e.Key == Windows.System.VirtualKey.Back && string.IsNullOrEmpty(PrimaryInput.Text)) { PhoneCode.Focus(FocusState.Keyboard); PhoneCode.SelectionStart = PhoneCode.Text.Length; e.Handled = true; } }
private void PhoneNumber_KeyDown(object sender, KeyRoutedEventArgs e) { if (e.Key == Windows.System.VirtualKey.Enter) { ViewModel.SendCommand.Execute(null); e.Handled = true; } else if (e.Key == Windows.System.VirtualKey.Back && string.IsNullOrEmpty(PrimaryInput.Text)) { PhoneCode.Focus(FocusState.Keyboard); PhoneCode.SelectionStart = PhoneCode.Text.Length; e.Handled = true; } }