private void UserNameEditIcon_OnTapped(object sender, TappedRoutedEventArgs e)
{
UserNameTextBox.Visibility = Visibility.Visible;
UserNameTextBlock.Visibility = Visibility.Collapsed;
UserNameEditIcon.Visibility = Visibility.Collapsed;
UserNameSaveIcon.Visibility = Visibility.Visible;
UserNameTextBox.Focus(FocusState.Pointer);
}