public override void OnValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (!(d is PasswordBox passwordBox))
{
return;
}
passwordBox.PasswordChanged -= PasswordBox_PasswordChanged;
if ((bool)e.NewValue)
{
HasTextProperty.SetValue(passwordBox);
passwordBox.PasswordChanged += PasswordBox_PasswordChanged;
}
}
private void PasswordBox_PasswordChanged(object sender, RoutedEventArgs e) => HasTextProperty.SetValue((PasswordBox)sender);