protected override void OnValueChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
// Get the caller
var passwordBox = sender as PasswordBox;
// Make sure it is a password box
if (passwordBox == null)
{
return;
}
// Remove any previous events
passwordBox.PasswordChanged -= PasswordBox_PasswordChanged;
// If the caller set MonitorPassword to true...
if ((Boolean)e.NewValue)
{
// Set default value
HasTextProperty.SetValue(passwordBox);
// Start listening out for password changes
passwordBox.PasswordChanged += PasswordBox_PasswordChanged;
}
}
private void PasswordBox_PasswordChanged(Object sender, RoutedEventArgs e)
{
// Set the attached HasText value
HasTextProperty.SetValue((PasswordBox)sender);
}