public override void OnValueChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
// get the caller
PasswordBox passwordBox = sender as PasswordBox;
// make sure it is a password box
if (passwordBox == null)
{
return;
}
// remuve any previus events
passwordBox.PasswordChanged -= PasswordBox_PasswordChanged;
// if the caller set MonitorPassword to true...
if ((bool)e.NewValue)
{
// set default value
HasTextProperty.SetValue(passwordBox);
// start listening out for password changes
passwordBox.PasswordChanged += PasswordBox_PasswordChanged;
}
}
// Fired when the password box password value changes
private void PasswordBox_PasswordChanged(object sender, RoutedEventArgs e)
{
// set the attached HasText value
HasTextProperty.SetValue((PasswordBox)sender);
}