public override void OnValueChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
// Get the caller
// Mark sure it is a password box
if (!(sender is PasswordBox passwordBox))
{
return;
}
// Remove any previous events
passwordBox.PasswordChanged -= PasswordBox_PasswordChanged;
// If the caller set MonitorPassword to true...
if ((bool)e.NewValue)
{
// Set default value
HasNoTextProperty.SetValue(passwordBox, passwordBox.SecurePassword.Length == 0);
// Start listening out for password changes
passwordBox.PasswordChanged += PasswordBox_PasswordChanged;
}
}
/// <summary>
/// Fired when the password box password value changes
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void PasswordBox_PasswordChanged(object sender, RoutedEventArgs e)
{
// Set the attached HasText vaule
HasNoTextProperty.SetValue((PasswordBox)sender);
}