Detecting a control's focus in Silverlight

Question

Is there any way to tell whether a control (specifically a System.Windows.Controls.TextBox) is focused in Silverlight? I\'m looking for something like the following (what you wo

Answer 1

You have to use FocusManager

bool b = FocusManager.GetFocusedElement() == textBox;

Answer 2

As soon as you have a control consisting of more than one input element (which needs to have focus for handling user input) asking the FocusManager won't do the trick anymore. Try this:

private bool HasFocus { get; set; }

protected override void OnGotFocus( RoutedEventArgs e )
{
    base.OnGotFocus( e );
    HasFocus = true;
}

protected override void OnLostFocus( RoutedEventArgs e )
{
    base.OnLostFocus( e );
    HasFocus = false;
}