/// <summary>
/// An event reporting that the IsKeyboardFocusWithin property changed.
/// </summary>
protected override void OnIsKeyboardFocusWithinChanged(DependencyPropertyChangedEventArgs e)
{
DataGrid owner = DataGridOwner;
if (owner != null)
{
owner.CellIsKeyboardFocusWithinChanged(this, (bool)e.NewValue);
}
}