private void FindOwner()
{
FrameworkElement frameworkElement = this;
StartView owner;
do
{
frameworkElement = (FrameworkElement)VisualTreeHelper.GetParent(frameworkElement);
owner = frameworkElement as StartView;
}while (frameworkElement != null && owner == null);
Owner = owner;
}
private void OnUnloaded(object sender, RoutedEventArgs e)
{
_owner = null;
}