关闭上级控件

         private void Close_Click(object sender, RoutedEventArgs e)
        {
            FrameworkElement parent = (FrameworkElement)((FrameworkElement)sender).Parent;
            parent = (FrameworkElement)parent.Parent;
            parent = (FrameworkElement)parent.Parent;
            IPopupBox box = (IPopupBox)parent.Parent;
            box.Close();
        }