private void AssociatedObject_Loaded(object sender, RoutedEventArgs e)
{
if (!(sender is Panel panel))
{
return;
}
if (panel.Background == null)
{
panel.Background = Brushes.Transparent;
}
panel.AllowDrop = true;
panel.DragEnter += new DragEventHandler(AssociateObject_DragEnter);
panel.DragOver += new DragEventHandler(AssociatedObject_DragOver);
DragManager.RegisterDragContext(panel, AssociatedObject_DropCompleted);
}
