private static void RemovePreviewAdorner()
{
if (_overlayElement != null)
{
AdornerLayer.GetAdornerLayer(CurrentDropTargetAdvisor.GetTargetTopContainer()).Remove(_overlayElement);
_overlayElement = null;
}
}
private static void CreatePreviewAdorner(UIElement adornedElt, IDataObject data)
{
if (_overlayElement != null)
{
return;
}
AdornerLayer layer = AdornerLayer.GetAdornerLayer(CurrentDropTargetAdvisor.GetTargetTopContainer());
UIElement feedbackUI = CurrentDropTargetAdvisor.GetVisualFeedback(data);
_overlayElement = new DropPreviewAdorner(feedbackUI, adornedElt);
PositionAdorner();
layer.Add(_overlayElement);
}
