private void InitializeDragAdorner(ItemsControl itemsControl, object dragData, Point startPosition)
{
if (this.DataTemplate != null)
{
if (_dragAdorner == null)
{
var adornerLayer = AdornerLayer.GetAdornerLayer(itemsControl);
_dragAdorner = new DragAdorner(dragData, DataTemplate, itemsControl, adornerLayer);
_dragAdorner.UpdatePosition(startPosition.X, startPosition.Y);
}
}
}
