private void RemoveInsertionAdorner()
{
if (this.insertionAdorner == null)
return;
this.insertionAdorner.Detach();
this.insertionAdorner = (InsertionAdorner) null;
}
private void CreateInsertionAdorner()
{
if (this.targetItemContainer == null)
return;
this.insertionAdorner = new InsertionAdorner(this.hasVerticalOrientation, this.isInFirstHalf, (UIElement) this.targetItemContainer, AdornerLayer.GetAdornerLayer((Visual) this.targetItemContainer));
}