private void RemoveFolderMoveAdorner()
{
if (this.folderMoveAdorner != null)
{
this.folderMoveAdorner.Detach();
this.folderMoveAdorner = null;
this.adornedItem = null;
}
}
private void ShowFolderMoveAdorner(TreeViewItem item)
{
if (item != this.adornedItem)
{
this.RemoveFolderMoveAdorner();
}
if (this.folderMoveAdorner == null)
{
Border borderChild = UIUtilities.FindDescendant <Border>(item, border => border.Name == "Bd");
var adornerLayer = AdornerLayer.GetAdornerLayer(borderChild);
this.folderMoveAdorner = new MoveToFolderAdorner(borderChild, adornerLayer);
this.adornedItem = item;
}
}
