static void InitializeDragOperation(TreeViewItem itemToDrag)
{
// Set some flags used during the drag operation.
IsDragInProgress = true;
canInitiateDrag = false;
// Let the treeViewItem know that it is being dragged.
TreeViewItemDragState.SetIsBeingDragged(SelectedTreeViewItem, true);
}
static void FinishDragOperation(TreeViewItem draggedItem, AdornerLayer adornerLayer)
{
// Let the treeViewItem know that it is not being dragged anymore.
TreeViewItemDragState.SetIsBeingDragged(SelectedTreeViewItem, false);
IsDragInProgress = false;
if (ItemUnderDragCursor != null)
{
ItemUnderDragCursor = null;
}
// Remove the drag adorner from the adorner layer.
if (adornerLayer != null)
{
adornerLayer.Remove(dragAdorner);
dragAdorner = null;
}
}