/// <summary>
/// Updates the drag drop allowed properties.
/// </summary>
protected virtual void UpdateIsDragDropPossible()
{
CanonicSelection CanonicSelectedItemList = new CanonicSelection(CreateItemList());
if (GetCanonicSelectedItemList(CanonicSelectedItemList))
{
DragSource.SetIsDragPossible(CanonicSelectedItemList);
}
else
{
DragSource.ClearIsDragPossible();
DragSource.ClearFlatDraggedItemList();
}
}
