// Stop dragging over other element.
private void OnItemDragLeave(ItemViewModel item)
{
Debug.WriteLine($"OnItemDragLeave: {item?.Title}");
Items.ForEach(i => i.IsBeingDraggedOver = false);
}
// Start dragging.
private void OnItemDragged(ItemViewModel item)
{
Debug.WriteLine($"OnItemDragged: {item?.Title}");
Items.ForEach(i => i.IsBeingDragged = item == i);
}