private void AssociatedObjectOnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
_cursor = CursorHelper.ConvertToCursor(AssociatedObject, e.GetPosition(AssociatedObject));
AssociatedObject.Visibility = Visibility.Hidden;
DragDrop.DoDragDrop(AssociatedObject, AssociatedObject.DataContext, DragDropEffects.Move);
AssociatedObject.Visibility = Visibility.Visible;
_cursor = null;
}