void PrepareForSegue(DetailViewController detailViewController)
        {
            NSIndexPath selectedIndexPath = CollectionView.GetIndexPathsForSelectedItems() [0];

            detailViewController.ImageIdentifier = DataSource.GetIdentifier(selectedIndexPath);
            detailViewController.DataSource      = DataSource;
        }
		void PrepareForSegue (DetailViewController detailViewController)
		{
			NSIndexPath selectedIndexPath = CollectionView.GetIndexPathsForSelectedItems () [0];

			detailViewController.ImageIdentifier = DataSource.GetIdentifier (selectedIndexPath);
			detailViewController.DataSource = DataSource;
		}