SMPL: Drag-n-drop from ThumbnailList to BitmapViewer

public Form1()
{
	InitializeComponent();

	_bv = new Aurigma.GraphicsMill.WinControls.BitmapViewer();
	... skipped ...
	_bv.AllowDrop = true;
	_bv.DragEnter += new DragEventHandler(BitmapViewerDragEnter);
	_bv.DragDrop += new DragEventHandler(BitmapViewerDragDrop);

	_tl = new Aurigma.GraphicsMill.WinControls.ThumbnailListView();
           ... skipped ...
	_tl.ItemDrag += new Aurigma.GraphicsMill.WinControls.ItemDragEventHandler(ThumbnailListItemDrag);
}

void ThumbnailListItemDrag(object sender, Aurigma.GraphicsMill.WinControls.ItemDragEventArgs e)
{
	if (e.MouseButton == MouseButtons.Left)
	{
		Aurigma.GraphicsMill.WinControls.ThumbnailListItem item = 
			(Aurigma.GraphicsMill.WinControls.ThumbnailListItem)e.Item;
		DoDragDrop(new DragDropData(item.Pidl), DragDropEffects.Move);
	}
}


void BitmapViewerDragEnter(object sender, DragEventArgs e)
{
	if (e.Data.GetData(typeof(DragDropData)) != null)
		e.Effect = DragDropEffects.Move;
	else
		e.Effect = DragDropEffects.None;
}


void BitmapViewerDragDrop(object sender, DragEventArgs e)
{
	DragDropData myData = (DragDropData)e.Data.GetData(typeof(DragDropData));
	if (myData != null)
	{
		System.IO.Stream stream = myData.Pidl.Stream;
		_bv.Bitmap.Load(stream);
		stream.Close();
	}
}