Drag and drop between 2 listboxes, COMException

Hi,

This problem occurs every now and then when I drag one element from ListBox to the other listbox. "Error HRESULT E_FAIL has been returned from a call to a COM component." COMException is thrown when I call "DragDrop.DoDragDrop". The code below shows how and where exactly I call DoDragDrop.

object[] parameters = { source, data };
Dispatcher.CurrentDispatcher.BeginInvoke(
new Action(() => DoDragDrop(parameters))
, System.Windows.Threading.DispatcherPriority.Background, null);


where DoDragDrop(parameters) is:

public static void DoDragDrop(params object[] list)
{
//try
//{
DragDrop.DoDragDrop(list[0] as DependencyObject, list[1], DragDropEffects.Move);
//}
//catch
//{
//}
}

I've read about similar problems being resolved by doing the drag and drop asynchronously hence the Dispatcher call. Still the problem persists. Catching all the exceptions helps - it works properly from what I can notice - which suggests that the exception doesn't break the drag and drop operation. I would prefer to know and eliminate the cause. I'd appreciate any help.

Best regards,

Simon