title: How to correctly resize scrollbar when underlying collection of a WPF ListView changes?
body: <p>How to correctly resize scrollbar when underlying collection of a WPF ListView changes?</p>
  
  <p>I have a WPF ListView bound to an observeable collection with several thousand items.  When a large number of these are removed the view seems to only show the last item.  When I move the position in the view with the thumbbar, the thumbbar resizes to reflect the new collection size.  Is it possible to force the ListView and Scroll bar to synchronise when the collection changes?</p>