title: Where do I get a thread-safe CollectionView?
body: <p>When updating a collection of business objects on a background thread I get this error message:</p>
  
  <blockquote>
    <p>This type of CollectionView does not support changes to its SourceCollection from a thread different from the Dispatcher thread.</p>
  </blockquote>
  
  <p>Ok, that makes sense. But it also begs the question, what version of CollectionView does support multiple threads and how do I make my objects use it?</p>