title: Silverlight DataGridRows in a DataGrid - how do I hide them selectively?
body: <p>I have an ObservableCollection feeding a DataGrid thats updating nicely.</p>
  
  <p>The point: I want to filter (collapse) the rows without removing them from the collection.</p>
  
  <p>Is there a way to do this, or place a view on the Grid like normal .Net?</p>