title: Why are SelectedItems missing in IntelliSense on ListBox?
body: <p>Am I missing something here?
  I can't find the <code>SelectedItems</code> property on <code>ListBox</code> control. I'm trying to loop through the selected items in it. And yes, property <code>SelectionMode</code> is set to multiple, not that it matters.</p>
  
  <p>Why can't I 'see' the property?</p>