title: Update UI Label when using Task.Factory.StartNew
body: <p>I am trying to make my UI more responsive in my WPF app.  I spawn a new thread using </p>
  
  <pre><code>Task.Factory.StartNew( () =&gt; RecurseAndDeleteStart() );
  </code></pre>
  
  <p>In that method <code>RecurseAndDeleteStart()</code> I want to update a label in the UI with the file that is being deleted.</p>
  
  <p>How does one accomplish this?</p>