title: passing a string to a User Control
body: <p>I'm approaching to Metro App world in this days, please be gentle. 
  Here's the problem: </p>
  
  <p>a page receives a string from another page </p>
  
  <pre><code>protected override void OnNavigatedTo(NavigationEventArgs e)
  {
      Title.Text = e.Parameter.ToString();
  }
  </code></pre>
  
  <p>and I need to pass this string to an User Control of the receiving page.</p>
  
  <p>How can I pass a parameter from a page to an UserControl of another page?</p>