title: no image, no text in App Bar for Windows Phone 8
body: <p>I'm working on Windows Phone project, and troubles have found me as usual :) The application bar I'm trying to create doesn't show the specified image and text. When I do it on code it simply doesn't work as planned:</p>
  
  <pre><code>private void BuildLocalizedApplicationBar()
          {
              ApplicationBar = new ApplicationBar();
              ApplicationBarIconButton specialAppBar = new ApplicationBarIconButton();
              specialAppBar.IconUri = new Uri("/Assets/special.png", UriKind.Relative);
              specialAppBar.Text = "special";
              ApplicationBar.Buttons.Add(specialAppBar);
          }
  </code></pre>
  
  <p>And when I do it in XAML, it is displaying perfect at design time only:</p>
  
  <pre><code>&lt;phone:PhoneApplicationPage.ApplicationBar&gt;
          &lt;shell:ApplicationBar IsVisible="True" IsMenuEnabled="True"&gt;
              &lt;shell:ApplicationBarIconButton IconUri="/Assets/special.png" Text="special"/&gt;
          &lt;/shell:ApplicationBar&gt;
      &lt;/phone:PhoneApplicationPage.ApplicationBar&gt;
  </code></pre>
  
  <p>I guess I'm missing smth important, but don't know what exactly. Will appreciate any help :) Thank you in advance</p>