title: xaml - Create Resources with UI
body: <p>normally if i create a template for an ListView Item or something else, I'm not able to see the result until i start my application and fill the List with Items.</p>
  
  <p>Something like that:</p>
  
  <pre><code>&lt;ListView ItemsSource="{Binding}"&gt;
      &lt;ListView.ItemTemplate&gt;
          &lt;DataTemplate&gt;
              &lt;Button&gt;Complex DataTemplate&lt;/Button&gt;
          &lt;/DataTemplate&gt;
      &lt;/ListView.ItemTemplate&gt;
  &lt;/ListView&gt;
  </code></pre>
  
  <p>Well i want to see a preview of my ItemTemplate while I create it, but I do not know how...</p>