title: WPF - Show popup over its parent element
body: <p>I have a Popup element inside a Grid element which is shorter than the Popup (the Popup is larger than the Grid). When the Popup is open, it is showing cut by the Grid's limits.</p>
  
  <p>Tried to set the ChildTransitions:</p>
  
  <pre><code>&lt;Popup.ChildTransitions&gt;
      &lt;TransitionCollection&gt;
          &lt;PopupThemeTransition /&gt;
      &lt;/TransitionCollection&gt;
  &lt;/Popup.ChildTransitions&gt;
  </code></pre>
  
  <p>And the Popup can be entirely shown meanwhile the transition effect, but then it's cut again. I really need the Popup inside the Grid, it's for a custom UserControl.</p>
  
  <p>Can the Popup be seen over its parent element in any way? It's for a Windows Store App project.</p>
  
  <p>Thank you!</p>