title: How to click button from code in UniversalApp?
body: <p><strong>Before downvote</strong>: let me remind that there is no method "btnDoSomething.Click();"</p>
  
  <p>xaml contents:</p>
  
  <pre><code>&lt;AppBarButton x:Name="btnDoSomething" Icon="Accept"/&gt;
  </code></pre>
  
  <p>I want to click it from "OnNavigatedTo" method. How to do this?</p>