title: No "SelectionChanged" option for DatePicker
body: <p>So I am attempting to make an app with UWP, but I've hit quite a huge issue. I would like the app to do something for me when I change the date on my DatePicker. Whenever I double click on one of the Textboxes/listviews I've added on MainPage file, it creates the "SelectionChanged" function for it. </p>
  
  <p>So my question is, how come it does not do the same for the DatePicker/what is the appropriate thing to put within the DatePicker tag to have a function like that? I have tried Googling around and found that there is something called "SelectedDateChanged" but even when I attempt to add it manually it doesn't show up on the list.</p>
  
  <p>This is the DatePicker XAML code:</p>
  
  <pre><code>&lt;DatePicker Name="dt1" HorizontalAlignment="Left" Margin="36,130,0,0" VerticalAlignment="Top" /&gt;
  </code></pre>