title: Why a Custom Dependency Property is not Showing in User Control's intellisense?
body: <p>I created a User Control and in code behind, I added the following DP. When I switch to XAML and try to type the name of the property next to the UserControl tag, for example "Test", it doesn't show up. I wonder what could be missing here.</p>
  
  <pre><code>    public static readonly DependencyProperty TestProperty =
          DependencyProperty.Register("Test", typeof(String), typeof(UserControl1));
  </code></pre>