title: Best way to call back/noftify parent page of an event?
body: <p>In a Silverlight 3.0 app, there is a shell page that serves as the navigation piece for a number of child controls and other Silverlight pages.  The Silverlight pages are included in the shell page via the Frame object ().  The pages are rotated dynamically via the code-behind file, so there isn't a direct reference to them in the xaml.</p>
  
  <p>How can these dynamically included pages call back to the shell page?  We are currently using events to communicate from the included user controls, but these are known events that we can subscribe to in xaml...so if suggesting events, please include concrete examples.</p>
  
  <p>TIA.</p>