title: In windows 8 metro style app, how to update live tile while app is not running?
body: <p>In windows 8 metro style app, how to update live tile while app is not running ?</p>
  
  <p>And the live tile start to run when OS system begin to start.</p>
  
  <p><a href="http://blogs.msdn.com/b/windowsappdev/archive/2012/04/16/creating-a-great-tile-experience-part-1.aspx" rel="nofollow">http://blogs.msdn.com/b/windowsappdev/archive/2012/04/16/creating-a-great-tile-experience-part-1.aspx</a></p>
  
  <p>"3.Use polling notifications from the cloud to update the tile while the app is not running"</p>
  
  <p>But I cannot find any example code.</p>
  
  <p>I also try MSDN's PushNotificationSample, But I don't know how to set the "Server URI"?</p>
  
  <p>Does anyone have similar experiences?</p>