title: Hide Application Bar Icon Programmatically in a WP7 Silverlight Application?
body: <p>I have a Windows Phone 7 application built in Silverlight. This application makes use of the application bar. If the has purchased the application, I want to hide one of the buttons in the application bar. However, I've noticed that the ApplicationIconButton class does not expose a "Visibility" property. At the same time, I did not see a way to dynamically populate the application bar at runtime. </p>
  
  <p>Can anybody provide some insight into this? Is this possible? If so, how?</p>
  
  <p>Thanks!</p>