Setting user control to listen for updates in underlying class library
<p>OK, so I have a user control which uses values from an underlying business logic class.  I need some way for the user control to listen to the class and fire when certain methods are called / values are updated on the BL class.</p>

<p>At a high level, what would be the best way to do this?  I know I'd need some form of event in the BL class with a listener in my user control but just wondering the best way to go about it if anyone has any suggestions??</p>
