User control event handling

Question

I have a page with a user control.  I have an event defined in the user control and my page is registering that event.  When the event is fired from the user control, it calls the method in the page.

The problem is that in the method, I am attempting to set a panel to visible = false.  As I mentioned, the event  is called but setting the visible property on the panel has no affect.  Just for the heck of it, I put a label on the page and updated the text and it doesnt update either.

Any suggestions?