Accessing controls inside an updatepanel in onPreInit event

I have an update panel inside a user control that is initialized during the page's PreInit event. However, as soon as I put an updatepanel inside this user control I can no longer access the controls inside this updatepanel during the PreInit event. The controls are all just "null". Am I doing something wrong, or does the updatepanel somehow change my ability to access these controls?Thanks,Jon

Set a breakpoint in PreInit and step through the PageLifeCycle then you see in what Event the UpdatePanel get initialized.

I was just wondering why putting an updatepanel in would break my existing code? Shouldn't it get initialized at the same time as the other controls?
Please have a look at Wally'sPodcast about the clientside lifecycle. I think he's awnsering youre questions.