how page initialization functions asp.net ajax?

quick question:

there seem array uncanny things wanted, hooking adult page-load form events. here specific questions:

1. i know auto-hooked-up pageload function. there any others it?


2. where i offshoot adult events those from, e.g., sys.application.add_init sys.webforms.pagerequestmanager.getinstance().addpageloading?


3. what's inadequacy between initial twin those pageload, any?


4. rather importantly, "correct" proceed certain asp.net ajax files hallowed before start hooking adult eventuality handlers, guess page, etc.? tide proceed auto-hooked-up pageload offshoot adult rest, nonetheless seems kind hacky.

thanks!