The original is on archive.org.
I found this article that shows the order of events by HttpModule and Page. I am going to be using it as a reminder.
You can find the entire post here http://forums.asp.net/t/1191194.aspx
BeginRequest – HttpModule
AuthenticateRequest – HttpModule
PostAuthenticateRequest – HttpModule
PostAuthorizeRequest – HttpModule
ResolveRequestCache – HttpModule
PostResolveRequestCache – HttpModule
PostMapRequestHandler – HttpModule
AcquireRequestState – HttpModule
PostAcquireRequestState – HttpModule
PreRequestHandlerExecute – HttpModule
PreInit – Page
Init – ChildUserControl
Init – UserControl
Init – MasterPage
Init – Page
InitComplete – Page
LoadPageStateFromPersistenceMedium – Page
ProcessPostData (first try) – Page
PreLoad – Page
Load – Page
Load – MasterPage
Load – UserControl
Load – ChildUserControl
ProcessPostData (second try) – Page
RaiseChangedEvents – Page
RaisePostBackEvent – Page
Click – Button – ChildUserControl
DataBinding – Page
DataBinding – MasterPage
DataBinding – UserControl
DataBinding – ChildUserControl
LoadComplete – Page
PreRender – Page
PreRender – MasterPage
PreRender – UserControl
PreRender – ChildUserControl
PreRenderComplete – Page
SaveViewState – Page
SavePageStateToPersistenceMedium – Page
SaveStateComplete – Page
Unload – ChildUserControl
Unload – UserControl
Unload – MasterPage
Unload – Page
PostRequestHandlerExecute – HttpModule
ReleaseRequestState – HttpModule
PostReleaseRequestState – HttpModule
UpdateRequestCache – HttpModule
PostUpdateRequestCache – HttpModule
EndRequest – HttpModule
PreSendRequestHeaders – HttpModule
PreSendRequestContent – HttpModule