ASP.NET处理请求过程

看一下HttpApplication的事件次序

BeginRequest
AuthenticateRequest
AuthorizeRequest
ResolveRequestCache
----Page类(或其他HttpHandler)的对象在此生成
AcquireRequestState
PreRequestHandlerExecute
----Page类(或其他HttpHandler)的对象的ProcessRequest
PostRequestHandlerExecute
ReleaseRequestState
UpdateRequestCache
EndRequest

http://www.west-wind.com/presentations/howaspnetworks/howaspnetworks.asp