| Name | Description | |
|---|---|---|
| AcquireRequestState | Occurs when ASP.NET acquires the current state (for example, session state) that is associated with the current request. | |
| AuthenticateRequest | Occurs when a security module has established the identity of the user. | |
| AuthorizeRequest | Occurs when a security module has verified user authorization. | |
| BeginRequest | Occurs as the first event in the HTTP pipeline chain of execution when ASP.NET responds to a request. | |
| Disposed | Occurs when the application is disposed. | |
| EndRequest | Occurs as the last event in the HTTP pipeline chain of execution when ASP.NET responds to a request. | |
| Error | Occurs when an unhandled exception is thrown. | |
| LogRequest | Occurs just before ASP.NET performs any logging for the current request. | |
| MapRequestHandler | Infrastructure. Occurs when the handler is selected to respond to the request. | |
| PostAcquireRequestState | Occurs when the request state (for example, session state) that is associated with the current request has been obtained. | |
| PostAuthenticateRequest | Occurs when a security module has established the identity of the user. | |
| PostAuthorizeRequest | Occurs when the user for the current request has been authorized. | |
| PostLogRequest | Occurs when ASP.NET has completed processing all the event handlers for the LogRequest event. | |
| PostMapRequestHandler | Occurs when ASP.NET has mapped the current request to the appropriate event handler. | |
| PostReleaseRequestState | Occurs when ASP.NET has completed executing all request event handlers and the request state data has been stored. | |
| PostRequestHandlerExecute | Occurs when the ASP.NET event handler (for example, a page or an XML Web service) finishes execution. | |
| PostResolveRequestCache | Occurs when ASP.NET bypasses execution of the current event handler and allows a caching module to serve a request from the cache. | |
| PostUpdateRequestCache | Occurs when ASP.NET finishes updating caching modules and storing responses that are used to serve subsequent requests from the cache. | |
| PreRequestHandlerExecute | Occurs just before ASP.NET starts executing an event handler (for example, a page or an XML Web service). | |
| PreSendRequestContent | Occurs just before ASP.NET sends content to the client. | |
| PreSendRequestHeaders | Occurs just before ASP.NET sends HTTP headers to the client. | |
| ReleaseRequestState | Occurs after ASP.NET finishes executing all request event handlers. This event causes state modules to save the current state data. | |
| ResolveRequestCache | Occurs when ASP.NET finishes an authorization event to let the caching modules serve requests from the cache, bypassing execution of the event handler (for example, a page or an XML Web service). | |
| UpdateRequestCache | Occurs when ASP.NET finishes executing an event handler in order to let caching modules store responses that will be used to serve subsequent requests from the cache. |
http://msdn.microsoft.com/en-us/library/0dbhtdck(v=vs.100).aspx