понедельник, 31 октября 2011 г.

Global.asax Events


HttpApplication Events:
Application_AcquireRequestStateOccurs when ASP.NET acquires the current state (for example, session state) that is associated with the current request. 
Application_AuthenticateRequestOccurs when a security module has established the identity of the user. 
Application_AuthorizeRequest
Occurs when a security module has verified user authorization. 
Application_BeginRequest
Occurs as the first event in the HTTP pipeline chain of execution when ASP.NET responds to a request. 
Application_Disposed
Adds an event handler to listen to the Disposed event on the application. 
Application_EndRequest
Occurs as the last event in the HTTP pipeline chain of execution when ASP.NET responds to a request. 
Application_Error
Occurs when an unhandled exception is thrown. 
Application_PostAcquireRequestState
Occurs when the request state (for example, session state) that is associated with the current request has been obtained. 
Application_PostAuthenticateRequest
Occurs when a security module has established the identity of the user. 
Application_PostAuthorizeRequest
Occurs when the user for the current request has been authorized. 
Application_PostMapRequestHandler
Occurs when ASP.NET has mapped the current request to the appropriate event handler. 
Application_PostReleaseRequestState
Occurs when ASP.NET has completed executing all request event handlers and the request state data has been stored. 
Application_PostRequestHandlerExecute
Occurs when the ASP.NET event handler (for example, a page or an XML Web service) finishes execution. 
Application_PostResolveRequestCache
Occurs when ASP.NET bypasses execution of the current event handler and allows a caching module to serve a request from the cache. 
Application_PostUpdateRequestCacheOccurs when ASP.NET completes updating caching modules and storing responses that are used to serve subsequent requests from the cache. 
Application_PreRequestHandlerExecuteOccurs just before ASP.NET begins executing an event handler (for example, a page or an XML Web service). 
Application_PreSendRequestContentOccurs just before ASP.NET sends content to the client. 
Application_PreSendRequestHeaders
Occurs just before ASP.NET sends HTTP headers to the client. 
Application_ReleaseRequestState
Occurs after ASP.NET finishes executing all request event handlers. This event causes state modules to save the current state data. 
Application_ResolveRequestCache
Occurs when ASP.NET completes 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). 
Application_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. 
Application_Init
This method occurs after _start and is used for initializing code.

Application_Start
As with traditional ASP, used to set up an application environment and only called when the application first starts.
Application_End
Again, like classic ASP, used to clean up variables and memory when an application ends.
Session Events:
Session_Start
As with classic ASP, this event is triggered when any new user accesses the web site.
Session_End
As with classic ASP, this event is triggered when a user's session times out or ends. Note this can be 20 mins (the default session timeout value) after the user actually leaves the site.
Profile Events:
Profile_MigrateAnonymous
Occurs when the anonymous user for a profile logs in.
Passport Events:
PassportAuthentication_OnAuthenticate
Raised during authentication. This is a Global.asax event that must be named PassportAuthentication_OnAuthenticate.
 
Possibly more events defined in other HttpModules like:
System.Web.Caching.OutputCacheModule
System.Web.SessionState.SessionStateModule
System.Web.Security.WindowsAuthentication
System.Web.Security.FormsAuthenticationModule
System.Web.Security.PassportAuthenticationModule
System.Web.Security.UrlAuthorizationModule
System.Web.Security.FileAuthorizationModule
System.Web.Profile.ProfileModule

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