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Links of HttpApplication Class from docs.microsoft.com HttpApplication Class Remarks Constructors Properties Methods Events Explicit Interface Implementations Applies to See also
Links of HttpApplication Class from docs.microsoft.com
Source/Reference:
https://docs.microsoft.com/en-us/dotnet/api/system.web.httpapplication?view=netframework-4.8
HttpApplication Class
Defines the methods, properties, and events that are common to all application objects in an ASP.NET application. This class is the base class for applications that are defined by the user in the Global.asax file.
public class HttpApplication :
IDisposable, System.ComponentModel.IComponent, System.Web.IHttpAsyncHandler
Inheritance Object --> HttpApplication
Implements: IComponent IDisposable IHttpAsyncHandler IHttpHandler
Remarks
Instances of the HttpApplication class are created in the ASP.NET infrastructure, not by the user directly. One instance of the HttpApplication class is used to process many requests in its lifetime. However, it can process only one request at a time. Thus, member variables can be used to store per-request data.
An application raises events that can be handled by custom modules that implement the IHttpModule interface or by event handler code that is defined in the Global.asax file. Custom modules that implement the IHttpModule interface can be put in the App_Code folder or in a DLL in the Bin folder.
HttpApplication is introduced in the .NET Framework version 3.5. For more information, see Versions and Dependencies .
Note: When running IIS 7.0 in Integrated mode, custom modules in the App_Code folder or Bin folder apply to all requests in the request pipeline. Event handler code in the Global.asax file only applies to requests that are mapped to an ASP.NET handler.
The application events are raised in the following order:
BeginRequest
AuthenticateRequest
PostAuthenticateRequest
AuthorizeRequest
PostAuthorizeRequest
ResolveRequestCache
PostResolveRequestCache
After the PostResolveRequestCache event and before the PostMapRequestHandler event, an event handler (which is a page that corresponds to the request URL) is created. When a server is running IIS 7.0 in Integrated mode and at least the .NET Framework version 3.0, the MapRequestHandler event is raised. When a server is running IIS 7.0 in Classic mode or an earlier version of IIS, this event cannot be handled.
PostMapRequestHandler
AcquireRequestState
PostAcquireRequestState
PreRequestHandlerExecute
The event handler is executed.
PostRequestHandlerExecute
ReleaseRequestState
PostReleaseRequestState
After the PostReleaseRequestState event is raised, any existing response filters will filter the output.
UpdateRequestCache
PostUpdateRequestCache
LogRequest .
This event is supported in IIS 7.0 Integrated mode and at least the .NET Framework 3.0
PostLogRequest
This event is supported IIS 7.0 Integrated mode and at least the .NET Framework 3.0
EndRequest
Constructors
Properties
Methods
AddOnAcquireRequestStateAsync(BeginEventHandler, EndEventHandler) :
AcquireRequestState AcquireRequestState
AddOnAcquireRequestStateAsync(BeginEventHandler, EndEventHandler, Object) : AcquireRequestState AcquireRequestState
AddOnAuthenticateRequestAsync(BeginEventHandler, EndEventHandler) : AuthenticateRequest AuthenticateRequest
AddOnAuthenticateRequestAsync(BeginEventHandler, EndEventHandler, Object) : AuthenticateRequest AuthenticateRequest
AddOnAuthorizeRequestAsync(BeginEventHandler, EndEventHandler) : AuthorizeRequest AuthorizeRequest
AddOnAuthorizeRequestAsync(BeginEventHandler, EndEventHandler, Object) : AuthorizeRequest AuthorizeRequest
AddOnBeginRequestAsync(BeginEventHandler, EndEventHandler) : BeginRequest BeginRequest
AddOnBeginRequestAsync(BeginEventHandler, EndEventHandler, Object) : BeginRequest BeginRequest
AddOnEndRequestAsync(BeginEventHandler, EndEventHandler) : EndRequest EndRequest
AddOnEndRequestAsync(BeginEventHandler, EndEventHandler, Object) : EndRequest EndRequest
AddOnLogRequestAsync(BeginEventHandler, EndEventHandler) : LogRequest LogRequest
AddOnLogRequestAsync(BeginEventHandler, EndEventHandler, Object) : LogRequest LogRequest
AddOnMapRequestHandlerAsync(BeginEventHandler, EndEventHandler) : MapRequestHandler MapRequestHandler
AddOnMapRequestHandlerAsync(BeginEventHandler, EndEventHandler, Object) :
MapRequestHandler MapRequestHandler
AddOnPostAcquireRequestStateAsync(BeginEventHandler, EndEventHandler) :
PostAcquireRequestState PostAcquireRequestState
AddOnPostAcquireRequestStateAsync(BeginEventHandler, EndEventHandler, Object) : PostAcquireRequestState PostAcquireRequestState
AddOnPostAuthenticateRequestAsync(BeginEventHandler, EndEventHandler) : PostAuthenticateRequest PostAuthenticateRequest
AddOnPostAuthenticateRequestAsync(BeginEventHandler, EndEventHandler, Object) : PostAuthorizeRequest PostAuthorizeRequest
AddOnPostAuthorizeRequestAsync(BeginEventHandler, EndEventHandler) : PostAuthorizeRequest PostAuthorizeRequest
AddOnPostAuthorizeRequestAsync(BeginEventHandler, EndEventHandler, Object) : PostAuthorizeRequest PostAuthorizeRequest
AddOnPostLogRequestAsync(BeginEventHandler, EndEventHandler) : PostLogRequest PostLogRequest
AddOnPostLogRequestAsync(BeginEventHandler, EndEventHandler, Object) : PostLogRequest PostLogRequest
AddOnPostMapRequestHandlerAsync(BeginEventHandler, EndEventHandler) : PostMapRequestHandler PostMapRequestHandler
AddOnPostMapRequestHandlerAsync(BeginEventHandler, EndEventHandler, Object) : PostMapRequestHandler PostMapRequestHandler
AddOnPostReleaseRequestStateAsync(BeginEventHandler, EndEventHandler) : PostReleaseRequestState PostReleaseRequestState
AddOnPostReleaseRequestStateAsync(BeginEventHandler, EndEventHandler, Object) : PostReleaseRequestState PostReleaseRequestState
AddOnPostRequestHandlerExecuteAsync(BeginEventHandler, EndEventHandler) : PostRequestHandlerExecute PostRequestHandlerExecute
AddOnPostRequestHandlerExecuteAsync(BeginEventHandler, EndEventHandler, Object) : PostRequestHandlerExecute PostRequestHandlerExecute
AddOnPostResolveRequestCacheAsync(BeginEventHandler, EndEventHandler) : PostResolveRequestCache PostResolveRequestCache
AddOnPostResolveRequestCacheAsync(BeginEventHandler, EndEventHandler, Object) : PostResolveRequestCache PostResolveRequestCache
AddOnPostUpdateRequestCacheAsync(BeginEventHandler, EndEventHandler) : PostUpdateRequestCache PostUpdateRequestCache
AddOnPostUpdateRequestCacheAsync(BeginEventHandler, EndEventHandler, Object) : PostUpdateRequestCache event to the collection of asynchronous PostUpdateRequestCache event handlers for the current request.
AddOnPreRequestHandlerExecuteAsync(BeginEventHandler, EndEventHandler) : PreRequestHandlerExecute event to the collection of asynchronous PreRequestHandlerExecute event handlers for the current request.
AddOnPreRequestHandlerExecuteAsync(BeginEventHandler, EndEventHandler, Object) : PreRequestHandlerExecute PreRequestHandlerExecute
AddOnReleaseRequestStateAsync(BeginEventHandler, EndEventHandler) : ReleaseRequestState ReleaseRequestState
AddOnReleaseRequestStateAsync(BeginEventHandler, EndEventHandler, Object) : ReleaseRequestState ReleaseRequestState
AddOnResolveRequestCacheAsync(BeginEventHandler, EndEventHandler) : ResolveRequestCache ResolveRequestCache
AddOnResolveRequestCacheAsync(BeginEventHandler, EndEventHandler, Object) : ResolveRequestCache ResolveRequestCache
AddOnUpdateRequestCacheAsync(BeginEventHandler, EndEventHandler) : UpdateRequestCache UpdateRequestCache
AddOnUpdateRequestCacheAsync(BeginEventHandler, EndEventHandler, Object) :
UpdateRequestCache UpdateRequestCache
CompleteRequest() :
EndRequest
Dispose() :
HttpApplication
Equals(Object) :
Object
GetHashCode() :
Object
GetOutputCacheProviderName(HttpContext) :
GetType() : Type Object
GetVaryByCustomString(HttpContext, String) :
VaryByCustom
Init() :
MemberwiseClone() : Object Object
OnExecuteRequestStep(Action<HttpContextBase,Action>) :
RegisterModule(Type) :
ToString() : Object
Events
Explicit Interface Implementations
Applies to
.NET Framework: 4.8 4.7.2 4.7.1 4.7 4.6.2 4.6.1 4.6 4.5.2 4.5.1 4.5 4.0 3.5 3.0 2.0 1.1
See also
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ID: 190600005 Last Updated: 6/5/2019 Revision: 0 Ref:
References
Active Server Pages, , http://msdn.microsoft.com/en-us/library/aa286483.aspx
ASP Overview, , http://msdn.microsoft.com/en-us/library/ms524929%28v=vs.90%29.aspx
ASP Best Practices, , http://technet.microsoft.com/en-us/library/cc939157.aspx
ASP Built-in Objects, , http://msdn.microsoft.com/en-us/library/ie/ms524716(v=vs.90).aspx
Response Object, , http://msdn.microsoft.com/en-us/library/ms525405(v=vs.90).aspx
Request Object, , http://msdn.microsoft.com/en-us/library/ms524948(v=vs.90).aspx
Server Object (IIS), , http://msdn.microsoft.com/en-us/library/ms525541(v=vs.90).aspx
Application Object (IIS), , http://msdn.microsoft.com/en-us/library/ms525360(v=vs.90).aspx
Session Object (IIS), , http://msdn.microsoft.com/en-us/library/ms524319(8v=vs.90).aspx
ASPError Object, , http://msdn.microsoft.com/en-us/library/ms524942(v=vs.90).aspx
ObjectContext Object (IIS), , http://msdn.microsoft.com/en-us/library/ms525667(v=vs.90).aspx
Debugging Global.asa Files, , http://msdn.microsoft.com/en-us/library/aa291249(v=vs.71).aspx
How to: Debug Global.asa files, , http://msdn.microsoft.com/en-us/library/ms241868(v=vs.80).aspx
Calling COM Components from ASP Pages, , http://msdn.microsoft.com/en-us/library/ms524620(v=VS.90).aspx
IIS ASP Scripting Reference, , http://msdn.microsoft.com/en-us/library/ms524664(v=vs.90).aspx
ASP Keywords, , http://msdn.microsoft.com/en-us/library/ms524672(v=vs.90).aspx
Creating Simple ASP Pages, , http://msdn.microsoft.com/en-us/library/ms524741(v=vs.90).aspx
Including Files in ASP Applications, , http://msdn.microsoft.com/en-us/library/ms524876(v=vs.90).aspx
ASP Overview, , http://msdn.microsoft.com/en-us/library/ms524929(v=vs.90).aspx
FileSystemObject Object, , http://msdn.microsoft.com/en-us/library/z9ty6h50(v=vs.84).aspx
http://msdn.microsoft.com/en-us/library/windows/desktop/ms675944(v=vs.85).aspx, , ADO Object Model
ADO Fundamentals, , http://msdn.microsoft.com/en-us/library/windows/desktop/ms680928(v=vs.85).aspx