ASP.NET.in.a.Nutshell.Second.Edition [Electronic resources] نسخه متنی

You can use this interface to create custom HttpModules. HttpModules
are added through the <httpmodules> section
of the web.config file. Some HttpModules that
are available to you include
FormsAuthenticationModule,
PassportAuthenticationModule, and other security
modules in the System.Web.Security namespace.

HttpModules are often used for security or logging because they can
participate in the processing of every request into an application.
HttpModules work by reacting to ASP.NET events. For example, if you
want an HttpModule to participate in every web request, you could
react to the HttpApplication.BeginRequest event.
You can also specify that a HttpModule process other files (for
example, JPEG and BMP) rather than just ASP.NET file types by
updating the Application Extension Mapping to use
aspnet_ISAPI.dll to manage the appropriate
extension.

public interface 
IHttpModule  {
// Public Instance Methods
public void 
Dispose ( );
public void 
Init (HttpApplication 
context );
}

Implemented By

System.Web.Mobile.ErrorHandlerModule,
System.Web.Security.{DefaultAuthenticationModule,
FileAuthorizationModule,
FormsAuthenticationModule,
PassportAuthenticationModule,
UrlAuthorizationModule,
WindowsAuthenticationModule},
System.Web.SessionState.SessionStateModule

Returned By

HttpModuleCollection.{Get( ),
this}