IHttpHandler Interface (System.Web)

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Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

IHttpHandler Interface

Updated: November 2007

Defines the contract that ASP.NET implements to synchronously process HTTP Web requests using custom HTTP handlers.

Namespace: System.Web
Assembly: System.Web (in System.Web.dll)

Syntax

Visual Basic (Declaration)

<AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level := AspNetHostingPermissionLevel.Minimal)> _
<AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level := AspNetHostingPermissionLevel.Minimal)> _
Public Interface IHttpHandler

Visual Basic (Usage)

Dim instance As IHttpHandler

[AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public interface IHttpHandler

Visual C++

[AspNetHostingPermissionAttribute(SecurityAction::InheritanceDemand, Level = AspNetHostingPermissionLevel::Minimal)]
[AspNetHostingPermissionAttribute(SecurityAction::LinkDemand, Level = AspNetHostingPermissionLevel::Minimal)]
public interface class IHttpHandler

/** @attribute AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal) */
/** @attribute AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal) */
public interface IHttpHandler

JScript

public interface IHttpHandler

Remarks

You can write custom HTTP handlers to process specific, predefined types of HTTP requests in any Common Language Specification (CLS) compliant language. Executable code defined in the HttpHandler classes, rather than conventional ASP or ASP.NET Web pages, responds to these specific requests. HTTP handlers give you a means of interacting with the low-level request and response services of the IIS Web server and provide functionality much like ISAPI extensions but with a simpler programming model.

If your handler will access session state values, it must implement the IRequiresSessionState interface (a marker interface with no methods).

Topic	Location
How to: Configure an HTTP Handler Extension in IIS	Building ASP .NET Web Applications in Visual Studio
How to: Register HTTP Handlers	Building ASP .NET Web Applications in Visual Studio
HTTP Handlers and HTTP Modules Overview	Building ASP .NET Web Applications in Visual Studio
Walkthrough: Creating a Synchronous HTTP Handler	Building Applications with Visual Web Developer
Walkthrough: Creating an Asynchronous HTTP Handler	Building ASP .NET Web Applications in Visual Studio
Walkthrough: Creating and Registering HTTP Handler Factories	Building ASP .NET Web Applications in Visual Studio

Platforms

Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

Reference

IHttpHandler Members

System.Web Namespace

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