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IHttpHandler.ProcessRequest Method

Enables processing of HTTP Web requests by a custom HttpHandler that implements the IHttpHandler interface.

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

'Declaration
Sub ProcessRequest ( _
	context As HttpContext _
)

Parameters

context
Type: System.Web.HttpContext

An HttpContext object that provides references to the intrinsic server objects (for example, Request, Response, Session, and Server) used to service HTTP requests.

Place your custom HttpHandler code in the ProcessRequest virtual method, as shown in the following example.

The following code example writes four lines of text to the HTTP output stream in response to a client request for a page named handler.aspx. All requests for handler.aspx are serviced by the MyHttpHandler class in the namespace HandlerExample contained in the assembly HandlerTest.dll.

' Name this Visual Basic file HandlerTest.vb and compile it with the 
' command line: vbc /target:library /r:System.Web.dll HandlerTest.vb. 
' Copy HandlerTest.dll to your \bin directory. 
Imports System.Web

Namespace HandlerExample

    Public Class MyHttpHandler
        Implements IHttpHandler

        ' Override the ProcessRequest method. 
        Public Sub ProcessRequest(context As HttpContext) _
        Implements IHttpHandler.ProcessRequest

            context.Response.Write("<H1>This is an HttpHandler Test.</H1>")
            context.Response.Write("<p>Your Browser:</p>")
            context.Response.Write("Type: " & context.Request.Browser.Type & "<br>")
            context.Response.Write("Version: " & context.Request.Browser.Version)
        End Sub 

        ' Override the IsReusable property.         
        Public ReadOnly Property IsReusable() As Boolean _
        Implements IHttpHandler.IsReusable

            Get 
                Return True 
            End Get 
        End Property 
    End Class 
End Namespace 

'______________________________________________________________ 

' To use this handler, include the following lines in a 
' Web.config file (be sure to remove the comment markers). 

'<configuration> 
'   <system.web> 
'      <httpHandlers> 
'         <add verb="*" path="handler.aspx" type="HandlerExample.MyHttpHandler,HandlerTest"/> 
'      </httpHandlers> 
'   </system.web> 
'</configuration>

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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