IHttpHandler.ProcessRequest(HttpContext) Method

Definition

Namespace:

System.Web

Assembly:

System.Web.dll

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

public:
 void ProcessRequest(System::Web::HttpContext ^ context);

public void ProcessRequest (System.Web.HttpContext context);

abstract member ProcessRequest : System.Web.HttpContext -> unit

Public Sub ProcessRequest (context As HttpContext)

Parameters

context

HttpContext

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

Examples

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 C# file HandlerTest.cs and compile it with the
// command line: csc /t:library /r:System.Web.dll HandlerTest.cs.
// Copy HandlerTest.dll to your \bin directory.

using System.Web;

namespace HandlerExample
{
   public class MyHttpHandler : IHttpHandler
   {
      // Override the ProcessRequest method.
      public void ProcessRequest(HttpContext context)
      {
         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);
      }

      // Override the IsReusable property.
      public bool IsReusable
      {
         get { return true; }
      }
   }
}

/*
______________________________________________________________

To use this handler, include the following lines in a Web.config file.

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

' 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).
'
'         <add verb="*" path="handler.aspx" type="HandlerExample.MyHttpHandler,HandlerTest"/>

Remarks

Place your custom HttpHandler code in the ProcessRequest virtual method, as shown in the Examples section.