I have bben trying to alter the output of a page using PreSendRequestContent. The event get raised but the contents of the document do not change. Here is an example from ASP.NET Professional 2.0 Special Edition.

using System;
using System.Collections.Generic;
using System.Text;
using System.Web;

namespace Demo
{
    public class AppendMessage : IHttpModule
    {
        private HttpContext _current = null;

        #region IHttpModule Members

        public void Dispose()
        {
            throw new Exception("The method or operation is not implemented.");
        }

        public void Init(System.Web.HttpApplication context)
        {
            _current = context.Context;

            context.PreSendRequestContent +=
                new EventHandler(context_PreSendRequestContent);
        }

        void context_PreSendRequestContent(object sender, EventArgs e)
        {
            //alter the outgoing content by adding a HTML comment.
            string message = "<!-- This page has been post processed at " +
                             System.DateTime.Now.ToString() +
                             " by a custom HttpModule.-->";

            _current.Response.Output.Write(message);
        }
        #endregion
    }
}

I looked on the internet and find examples which have similiar code. Can anyone suggest why does not get appended to the contents of the document.

Thanks.

why do you have comment tags "<!-- This

.. because I get want to put a comment in the page.