HTTPModule Chapter 27

sherbug · July 16th, 2010, 01:23 PM

The example in 27-2 is not working for me.

Has anyone else had trouble getting this code to work.

FrostyMorn · July 30th, 2010, 05:36 PM

Yes, I could not get it to work as written - but I did get it to work with two changes:

Instead of using the PreSendRequest event, I used the PostRequestHandlerExecute. And I did not save the context in a private instance variable, instead I explicitly called the HttpContext.Current.Response.Output.Write() method in my event handler.

The code in the book works once, only the first time, in my experience.

Code:

        void context_PostRequestHandlerExecute(Object sender, EventArgs e)
        {
            //alter outgoing request by adding HTML content

            string message = @"<!-- This page has been post processed  at " +
                System.DateTime.Now.ToString() +
                @" by a custom HttpModule. -->";

            HttpContext.Current.Response.Output.Write(message);
         }

chroniclemaster1 · August 1st, 2010, 07:29 PM

Do you mean the code as exactly in the book only works the first time, or that your modified code only works the first time? Did your modifications correct your problem or are you still having trouble?

HTTP Modules and Handlers are really powerful tools once you get used to working with them, and give you a lot of extra possibilities.

FrostyMorn · August 1st, 2010, 07:46 PM

Quote:

...Do you mean the code as exactly in the book only works the first time...

Yes.

Quote:

...Did your modifications correct your problem or are you still having trouble?

My code works consistently. The code in the book does not, the problem the OP, sherbug, was having is with the code in the book. A bug, or perhaps some overlooked configuration requirement - I didn't dig into that.

robbaralla · August 21st, 2010, 02:03 PM

I had exactly the same problem, the code did not work, not even the first time.
Your change of the PreSendRequestContent event into the PostRequestHandlerExecute event did the trick.