Paulo Morgado : PageModules

Are Page Modules Still Useful In IIS7?

Paulo Morgado — Mon, 15 Oct 2007 00:19:20 GMT

With IIS7 a new transfer method is available in the HttpServerUtility class. It's the TransferRequest method.

What this method is intended to do is behave like the HttpResponse.Redirect method without the penalty of traveling to the client and back.

I said "is intended to behave" because it still doesn't, like Luís Abreu found out in his first attempt to use this new method. Fortunately, Thomas Marquardt already knows about it and said they will fix it.

This problem that Luís ran into reminds us that there is still too much going on when you call TransferRequest that won't be if a Page Module is used. So, I guess they are still useful.

You Don't Always Need Page Modules

Paulo Morgado — Sun, 16 Sep 2007 18:02:45 GMT

From my article on Page Modules some people might have gotten the wrong impression that this would be the only way to get a reference to the page given its path, but it isn't.

You can use the System.Web.UI.PageParser.GetCompiledPageInstance method to get the reference to the page before calling the System.Web.HttpServerUtility.Transfer method.

There's one caveat, though. Unlike the version of the System.Web.HttpServerUtility.Transfer method where you that takes a virtual path as an argument, this one will not change the values of the System.Web.HttpRequest.AppRelativeCurrentExecutionFilePath and System.Web.HttpRequest.CurrentExecutionFilePath properties won't change from the original request.

That can either be a problem or the solution to a problem.

Introducing ASP.NET Page Modules

Paulo Morgado — Sun, 09 Sep 2007 22:58:00 GMT

From the need to handle events in every rendered page and not wanting to pay the penalties (network usage and server load) of frequent client redirects, I came up with the concept of Page Modules.

Read all about it.