Is it possible to get the content of a web page and change it dynamically?

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What I want to do is: At some point (say, during the OnLoad event) scan the page for directives, take actions to implement those directives, and remove the directives from the text, similar to the way that Wikipedia will replace {TOC} with a dynamically generated table of contents. The only part of the "how to" I cannot figure out is how to get and then alter the text of the page during the page's life cycle.

Right now I'm doing this sort of thing with Javascript, but that relies on my users having Javascript enabled, with is not a safe assumption. Another option would be to use a "shell" page and load the content from a text file that I can manipulate before embedding it. I think that changing the text in-place would be faster, though, so I'd like to try that first.

My site uses a master/child construction, if that makes any difference.

So, any suggestions?

Posted 5-Mar-11 14:37pm

Gregory Gadow

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Christoph Keller · Accepted Answer · 2011-03-06T22:45:00

Solution 1

Hello,

Have you allready tried the Response.Filter?

Here is an example of using it (used to do modifications to the HTML source that it will be XHTML-Compilant):
http://aspnetresources.com/articles/HttpFilters[^]

You can attach the filter anywhere you want in the page-cycle. If you want to process each request with the filter, you can attach the filter in the global.asax Application_BeginRequest event. If you do so, you need to check that the content-type is 'text/html'.

Hope this helps.

Best regards,
Stops

Posted 6-Mar-11 22:45pm

Christoph Keller

Comments

Gregory Gadow 7-Mar-11 15:40pm

That is a very intruiging idea, thanks. Never heard of that property before, and the BeginRequest thing looks interesting.

Gregory Gadow 9-Mar-11 12:19pm

Many thanks! Request.Filter does the trick, and I'm writing out my solution as an article.

Christoph Keller 10-Mar-11 2:28am

You're welcome, I'm happy that I was able to help.
Would love to read your article about the Response.Filter!

Gregory Gadow 10-Mar-11 9:51am

http://www.codeproject.com/KB/aspnet/serversidetoc.aspx