ASP.NET - AJAX functionality not working on the page | Getting ‘Sys’ is undefined

re: ASP.NET - AJAX functionality not working on the page | Getting ‘Sys’ is undefined

Dave Callan — Mon, 02 Mar 2009 11:47:51 GMT

Hey man, followed your steps as much as I could and refered this URL to my host, indeed 404s are being returned.

But I still get 'sys is undefined' after I downloaded the client libararies and set scriptpath on the script mamanger control so the code is being found.

What does webResource.axd do, could that have anything to do with it.

re: ASP.NET - AJAX functionality not working on the page | Getting ‘Sys’ is undefined

rakkim — Tue, 17 Mar 2009 16:12:34 GMT

Hi Dave - are you using any custom Javascript code where you refer to Sys? If so, make sure they are following the ScriptManager tag in the ASPX source.

re: ASP.NET - AJAX functionality not working on the page | Getting ‘Sys’ is undefined

Txam — Mon, 29 Jun 2009 18:20:08 GMT

hi Dave, I have this problem. Type, Sys, not defined. I have tried with a lot of solutions but errors continue. I have in my web.config this:

</httpHandlers>

But I am desperate because I don't find a solution.

Please, could you help me????

Thanks a lot.

re: ASP.NET - AJAX functionality not working on the page | Getting ‘Sys’ is undefined

Sini — Thu, 06 Aug 2009 11:56:29 GMT

Hi All

Pls refer this

http://sysisundefined.blogspot.com/2009/08/sys-is-undefined-update-panelajax.html

re: ASP.NET - AJAX functionality not working on the page | Getting ‘Sys’ is undefined

amitsh — Thu, 06 Aug 2009 14:28:10 GMT

Hi Txam,

We would need to take fiddler and netmon traces and look into those. May be you can open up a ticket with Microsoft Developer Support and we can help you out by analyzing those.

Amit

re: ASP.NET - AJAX functionality not working on the page | Getting ‘Sys’ is undefined

Neil — Wed, 26 Aug 2009 17:50:17 GMT

Hi Rakkim,

Great post many thanks. Although this excellent information did not actually solve my issue it did point me to the route of my problem. It took 3 days and many thousands of blogs but the route cause was in the website properties/configuration tab. Under the extension .axd the executable path was correct, however the Verbs were set to (All). In order for ajax to work this should be set to: Limit to: "GET,HEAD,POST,DEBUG" ommit the inverted commas.

This finally got my sites working.

Thanks again

Neil