ASP.NET AJAX Discussion and Suggestions

Re: 'Sys' is undefined.

Thomas Thayil — Fri, 24 Jul 2009 15:40:20 GMT

Try adding this under <system.web> in web.config: -

</httpHandlers>

Re: 'Sys' is undefined.

Mattski78 — Fri, 03 Jul 2009 04:28:20 GMT

I found that running aspnet_regiis.exe - i from the v2.0x Microsoft.Net folder (under Windows) solved my problem.
The web.config entries were all correct, but until i reset the script mappings i had no luck.

Re: 'Sys' is undefined.

Tarmuar — Fri, 26 Jun 2009 10:03:13 GMT

Mr Blue Coat:

ScriptResource.axd handles the ScriptManager control that AJAX requires. WebResource.axd handles embedded resources (such as embedded css files, embedded images, etc.) SiteMinder intercepts all page calls and verifies any referenced file or resource exists before allowing the associated code to run. ScriptResource.axd is referenced on your page (view the source code when running to see for yourself) but the ScriptResource.axd file only exists in memory (.NET 2.0 creates it dynamically). Thus, SiteMinder sees a reference to a file that "supposedly" doesn't exist and therefore blocks the creation of the 'Sys' object (hence, 'Sys' not defined). Likewise, the WebResource.axd file "supposedly" doesn't exist so SiteMinder blocks built-in css styles (i.e. ajax__calendar) and your toolkit controls will appear without any formatting.

This one is a bit old, but it still applies to those who use SiteMinder (CA Netegrity) if you are having this problem. If this is already answered elsewhere in this thread sorry for the repeat in advance.

Our problem manifested not as a "Sys" problem, but just that everything that was AJAX based didnt appear which, in our case, was about 70% of the information provided by our site. Not a good thing. A check of the weblogs showed every single call to an .axd file was returned as a 404 error. We turned off Siteminder and tried again and everything worked fine.

What Blue Coat wrote is correct, but you don't need to add the two empty files. As stated elsewhere it does work but it doesn't address the root of the problem. To make Siteminder stop blocking it:

Go into your IIS Manager and right-click the root of your site and select Properties.
Under Home Directory, click Configuration.
There should be a Wildcard entry for ISAPI6WebAgentDLL there (we are using CA Siteminder v6.xx so its there for us). Highlight it and click Edit.
Make sure the checkbox for Verify that file exists is unchecked.
Click through on OK.

I was pulling my hair out trying to figure this one out, we are standing up a new server and everything mirrored the old one yet SSO worked on the old and not on the new. After a couple days of working with the helpdesk found out that the updated installation documentation we were provided omitted that fact to ensure you uncheck that checkbox, the older documentation we used to install on the old server had it. By default, when adding a Wildcard Mapping that checkbox is checked.

No guarantees this will work 100% of the time but as soon as I unchecked the box everything on my new server site worked, menu bars, tabs, all the AJAX just suddenly appeared. Oh Happy Day...heh heh. Hope this helps.

Re: 'Sys' is undefined.

Jerrz — Fri, 05 Jun 2009 20:10:03 GMT

I had this problem too, but only on a couple of pages: the following was my error:

protected override void OnPreRenderComplete(EventArgs e)
{
//My Code
}

MUST be:

protected override void OnPreRenderComplete(EventArgs e)
{
base.OnPreRenderComplete(e);
//My Code
}

Re: 'Sys' is undefined.

phanisivakumar — Wed, 27 May 2009 15:12:01 GMT

Iam getting the same error when i use Telerik RadScriptManager. Just to document this, iam placing here.

Try this:

<system.web>

</authorization>

</system.web>

</location>

Re: 'Sys' is undefined.

Ravina — Mon, 30 Mar 2009 15:20:35 GMT

Here's another post which talks about a similar error: http://forums.asp.net/t/1206468.aspx

Re: 'Sys' is undefined.

malari — Sat, 28 Mar 2009 18:15:33 GMT

Please have a look at this link it may be helpful

http://forums.asp.net/p/1206468/3044068.aspx#3044068

Re: KB912812 may fix it.

malari — Fri, 27 Mar 2009 23:48:54 GMT

please chek this too . there are many reasons for it

http://forums.asp.net/p/1206468/3044068.aspx#3044068

Re: 'Sys' is undefined.

urpalshu — Thu, 26 Mar 2009 16:08:13 GMT

Please go to this link it has an excellent solution

http://geekswithblogs.net/ranganh/archive/2006/11/24/98276.aspx

This error may come particularly if you are upgrading from Beta 1 to Beta 2.

The error is primarily because a new script resource handler is added which requires an entry in the Web.Config.

The following is the steps to solve this issue:-

1. Open the Web.Config file of your ASP.NET AJAX Enabled Web Application

2. Within the <httpHandlers> </httpHandlers> section, add the following entry

<add verb="GET" path="ScriptResource.axd" type="Microsoft.Web.Handlers.ScriptResourceHandler" validate="false"/>

The <httpHandlers> section must be available within the <system.web> </system.web> sections in your web.config. In fact there would already be 2 add verb entries under which you can append the above entry.

3. Save the Web.Config file.

4. You must be able to run the pages without the error now.

5. This is well documented in the Release Notes that accompany the Beta installer. It is still available at your C:\Program Files\Microsoft ASP.NET\ASP.NET 2.0 AJAX Extensions\v1.0.61025\ReleaseNotes.txt

Re: 'Sys' is undefined.

karmacarrot — Thu, 19 Mar 2009 17:41:06 GMT

I also solved this issue by creating an ajax enabled site and copying the key areas out of it's web.config. These are the 3 main areas which enabled my site:

Re: 'Sys' is undefined.

ramaswamykarthik — Fri, 13 Mar 2009 08:33:05 GMT

I have developed application using .NET 1.1 and conveted it to .NET 2.0 and added all the necessary for AJAX to work. It seems to work fine in my local system. When deployed on to DEV, UAT and on to PROD, it seems to work in UAT but sys is undefined javascript occurs in both DEV and PROD server. Code is the same as its the deployment. It works in my local system too but fails in DEV server. Any suggestion. Win2K3 is the server in DEV, UAT and PROD.

Pls revert if you have any suggestion on this..

Re: KB912812 may fix it.

aspbyniks — Tue, 03 Mar 2009 14:58:49 GMT

Can you check one of this files in your windows directory Path is "C:\WINDOWS\system32\inetsrv\urlscan\urlscan.ini"

In the file find the [AllowExtensions] and see if it has .axd under its valid extension list and is not under the [DenyExtensions] list.

If not remove, it from the Deny list and add it to the allow section

It worked for me... hope it works for you as well

Regards

Niks

Re: 'Sys' is undefined.

hjvorster — Tue, 03 Mar 2009 13:22:15 GMT

I had only problem with IE6, adding the following lines in web.config did the job:

<system.web.extensions>
<scripting>
<scriptResourceHandler enableCompression="false" enableCaching="true" />
</scripting>
</system.web.extensions>

Re: KB912812 may fix it.

amankazi@gmail.com — Tue, 03 Mar 2009 05:57:10 GMT

I am making use of IE 7 and still I am facing problem "SYS undefined".

I even added "

" under the tag <system.web>.

Still I am facing the problem

Re: 'Sys' is undefined.

Jakob Flygare — Mon, 22 Dec 2008 16:13:34 GMT

I solved the problem, not using the Ajax-enabled template, by adding the section below to the web.config.

<httpHandlers>
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
</httpHandlers>

On my aspx-page I use the script manager and the updatepanel of the extensiontoolkit for vs 2005.
Be sure to register the System.Web.Extensions assembly below

<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI" TagPrefix="asp" %>