Cookieless Session

[Troy LeGrande]

We're using a RadComboBox within a RadGrid with an ExternalCallBackPage.  Everything was working fine until I implemented the following line in the Web.config:

<sessionState mode="InProc" cookieless="true" timeout="60"></sessionState>

This caused the URL to look like:

http://WebServer/OurApplicationName/(S(kvral4fk0tipgb55bv05sn55))/Default.aspx

This part is new:
(S(kvral4fk0tipgb55bv05sn55))/


The error is "RadComboBox:  load on demand callback error", then:

If RadComboBox is not initially visible on your ASPX page, you may need to use streamers (the ExternallCallBackPage property)
Please, read our online documentation on this problem for details
http://www.telerik.com/help/radcombobox/v2%5FNET2/combo_externalcallbackpage.html

[Rosi]

Hi Troy LeGrande,

Can you isolate the problem in a small and running project and attach the files to a new support thread so that we can test it locally and research the problem? Also, I suggest that you check the approach described at:
Dynamic ExternalCallBackPage usage

Another thing you can try is using the ~/..../ notation instead of referencing the streamer file with no path. Cookieless sessions can only use relative paths.

Regards,
Rosi
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

[J2K]

We've been receiving this error RadComboBox is not initially visible on your ASPX page, you may need to usestreamers (the ExternallCallBackPage property)
Please, read our onlinedocumentation on this problem for details
http://www.telerik.com/help/radcombobox/v2%5FNET2/combo_externalcallbackpage.html

which points to a broken link.  Wrote to Telerik's so called "support" describing the problem in detail and attached the page and code.  All we received back was the correct link which points to resolution of the error when the radcombox is contain in a user control.  But I explained in the support request that the radcomboxbox was NOT IN A USER CONTROL.  Deduction - over the past year Telerik's support has steadily degraded, they clearly don't examine with any degree of focus request for help, and apparently now refuse to acknowledge the flakiness of their controls.  Enough of Telerik

[Ivo]

Hi Mark,

Please accept our apologies for the incomplete response from our support officer. We are working on your case at the moment and you will soon receive a follow-up with a detailed response. Your code has been thoroughly examined and a solution will be offered.

I want to assure you that we are doing our best to keep the highest level of technical support in the industry and we handle every case with diligence. The support threads where we miss to provide complete responses are very rare and the vast majority of our customers are extremely happy (for reference please read this blogpost that I recently found)

We will continue to help you build great projects with RadControls and do our best to keep you as a Telerik customer.

Kind regards,
Ivo Nedkov
Unit Manager, RadControls for ASP.NET AJAX
Telerik

Instantly find answers to your questions on the new Telerik Support Portal.
Check out the tips for optimizing your support resource searches.

[Robert Adkison]

What was the resolution given to Mark?  I am also getting the error that RadComboBox is not initially visible on your ASPX page, you may need to usestreamers (the ExternallCallBackPage property).  I am using Visual Studio 2005, and the RadCombo does not reside within another control.  I do not get the error in the development environment.  The error began after copying the Web Application over to the Web Server (MS Server2003).  The error occurs very seldomly using IE7, but occurs with some frequencey using FireFox.

[Next Gear Solutions User]

Hi-

We are running into the exact same issue with radcombo when using cookieless = "true" in the web.config.

Any resolution pls??

Thanx
Rajesh

[Simon]

Hello Rajesh Wadhwa,

The issue discussed in this forum thread is valid for RadComboBox for ASP.NET and the forum is for RadComboBox for ASP.NET AJAX (where the issue does not exist).

Before providing you with an appropriate advice, can you please specify the exact version of RadComboBox that you are using?

Greetings,
Simon
the Telerik team

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

[Eliza Sahoo]

The Session state in any web technology depend on cookie at the client end to store and resend session id back and forth between client browser and web server.

But Asp.net also supports cookieless sessions with the following attribute addition in the web.config within system.web node.

 

 

With the above config setting, it carry the session id in the page url instead of cookie.