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Handle ajax errors and debug application

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Mac P
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Mac P asked on 14 Jul 2010, 06:04 PM
Hello,
My application is built on telerik ajax platform. I keep on getting following error at random on telerik tab strip control that have dynamic page view which loads user control. The sequence is random and occurs on any tab. If i set enableajax=false than i never get error and everything works great. Is there a way i can figure out where the error orginates from?
Once i get error the page hangs and user has to refresh the page causing loss of data.

 Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500  Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=RadScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a8f393b2b-3315-402f-b504-cd6d2db001f6%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%3aen-US%3acf630f82-0e77-4618-bf5c-22b81f4ec1c5%3a16e4e7cd%3af7645509%3a22a6274a%3aed16cbdc%3a24ee1bba%3ae330518b%3a1e771326%3ac8618e41%3a8e6f0d33%3aaa288e2d%3aa7e79140%3a6a6d718d%3a874f8ea2%3a19620875%3a33108d14%3a8674cba1%3ab7778d6c%3ac08e9f8a%3aa51ee93e%3a59462f1, line 6 character 84093

Secondly i have robust error handling mechanism on server side (elmah), log4net at middle tier and database logger.
Can i implement some centralized error handling for ajax erros?

This error is driving me crazy

Line: 6
Error: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.
Details: Error parsing near 'Telerik.Web.UI 2010.'.

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Maria Ilieva
Telerik team
answered on 15 Jul 2010, 01:43 PM
Hi Mac,

Please review the following help topic which elaborates on Error Handling For Ajax Requests.
I hope this helps.

All the best,
Maria Ilieva
the Telerik team
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Mac P
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answered on 15 Jul 2010, 06:43 PM
Thanks.
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Mac P
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answered on 20 Jul 2010, 04:23 PM

I have implemented ajax handler and most of the errors are handled now. Only error that is not handled is

Error: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.
Details: Error parsing near 'Telerik.Web.UI 2010.'.

The event

 

OnAsyncPostBackError

 

 

="RadScriptManager1_AsyncPostBackError" never gets fired if i get above error and page just hangs.

 

 

 

 

Is there a way to handle the error?
I have checked my code and i dont have response.write. I do have http handlers to download the files and radupload handler that i use to upload the file using silverlight control in the application.

Regards
Mac

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Maria Ilieva
Telerik team
answered on 22 Jul 2010, 01:34 PM
Hello,

The specified message is not an error in your code as this is the Telerik trial message. It will stop popping up as soon as you upgrade to the Dev version of the controls.


All the best,
Maria Ilieva
the Telerik team
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Mac P
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answered on 22 Jul 2010, 03:50 PM
Maria,

Thanks for your reply. This messages has really reduce lot of stress on our side. Would be buying telerik software shortly.
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Mac P
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Maria Ilieva
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Mac P
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