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Sys.WebForms.PageRequestManagerServerErrorException: An unknown

Posted By:      Posted Date: August 27, 2010    Points: 0   Category :ASP.Net

I have written a web application that allows user to view crystal reports. When they select the report, application shows the parameters and when they enter parameters and click on OK, it processes the report and displays it on screen. My problem is, I added the AJAX Update panel with Updateprogress control. Now when users enter the parameters and click on Ok, it runs sometimes and then suddenly gives the following message:

Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500

I have triple checked my project to make sure there are no Response.Write / server.tranfer commands. What I have is a label control and it displays any error in the try catch block. Now when I have the AJAX controls, if there is an error it does not even display the error on the label. It either refreshes the screen or show the above error. I googled and could not find a proper solution for this. Only option is to remove the AJAX control. I use VS2005.

The problem is when I run the same report 20 times, 2 or 3 times I get the above error.


Any help is greatly appreciated.

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