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WebForms.ReportViewer times out when rendering data

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Frank Flood
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Frank Flood asked on 03 Jun 2010, 03:27 PM
We have recently converted many of our reports to use the new Telerik reporting and Web Viewer.  While most of these reports are running fine, there are some time-out issues we are running into.  The issues deal with the amount of data being renderred on the report and the values returned.  I have checked and the Stored Procedure getting the data is returning in just a few seconds, so the issue is not with data retrieval from the database.  What I am seeing is the following:

  • Select the report we want to view.  This makes the postback call to the server to retrieve the data.
  • The page returns from the postback, and the ReportViewer has the 'processing' icon displayed inside the content area.
  • This 'processing' continues for a minute or so and then times out while trying to render the report.

I know the report being displayed contains a lot of data.  Is there any way to set the viewer to have additional properties to allow it to process longer?  Is it actually making an additonal postback or AJAX call to the server after the initial postback to generate the actual report or is that done on the client?  Are there other settings we can use to speed up rendering if there is a lot of data being returned?

Thanks.

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Peter
Telerik team
answered on 08 Jun 2010, 03:16 PM
Hello Frank,

We are unable to reproduce the behavior with the steps you have provided. As there are several possible reasons for timeout (session, connection, script) - please send us a screenshoot or/and the log from the Administrative Tools -> Event Viewer so we can further advise you.

For general performance tips check out the Performance Considerations KB article.

Regards,
Peter
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Frank Flood
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Peter
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