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How to disable report auto-preview?

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Victor
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Victor asked on 03 Mar 2013, 07:23 AM
I must set all report parameters to some default values. But before to view the report users must be able to change some parameters as the like. And only after the preview button is clicked the report must be generated. Now report is automatically generated unless all parameters are not supplied.
Who can help?
 

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IvanY
Telerik team
answered on 05 Mar 2013, 01:49 PM
Hello Victor,

Currently there is no option to prevent the report viewer from rendering the report if all the parameters have default values. One possible solution would be to leave one parameter without a value (probably the parameter with the least amount of options).

Greetings,
IvanY
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Eric
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answered on 27 Aug 2014, 06:30 PM
Is there still no possibility of preventing report rendering when all parameters have default values?
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Stef
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answered on 29 Aug 2014, 01:30 PM
Hi Eric,

If all parameters have values the report processing will start on displaying the report, unless there is an error in the processing caught in the report's Error event. In the report's Error event you can cancel the further processing of the report and throw a custom error message in the viewer if needed.

Other approach beside providing erroneous values for the report parameters is to use custom UI, from which to refresh the viewer.


I hope the above information is helpful.

Regards,
Stef
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Eric
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answered on 29 Aug 2014, 01:37 PM
Hi Stef,

Do you have a suggestion for a good way to force an error to occur before the report renders automatically?

Are there any plans to implement a feature of turning off the automatic render?

Thanks.
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Stef
Telerik team
answered on 02 Sep 2014, 02:30 PM
Hello Eric,

A possible approach is to set default values for the report parameters, which cause an error (exception) in the data retrieval (even thrown on purse based on the received values) or in the report processing for an expression.

Regards,
Stef
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Rodrigo
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answered on 27 Nov 2017, 03:07 PM

Hi just to be sure, its still no option to stop the rendering until we have the parameters entered by the user?

There is a possible work around?

 

Thanks in advance!

 

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Katia
Telerik team
answered on 30 Nov 2017, 10:11 AM
Hello Rodrigo,

The behavior of the viewers did not change. If the report has parameters with valid default values it will be rendered in the viewer, there is no option to stop the rendering. 

To prevent the report from rendering you can leave a Value property of at least one parameter blank. This will show the notification in the report viewer area about missing parameter values which prompts the end user to enter valid values for all parameters.


Regards,
Katia
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Victor
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IvanY
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Eric
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Stef
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Rodrigo
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Katia
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