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Performance factors for exporting a grid to PDF

Hi all,

I have an application that exports a grid to PDF. I handle several events to make changes to the layotu of the grid so that it looks more like a report in the PDF document.

We've been testing the speed of generating the report and have noticed that the difference in exporting 10, 20 or 30 thousand rows does not differ (only by a few seconds - taking over 5 minutes in total). We're filtering the rows down from 30,000 to test - expecting that it would be quicker. There is also no difference between 50 and thousands of rows either...

Does anyone know what factors affect the performance of the PDF export?

Is it the number of rows (regardless of any filters), the number of columns, the number of pages it produces etc.?

We have found that collapsing any groups in the grid does speed the report generation greatly, however.

Any help will be greatly appreciated.



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