Use the attached pdf document and launch the PdfPrintPreviewDialog. As it is demonstrated in the gif file, the preview dialog moves the pages slower than the pdf viewer itself.
Expected behavior: the performance for navigating the pages should be at least identical.
Hello, Giovanni,
The PdfPrintPreviewDialog internally uses an array of PreviewPageInfo to generate a preview image on demand when the user navigates with the next/previous buttons. A possible way of optimization is to cache the images and if next/prev buttons are clicked without applying any other changes we can use the cached images instead.
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Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik
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