[Solved] LoadDocument not loading if not visible

[Simon]

I have a control on a form that is working fine most of the time. But I'm finding that if I want to print a PDF file from elsewhere in the form (with the PDF Viewer on another tab that is not visible) then the LoadDocument is not working. Is this by design please?

Kind regards,

Simon

[Simon]

To confirm, if I programatically make the COntrol visible with the focus, the LoadDocument works fine...

[Nadya | Tech Support Engineer]

Hi Simon,

Yes, RadPdfViewer should be visible on the form to work properly. If you are interested in printing the PDF file loaded in RadPdfViewer without showing it to the user or in another tab that is not visible at this moment, it seems you need to perform silent print.

Please refer to the following KB article that describes how to print pdfvieweer silently: WinForms PDF Silent Print

I hope this will be suitable for your scenario.

Regards,
Nadya | Tech Support Engineer
Progress Telerik

[Simon]

This seems to work a treat.

Thank you.

Simon