Thank you for writing.
This type of functionality is currently not supported: http://www.telerik.com/help/winforms/pdfviewer-unsupported-features.html
However, we consider it appropriate and that is why we added this feature request on our feedback portal
. You can track its progress, subscribe for status changes and add your vote/comment to it on the following link - feedback item
. I have also updated Telerik points
I hope this information was useful. Should you have further questions please do not hesitate to write back.
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Feedback Portal
and vote to affect the priority of the items