Currently, PdfProcessing does not support headers out of the box. However, you can implement the desired functionality by iterating through the pages in the document and draw the headers on each page. Please, find attached a sample project demonstrating this approach.
We understand that this is inconvenient and we have logged a feature request in our feedback portal: Implement API for repeating table rows on every page, where you can subscribe to be notified for any status updates. I have added vote on your behalf to increase the priority of the feature.
I hope this helps.
Regards,
Georgi
Progress Telerik
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