Hi David,
Thank you for contacting Syncfusion support.
We can achieve your requirement by using the Append method
of PdfLoadedDocument. After appending the document, save it as a stream and
then load it using the load method of PdfViewerControl. We have also created a
sample for your reference and attached below.
Please let us know whether you need further assistance on
this.
Regards,
Raja Vignesh.
Attachment:
WinformsPDFViewer_96744b12.zip