Hi Devon,
Thank you for your interest in Syncfusion products.
1.I would like to use an existing pdf document:We don't have support for open an existing PDF documnet in our new PDF. In our PDF legacy version, we can open the existing PDF documents. We can read the PDF document only page by page. But Reading feature for new PDF will be available in our next release, it’s in under development.
2.I want to use our company's letterhead as a template and use it on every page. Is this possible?Essential PDF has support for drawing a Header and a Footer to a pdf document. It is possible to display company's letterhead on every page by using Addheader. Please refer the below code snippet:
[C#]
PDFDocument pdfDoc = new PDFDocument(Server.MapPath(@"Data\sample1.pdf"));
foreach (IPDFPage p in pdfDoc.Pages)
{
PDFTemplateArea header = AddHeader(pdfDoc , "Company Logo ","customer");
p.Header = header;
}
Please refer the sample in the below link which illustrates the above:
http://websamples.syncfusion.com/samples/PDF.Web/6.1.0.34_Legacy/72140/main.htmPlease try this and let me know if this helps.
Regards,
G.Yavana