/// <summary>
/// Renders the PDF to an array of bytes
/// </summary>
public byte[] AddPageNumbers(byte[] pdf)
{
MemoryStream ms = new MemoryStream();
// we create a reader for a certain document
PdfReader reader = new PdfReader(pdf);
// we retrieve the total number of pages
int n = reader.NumberOfPages;
// we retrieve the size of the first page
Rectangle psize = reader.GetPageSize(1);
float topmar = 50;
// step 1: creation of a document-object
Document document = new Document(psize, 50, 50, topmar, 50);
// step 2: we create a writer that listens to the document
PdfWriter writer = PdfWriter.GetInstance(document, ms);
// step 3: we open the document
document.Open();
// step 4: we add content
PdfContentByte cb = writer.DirectContent;
int p = 0;
string curDate = GeneralMethod.getLocalDateTimeAMPM();
for (int page = 1; page <= reader.NumberOfPages; page++)
{
document.NewPage();
p++;
PdfImportedPage importedPage = writer.GetImportedPage(reader, page);
cb.AddTemplate(importedPage, 0, 0);
BaseFont bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
cb.BeginText();
cb.SetFontAndSize(bf, 9);
cb.ShowTextAligned(PdfContentByte.ALIGN_LEFT, "Printed on " + curDate, 7, (importedPage.Height) - 20, 0);
cb.ShowTextAligned(PdfContentByte.ALIGN_LEFT, "Page " + p + " of " + n, (importedPage.Width) - 60, (importedPage.Height) - 20, 0);
cb.EndText();
}
// step 5: we close the document
document.Close();
return(ms.ToArray());
}