Itextsharp PdfDocument or PdfDocument from It.Document
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12-06-2021 - |
Question
I am adding page numbers to the bottom of a pdf document using ITextSharp The thing is, it is made up of 4 or 5 different PDF's that are combined through the process, and there are some dynamically added pages so the PDF can vary in size. I cannot call document.PageCount because it "lacks the get accessor".
I made a counter to keep track of what page I am on, and can get the final page to say "Page 9 of 9" but the rest only say "Page 7 of ". I was thinking that I could run the whole document through a PdfReader to call reader.NumberOfPages and rerun each page and add the final number at the bottom but I do not know how to make one from a type iTextSharp.text.Document, nor how to go about it afterwards.
This is a project started by someone else, and I've barely touched iTextSharp before, I cannot remake class because it is too huge.
Does anyone know what I can do? Or how to go about adding that 1 number to each page of an iTextSharp.text.Document?
Solution
Found it guys :D
So whenever you make your writer:
using (MemoryStream MS = new MemoryStream())
{
PdfWriter writer = PdfWriter.GetInstance(doc, MS);
writer.ViewerPreferences = PdfWriter.PageModeUseOutlines;
PdfFooter eventHandler = new PdfFooter();
writer.PageEvent = eventHandler;
ect.
}
For the PdfFooter:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using iTextSharp.text.pdf;
using iTextSharp.text;
public class PdfFooter : PdfPageEventHelper
{
// This is the contentbyte object of the writer
PdfContentByte cb;
// we will put the final number of pages in a template
PdfTemplate template;
// this is the BaseFont we are going to use for the header / footer
BaseFont bf = null;
// This keeps track of the creation time
DateTime PrintTime = DateTime.Now;
#region Properties
private string _Title;
public string Title
{
get { return _Title; }
set { _Title = value; }
}
private string _HeaderLeft;
public string HeaderLeft
{
get { return _HeaderLeft; }
set { _HeaderLeft = value; }
}
private string _HeaderRight;
public string HeaderRight
{
get { return _HeaderRight; }
set { _HeaderRight = value; }
}
private Font _HeaderFont;
public Font HeaderFont
{
get { return _HeaderFont; }
set { _HeaderFont = value; }
}
private Font _FooterFont;
public Font FooterFont
{
get { return _FooterFont; }
set { _FooterFont = value; }
}
#endregion
// we override the onOpenDocument method
public override void OnOpenDocument(PdfWriter writer, Document document)
{
try
{
PrintTime = DateTime.Now;
bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
cb = writer.DirectContent;
template = cb.CreateTemplate(50, 50);
}
catch (DocumentException de)
{
}
catch (System.IO.IOException ioe)
{
}
}
public override void OnEndPage(PdfWriter writer, Document document)
{
base.OnEndPage(writer, document);
int pageN = writer.PageNumber;
String text = "Page " + pageN + " of ";
float len = bf.GetWidthPoint(text, 8);
Rectangle pageSize = document.PageSize;
cb.SetRGBColorFill(100, 100, 100);
cb.BeginText();
cb.SetFontAndSize(bf, 8);
cb.SetTextMatrix(pageSize.GetRight(70), pageSize.GetBottom(15));
cb.ShowText(text);
cb.EndText();
cb.AddTemplate(template, pageSize.GetRight(70) + len, pageSize.GetBottom(15));
}
public override void OnCloseDocument(PdfWriter writer, Document document)
{
base.OnCloseDocument(writer, document);
template.BeginText();
template.SetFontAndSize(bf, 8);
template.SetTextMatrix(0, 0);
template.ShowText("" + (writer.PageNumber - 1));
template.EndText();
}
}
Hope this helps someone in the future :)