Create a PDF report

Question

I created a printDocument object that prints out a report. It works fine. This is the OnPrintPage event handler:
private void OnPrintPage(object sender, PrintPageEventArgs e)
  { 
  if (page == 2)
  {
  Header(e);
  Page2(e);
  }
  else
  {
  Header(e);
  Page1(e);
  } 
  }
I want to create a PDF of the same document. This is the code:
SaveFileDialog sfd = new SaveFileDialog();
  sfd.Title = "Create PDF";
  sfd.Filter = "(*.pdf)|*.pdf";
  if (sfd.ShowDialog() == DialogResult.OK)
  {
  iTextSharp.text.Document doc = new iTextSharp.text.Document();
  PdfWriter.GetInstance(doc, new FileStream(sfd.FileName, FileMode.Create));
  doc.Open();
  doc.Add(new iTextSharp.text.Paragraph(printDocument)); 
  doc.Close();
  }
This doesn't work. Can you please help me to identify the problem and find a solution? Thank you.