how can I add a PdfPTable as footer in last page?

Question

I want to add a PdfPTable as page footer only to the last page of the generated PDF document. The table will have 4 columns of the same width. I have tried other solutions I found here and in other sites to no avail. I have set the bottom margin to different values to leave space to the footer and I have tried several tips to add a PDF footer, but still nothing is shown. Any help is appreciated.

Here is my code:

   // The document creation

   Document prDoc = new Document(PageSize.A4, 15f, 15f, 10f, 50f);
   PdfWriter pdfWriter = PdfWriter.GetInstance(prDoc, Response.OutputStream);

   // The event manager
   prPageEvent pdfEvent = new prPageEvent();
   pdfWriter.PageEvent = pdfEvent;
   prDoc.Open();
   .
   .
   .
   public class prPageEvent : PdfPageEventHelper {
      public PdfTemplate template;
      public PdfContentByte cb;
      BaseFont bf = null;

      public override void OnOpenDocument(PdfWriter writer, Document document) {
         try {
            bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
            cb = writer.DirectContent;
            template = cb.CreateTemplate(PageSize.A4.Width, 50);
         }
         catch (DocumentException de) {
         }
         catch (System.IO.IOException ioe) {
         }
      }

      public override void OnCloseDocument(PdfWriter writer, Document document) {
         base.OnCloseDocument(writer, document);

         PdfPTable f = new PdfPTable(4);
         f.TotalWidth = document.PageSize.Width - document.LeftMargin;

         f.AddCell(new PdfPCell(new Phrase("first")));
         f.AddCell(new PdfPCell(new Phrase("second")));
         f.AddCell(new PdfPCell(new Phrase("third")));
         f.AddCell(new PdfPCell(new Phrase("fourth")));
         f.WriteSelectedRows(0, -1, document.LeftMargin+5, document.PageSize.Height-35, writer.DirectContent);

         // Only the following simple text has worked so far, but I cannot set 
         // the exact width to each column with this approach.

         //template.BeginText();
         // template.SetFontAndSize(BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, false), 8);
         // template.SetTextMatrix(0, 40);
         // template.ShowText("first   second   third   fourth");
         //template.EndText();
      }

      public override void OnEndPage(PdfWriter writer, Document document) {
         base.OnEndPage(writer, document);
         BaseFont bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, false);
         System.String text = "OnEndPage";
         float len = bf.GetWidthPoint(text, 8);
         iTextSharp.text.Rectangle pageSize = document.PageSize;
         cb.BeginText();
         cb.SetFontAndSize(bf, 8);
         cb.SetTextMatrix(pageSize.GetLeft(40), pageSize.GetBottom(30));
         cb.EndText();
         cb.AddTemplate(template, pageSize.GetLeft(40) + len, pageSize.GetBottom(30));
      }
   }

I have followed examples like https://stackoverflow.com/questions/12796525/add-a-pdfptable-to-bottom-of-page-in-itext https://stackoverflow.com/questions/1032614/itextsharp-creating-a-footer-page-of https://stackoverflow.com/questions/18996323/add-header-and-footer-for-pdf-using-itextsharp — Joaquin GS, Jun 20 '17 at 04:16

score 2 · Answer 1 · answered Jun 22 '17 at 04:44

The solution to this was not to create a class inheriting from PdfPageEventHelper and override its methods, but to write the content directly in the PDF document just before the document gets closed by creating a PdfPTable object and write it directly with the WriteSelectedRows method. There was no need to use the OnCloseDocument method for something that needs to appear in the document only once at the end of it.

My final code:

Immediately after printing the header and the content...

// Table for final footer.
float[] cols = new float[] { 137, 10, 137, 10, 137, 10, 127 };
PdfPTable f = new PdfPTable(7);
f.SetWidthPercentage(cols, PageSize.A4);

// Populate the table
f.AddCell(pdfUtils.newCell("Lorem", detail_font_size, PdfPCell.ALIGN_CENTER, 1) );
f.AddCell(pdfUtils.newCell(" ", detail_font_size, PdfPCell.ALIGN_CENTER, 0));
f.AddCell(pdfUtils.newCell("Ipsum", detail_font_size, PdfPCell.ALIGN_CENTER, 1));
f.AddCell(pdfUtils.newCell(" ", detail_font_size, PdfPCell.ALIGN_CENTER, 0));
f.AddCell(pdfUtils.newCell("exquisitaque", detail_font_size, PdfPCell.ALIGN_CENTER, 1));
f.AddCell(pdfUtils.newCell(" ", detail_font_size, PdfPCell.ALIGN_CENTER, 0));
f.AddCell(pdfUtils.newCell("responsum", detail_font_size, PdfPCell.ALIGN_CENTER, 1));

// Write the footer using absolute positioning.
f.WriteSelectedRows(0, -1, prDoc.LeftMargin, 75, pdfWriter.DirectContent);

// Close the document
pdfWriter.CloseStream = false;
prDoc.Close();

how can I add a PdfPTable as footer in last page?

1 Answers1