Page X of Y issue

Question

I tried 3 different ways of displaying Page numbers, OnCloseDocument content is not displaying in the page, none of them worked.

My Intention is displaying Page numbers like this

1 of 10
2 0f 10
..............
............
10 of 10 on each page

I know how to display

1
2
3
4
....
10

but don`t know how to display total page number

I`m using OnCloseDocument to display No.of pages count,but the content in it is not displaying.

public class MyPdfPageEventHelpPageNo : iTextSharp.text.pdf.PdfPageEventHelper
{
    protected PdfTemplate total;
    protected BaseFont helv;
    private bool settingFont = false;

    public override void OnOpenDocument(PdfWriter writer, Document document)
    {
        template= writer.DirectContent.CreateTemplate(100, 100);       

        bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
    }
    public override void OnCloseDocument(PdfWriter writer, Document document)
    {
    //See below
    }

1ST WAY:

    public override void OnCloseDocument(PdfWriter writer, Document document)     
    {
        //I create a table with one column like below.
        PdfPTable pageNumber2 = new PdfPTable(1);
        pageNumber2.TotalWidth = 50;
        pageNumber2.HorizontalAlignment = Element.ALIGN_RIGHT;

        pageNumber2.AddCell(BuildTable2RightCells("Page " + writer.PageNumber));
        pageNumber.AddCell(BuildTable2LeftCells(writer.PageCount));
        pageNumber2.WriteSelectedRows(0, -1, 500, 
        (document.PageSize.GetBottom(140)), cb);
    }    

2ND WAY:

    public override void OnCloseDocument(PdfWriter writer, Document document)     
    {
        ColumnText.ShowTextAligned(template,Element.ALIGN_CENTER,new
        Phrase(writer.PageNumber.ToString()), 500, 140, 0);
    }

3RD WAY:

    public override void OnCloseDocument(PdfWriter writer, Document document)     
    {
        template.BeginText();
        template.SetFontAndSize(bf, 8);
        template.SetTextMatrix(500, 140);
        template.ShowText(Convert.ToString((writer.PageNumber - 1)));
        template.EndText();
    }

Am I doing anything wrong?

Answer 1

Your second way is probably the simplest way. Below is a very, very slimmed down but working version:

public class MyPdfPageEventHelpPageNo : iTextSharp.text.pdf.PdfPageEventHelper {
    public override void OnEndPage(PdfWriter writer, Document document) {
        ColumnText.ShowTextAligned(writer.DirectContent, Element.ALIGN_CENTER, new Phrase(writer.PageNumber.ToString()), 500, 140, 0);
    }
}

And to use it:

//Create a file on our desktop
string outputFile = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "OnCloseTest.pdf");
//Standard PDF creation, adjust as needed
using (FileStream fs = new FileStream(outputFile, FileMode.Create, FileAccess.Write, FileShare.None)) {
    using (Document doc = new Document(PageSize.LETTER)) {
        using (PdfWriter writer = PdfWriter.GetInstance(doc, fs)) {

            //Find our custom event handler
            writer.PageEvent = new MyPdfPageEventHelpPageNo();

            doc.Open();

            //Add text the first page
            doc.Add(new Paragraph("Test"));

            //Add a new page with more text
            doc.NewPage();
            doc.Add(new Paragraph("Another Test"));

            doc.Close();
        }
    }
}

EDIT

Sorry, I thought that you were having problems with the basic setup of events, my mistake.

I've only seen two ways to do what you are trying to do, either do two passes or use the PdfTemplate syntax which renders an image as far as I know.

I'd recommend just running two passes, the first just to create your PDF and the second to add your page numbers. You can run your first pass to a MemoryStream so you don't have to hit the disk twice if you want.

PdfReader reader = new PdfReader(outputFile);
using (FileStream fs = new FileStream(secondFile, FileMode.Create, FileAccess.Write, FileShare.None)) {
    using (PdfStamper stamper = new PdfStamper(reader, fs)) {
        int PageCount = reader.NumberOfPages;
        for (int i = 1; i <= PageCount; i++) {
            ColumnText.ShowTextAligned(stamper.GetOverContent(i), Element.ALIGN_CENTER, new Phrase(String.Format("Page {0} of {1}", i, PageCount)), 500, 140, 0);
        }
    }
}

Answer 2

Here is sample code for for the "Chris Haas" explanation (the two pass method with out writing file into harddisk)

The "copy and paste code" using memorystream for page x of y output

protected void Button2_Click(object sender, EventArgs e)
{
    byte[] b = CreatePDF2();        
    string ss = HttpContext.Current.Request.PhysicalApplicationPath;
    string filenamefirst = ss + DateTime.Now.ToString("ddMMyyHHmmss");
    string filenamefirstpdf = filenamefirst + ".pdf";

    using (PdfReader reader = new PdfReader(b))
    {
        using (FileStream fs = new FileStream(filenamefirstpdf, FileMode.Create, FileAccess.Write, FileShare.None))
        {
            using (PdfStamper stamper = new PdfStamper(reader, fs))
            {
                int PageCount = reader.NumberOfPages;
                BaseFont bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.EMBEDDED);

                for (int i = 1; i <= PageCount; i++)
                {
                   string sss = String.Format("Page {0} of {1}", i, PageCount);
                   PdfContentByte over=  stamper.GetOverContent(i);
                   over.BeginText();                        
                   over.SetTextMatrix(500, 750);
                   over.SetFontAndSize(bf, 8);                                              
                   over.ShowText(sss);
                   over.EndText();
                }
            }
        }
    }
}

private byte[] CreatePDF2()
{
    Document doc = new Document(PageSize.LETTER, 50, 50, 50, 50);

    using (MemoryStream output = new MemoryStream())
    {
        PdfWriter wri = PdfWriter.GetInstance(doc, output);
        doc.Open();

        Paragraph header = new Paragraph("My Document") { Alignment = Element.ALIGN_CENTER };
        Paragraph paragraph = new Paragraph("Testing the iText pdf.");
        Phrase phrase = new Phrase("This is a phrase but testing some formatting also. \nNew line here.");
        Chunk chunk = new Chunk("This is a chunk.");

        PdfPTable tab = new PdfPTable(3);
        PdfPCell cell = new PdfPCell(new Phrase("Header", new Font(Font.FontFamily.HELVETICA, 24F)));
        cell.Colspan = 3;
        cell.HorizontalAlignment = 1; //0=Left, 1=Centre, 2=Right   //Style
        cell.BorderColor = new BaseColor(System.Drawing.Color.Red);
        cell.Border = Rectangle.BOTTOM_BORDER; // | Rectangle.TOP_BORDER;
        cell.BorderWidthBottom = 3f;
        tab.AddCell(cell);
        //row 1

        for (int i = 1; i < 120; i++)
        {
            //row 1
            tab.AddCell("R1C1");
            tab.AddCell("R1C2");
            tab.AddCell("R1C3");
            //row 2
            tab.AddCell("R2C1");
            tab.AddCell("R2C2");
            tab.AddCell("R2C3");
        }

        doc.Add(header);
        doc.Add(paragraph);
        doc.Add(phrase);
        doc.Add(chunk);
        doc.Add(tab);
        doc.Close();
        return output.ToArray();
    }
}