How to Add Page number in Footer in PDF by Itextsharp

Question

I am using iTextSharp DLL in ASP.NET code. I am fetching a data into dataset and Add the dataset into PDF table.

If my dataset have more 100 rows then 100 rows will

Answer 1

You must inherit pageeventhepler to add page number to dynamically generated pdf pages.

public void printPdf()
{
    Document doc = new Document(PageSize.A4.Rotate());
    using (MemoryStream ms = new MemoryStream())
    {
        PdfWriter writer = PdfWriter.GetInstance(doc, ms);
        PageEventHelper pageEventHelper = new PageEventHelper();
        writer.PageEvent = pageEventHelper;
    }
}

public class PageEventHelper : PdfPageEventHelper
{
    PdfContentByte cb;
    PdfTemplate template;


    public override void OnOpenDocument(PdfWriter writer, Document document)
    {
        cb = writer.DirectContent;
        template = cb.CreateTemplate(50, 50);
    }

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

        int pageN = writer.PageNumber;
        String text = "Page " + pageN.ToString() + " of ";
        float len = this.RunDateFont.BaseFont.GetWidthPoint(text, this.RunDateFont.Size);

        iTextSharp.text.Rectangle pageSize = document.PageSize;

        cb.SetRGBColorFill(100, 100, 100);

        cb.BeginText();
        cb.SetFontAndSize(this.RunDateFont.BaseFont, this.RunDateFont.Size);
        cb.SetTextMatrix(document.LeftMargin, pageSize.GetBottom(document.BottomMargin));
        cb.ShowText(text);

        cb.EndText();

        cb.AddTemplate(template, document.LeftMargin + len, pageSize.GetBottom(document.BottomMargin));
    }

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

        template.BeginText();
        template.SetFontAndSize(this.RunDateFont.BaseFont, this.RunDateFont.Size);
        template.SetTextMatrix(0, 0);
        template.ShowText("" + (writer.PageNumber - 1));
        template.EndText();
    }
}