Question

I am trying to create pdf with multiple pages using iTextSharp

Document document = new Document(PageSize.A4, 2, 2, 10, 10);
private PdfContentByte _pcb;

try
{
    PdfWriter writer = PdfWriter.GetInstance(document, output);
    document.Open();             
    document.NewPage();
    _pcb = writer.DirectContent;
    _pcb.BeginText();
    _pcb.ShowTextAligned(PdfContentByte.ALIGN_LEFT, text, x, y, 0);
    _pcb.EndText();
    writer.Flush();
}
catch(e)
{

}
finally
{
    document.Close();
}

This is working fine for me. When I am trying to add a new page on the same document, it is replacing the existing written text with new page and no new page is getting added. Below is the code which is not working.

_pcb.EndText();
writer.Flush();
document.NewPage();
_pcb = writer.DirectContent;
_pcb.BeginText();
_pcb.ShowTextAligned(PdfContentByte.ALIGN_LEFT, text, x, y, 0);
_pcb.EndText();
writer.Flush();

Answer 1

Below is my attempt to clean-up and unify your code. Generally avoid try-catch until you actually have to, you’ll often miss some very important errors. (For instance, you’re not actually setting the font and size which is required but maybe you just omitted that code.) Also, unless you are writing a very large PDF there’s really no reason to flush the buffers, leave that to the OS to do for you when necessary.

When I run the code below I get two pages with text on both pages, does it work for you? (Targeting iTextSharp 5.2.0.0)

        var output = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "Output.pdf");
        var bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1250, BaseFont.NOT_EMBEDDED);
        using (FileStream fs = new FileStream(output, FileMode.Create, FileAccess.Write, FileShare.None)) {
            using (Document doc = new Document(PageSize.A4, 2, 2, 10, 10)) {
                PdfContentByte _pcb;
                using (PdfWriter writer = PdfWriter.GetInstance(doc, fs)) {
                    //Open document for writing
                    doc.Open();
                    //Insert page
                    doc.NewPage();
                    //Alias to DirectContent
                    _pcb = writer.DirectContent;
                    //Set the font and size
                    _pcb.SetFontAndSize(bf, 12);
                    //Show some text
                    _pcb.BeginText();
                    _pcb.ShowTextAligned(PdfContentByte.ALIGN_LEFT, "Page 1", 40, 600, 0);
                    _pcb.EndText();
                    //Insert a new page
                    doc.NewPage();
                    //Re-set font and size
                    _pcb.SetFontAndSize(bf, 12);
                    //Show more text on page 2
                    _pcb.BeginText();
                    _pcb.ShowTextAligned(PdfContentByte.ALIGN_LEFT, "Page 2", 100, 400, 0);
                    _pcb.EndText();
                    doc.Close();
                }
            }
        }