设置每页固定的行数，使用itextsharp生成PDF

Question

I have a List<object> and this list contains thousands of record. I want to generated pdf using itextsharp. and Pdfptable to generated pdf it is working fine, but but I want only 10 records per page in pdf.
How can I do it?

Answer 1

Another way to set the number of rows per page:

using System.Diagnostics;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace RowsCountSample
{
    class Program
    {
        static void Main(string[] args)
        {
            using (var pdfDoc = new Document(PageSize.A4))
            {
                var pdfWriter = PdfWriter.GetInstance(pdfDoc, new FileStream("Test.pdf", FileMode.Create));
                pdfDoc.Open();

                var table1 = new PdfPTable(3);
                table1.HeaderRows = 2;
                table1.FooterRows = 1;

                //header row 
                var headerCell = new PdfPCell(new Phrase("header"));
                headerCell.Colspan = 3;
                headerCell.HorizontalAlignment = Element.ALIGN_CENTER;
                table1.AddCell(headerCell);

                //footer row 
                var footerCell = new PdfPCell(new Phrase("footer"));
                footerCell.Colspan = 3;
                footerCell.HorizontalAlignment = Element.ALIGN_CENTER;
                table1.AddCell(footerCell);

                //adding some rows 
                for (int i = 0; i < 70; i++)
                {
                    //adds a new row
                    table1.AddCell(new Phrase("Cell[0], Row[" + i + "]"));
                    table1.AddCell(new Phrase("Cell[1], Row[" + i + "]"));
                    table1.AddCell(new Phrase("Cell[2], Row[" + i + "]"));

                    //sets the number of rows per page
                    if (i > 0 && table1.Rows.Count % 7 == 0)
                    {
                        pdfDoc.Add(table1);
                        table1.DeleteBodyRows();
                        pdfDoc.NewPage();
                    }
                }

                pdfDoc.Add(table1);
            }

            //open the final file with adobe reader for instance. 
            Process.Start("Test.pdf");
        }
    }
}

Answer 2

In the most recent version of iTextSharp (5.3.3), new functionality was added allowing you to define breakpoints: SetBreakPoints(int[] breakPoints) If you define an array of multiples of 10, you can use this to get the desired effect.

If you have an older version, you should loop over the list and create a new PdfPTable for every 10 objects. Note that this is the better solution if you want to keep the memory use of your application low.