‫چند ستونه کردن در iTextSharp

using System;

using System.IO;

using iTextSharp.text;

using iTextSharp.text.pdf;

using System.Diagnostics;



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(1);

                table1.WidthPercentage = 100f;

                table1.HeaderRows = 2;

                table1.FooterRows = 1;



                //header row

                var headerCell = new PdfPCell(new Phrase("header"));

                table1.AddCell(headerCell);



                //footer row

                var footerCell = new PdfPCell(new Phrase(" "));

                table1.AddCell(footerCell);



                //adding some rows

                for (int i = 0; i < 400; i++)

                {

                    var rowCell = new PdfPCell(new Phrase(i.ToString()));

                    table1.AddCell(rowCell);

                }



                // wrapping table1 in multiple columns

                ColumnText ct = new ColumnText(pdfWriter.DirectContent);

                ct.RunDirection = PdfWriter.RUN_DIRECTION_RTL;

                ct.AddElement(table1);



                int status = 0;

                int count = 0;

                int l = 0;

                int columnsWidth = 100;

                int columnsMargin = 7;

                int columnsPerPage = 4;

                int r = columnsWidth;

                bool isRtl = true;



                // render the column as long as it has content

                while (ColumnText.HasMoreText(status))

                {

                    if (isRtl)

                    {

                        ct.SetSimpleColumn(

                            pdfDoc.Right - l, pdfDoc.Bottom,

                            pdfDoc.Right - r, pdfDoc.Top

                        );

                    }

                    else

                    {

                        ct.SetSimpleColumn(

                            pdfDoc.Left + l, pdfDoc.Bottom,

                            pdfDoc.Left + r, pdfDoc.Top

                        );

                    }



                    var delta = columnsWidth + columnsMargin;

                    l += delta;

                    r += delta;



                    // render as much content as possible

                    status = ct.Go();



                    // go to a new page if you've reached the last column

                    if (++count > columnsPerPage)

                    {

                        count = 0;

                        l = 0;

                        r = columnsWidth;

                        pdfDoc.NewPage();

                    }

                }

            }



            //open the final file with adobe reader for instance.

            Process.Start("Test.pdf");

        }

}