C#

string path = Path.GetTempPath() + Path.GetRandomFileName() + ".pdf";

            PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(path, FileMode.Create));
            document.Open();
            document.Add(new Paragraph("Karaoke Go!"));


            iTextSharp.text.Font font5 = iTextSharp.text.FontFactory.GetFont(FontFactory.HELVETICA, 9);

            PdfPTable table = new PdfPTable(dt.Columns.Count);
            PdfPRow row = null;
            float[] widths = new float[] { 6f, 6f, 1f };

            table.SetWidths(widths);

            table.WidthPercentage = 100;
            int iCol = 0;
            string colname = "";
            PdfPCell cell = new PdfPCell(new Phrase("Karaoke Go"));

            cell.Colspan = dt.Columns.Count;

            foreach (DataColumn c in dt.Columns)
            {

                table.AddCell(new Phrase(c.ColumnName, font5));
            }

            foreach (DataRow r in dt.Rows)
            {
                if (dt.Rows.Count > 0)
                {
                    table.AddCell(new Phrase(r[0].ToString(), font5));
                    table.AddCell(new Phrase(r[1].ToString(), font5));
                    table.AddCell(new Phrase(r[2].ToString(), font5));
                }
            } document.Add(table);
            document.Close();

            System.Diagnostics.Process.Start(path);