ขอคำแนะนำเรื่อง C# การ export pdf หน่อยครับ พอดีมันไม่ขึ้นรูปภาพอ่ะครับ

  {
            string ProgramFiles = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "โปรแกรมจัดการวัสดุครุภัณฑ์.pdf");
            //string path = "C:\\Program Files\\Report.pdf";
            BaseFont bf = BaseFont.CreateFont(FONT, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
            iTextSharp.text.Font fonts = new iTextSharp.text.Font(bf, 10);
            BaseFont bf2 = BaseFont.CreateFont(FONT, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
            iTextSharp.text.Font fonts2 = new iTextSharp.text.Font(bf2, 10);
            Document doc = new Document(PageSize.A4, 20f, 20f, 20f, 20f);
            doc.SetPageSize(iTextSharp.text.PageSize.A4.Rotate());
            PdfWriter wri = PdfWriter.GetInstance(doc, new FileStream(ProgramFiles, FileMode.Create));
            doc.Open();
            Paragraph date = new Paragraph("รายงานประจำวัน : " + System.DateTime.Now.ToString("dddd, dd MMMM yyyy hh:mm tt"), fonts2);
            date.SpacingAfter = 20;
            date.Alignment = Element.ALIGN_CENTER;
            doc.Add(date);
            var img = iTextSharp.text.Image.GetInstance(@"C:\MCE02\Picture\590590.jpg");
            PdfPTable table = new PdfPTable(dataGridView1.Columns.Count);

            for (int j = 0; j < dataGridView1.Columns.Count; j++)
            {
                table.AddCell(new Phrase(dataGridView1.Columns[j].HeaderText, fonts));
            }

            //Flag the first row as a header
            table.HeaderRows = 1;

            //Add the actual rows from the DGV to the table
            for (int i = 0; i < dataGridView1.Rows.Count; i++)
            {
                for (int k = 0; k < dataGridView1.Columns.Count; k++)
                {
                    if (dataGridView1[k, i].Value != null)
                    {
                        if (dataGridView1[k, i].Value.ToString() == "System.Drawing.Bitmap")
                        {
                            byte[] byteMP = (byte[])dataGridView1[k, 13].Value;
		table.AddCell(iTextSharp.text.Image.GetInstance(byteMP));
                        }
                        else
                        {
                            table.AddCell(new Phrase(dataGridView1[k, i].Value.ToString(), fonts));
                        }
                    }
                }
            }
            MessageBox.Show("Export to My Documents", "แจ้งเตือน", MessageBoxButtons.OK, MessageBoxIcon.Information);
            //Add out table
            doc.Add(table);
            doc.Close(); //Close document
        }