Export multiple DataTables into different pages in single pdf using C# and VB.Net in ASP.Net

i need to generate an invoice in pdf , here is my code, in this i'm genating one invoice format pdf file but i need to generate two tables of data in different pages of single pdf file, how can i do that

string EsNo = txtesno.Text.Trim();
            string DcNo = _delcno.ToString();
            string person = ddlsp.SelectedItem.Text;
            string area = txtarea.Text.Trim();
            string IssuedStock = string.Empty;
            string Note = "".ToString();
            Note.ToLower();

            EsugumObject objco = new EsugumObject();


            objco.BranchCode = _CompId.ToString();
            objco.DCNo = _delcno.ToString();
            //objco.EsugumNo = EsNo.ToString(); 
            objco.SalesCode = ddlsp.SelectedItem.Value;

            // string date = DateTime.Parse(_uploaddate.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);

            objco.DcDate = _uploaddate.ToString();

            EsugumLayer objcl = new EsugumLayer();

            DataTable dt = objcl.DisplayDc(objco);

            var sum = dt.AsEnumerable().Sum(x => Convert.ToInt32(x["IssuedStock"]));

            _tsum = dt.AsEnumerable().Sum(x => Convert.ToInt32(x["IssedValue"]));
            ShowWords();


            dt.Columns["PName"].ColumnName = "Product";
            dt.Columns["Pack"].ColumnName = "Pack";
            dt.Columns["Price"].ColumnName = "Price";
            dt.Columns["IssuedStock"].ColumnName = "IssuedStock";
            dt.Columns["IssedValue"].ColumnName = "IssuedAmount";


            //HSN and M's DC Generation

            //DataTable Mdt = objcl.DisplayHSNDc(objco);
            //Mdt.Columns["HSNCode"].ColumnName = "HSN Code";
            //Mdt.Columns["qty"].ColumnName = "Qty";
            //Mdt.Columns["msval"].ColumnName = "Total Amount";


            using (StringWriter sw = new StringWriter())
            {
                using (HtmlTextWriter hw = new HtmlTextWriter(sw))
                {
                    StringBuilder sb = new StringBuilder();

                    //Generate Invoice (Bill) Header.



                    sb.Append("<table width='100%' cellspacing='0' cellpadding='2' border = '1'>");
                    sb.Append("<tr><td align='center' style='background-color: #18B5F0;color:white'; colspan = '2'><b>Delivery Challan</b></td></tr>");
                    sb.Append("</table>");




                    sb.Append("<table width='100%' border = '1' >");

                    sb.Append("<tr align='left'>");
                    sb.Append("<td>");


                    sb.Append("<p style='font-size:15px;font-weight:bold;margin-left:2cm';>");
                    sb.Append(_compName);
                    sb.Append("</p>");

                    sb.Append("<p style='font-size:10px;margin-left:2cm';>");
                    sb.Append(_dealer);
                    sb.Append("</p>");

                    sb.Append("</br>");

                    sb.Append("<p style='font-size:10px;'>");
                    sb.Append(_address);
                    sb.Append("</p>");

                    sb.Append("<p style='font-size:10px;'>");
                    sb.Append(_area);

                    sb.Append(", ");

                    sb.Append(_city);

                    sb.Append("-");
                    sb.Append(_pincode);
                    sb.Append("</p>");

                    sb.Append("</br>");


                    sb.Append("<p style='font-size:10px;'>");
                    sb.Append("<b> Ph: </b>");
                    sb.Append(_cno);

                    sb.Append("<b> Email: </b>");
                    sb.Append(_email);
                    sb.Append("</p>");




                    //sb.Append("<tr>");
                    sb.Append("<td align='center'>");


                    sb.Append("<p style='font-size:10px;text-align:left;'>");
                    sb.Append("<b>Tin No: </b>");
                    sb.Append(_tinno);
                    sb.Append("</p>");

                    sb.Append("<p style='font-size:10px;text-align:left;'>");
                    sb.Append("<b>GST No: </b>");
                    sb.Append(_gstno);
                    sb.Append("</p>");



                    sb.Append(" </td>");

                    sb.Append("</tr>");



                    sb.Append("<tr><td colspan = '2'></td></tr>");
                    sb.Append("<tr><td>");
                    sb.Append("<p style='font-size:10px;'>");
                    sb.Append("<b>DC No: </b>");
                    sb.Append(DcNo);
                    sb.Append("</p>");

                    sb.Append("<p style='font-size:10px;'>");
                    sb.Append("<b>Qty: </b>");
                    sb.Append(sum);
                    sb.Append("</p>");

                    sb.Append("<p style='font-size:10px;'>");
                    sb.Append("<b>Amount: </b>");
                    sb.Append(dt.Compute("sum(IssuedAmount)", ""));
                    sb.Append("</p>");
                    sb.Append("<p style='font-size:10px;'>");
                    sb.Append("<b>Esugam No: </b>");
                    sb.Append(EsNo);
                    sb.Append("</p>");

                    sb.Append("</td><td align = 'center'>");
                    sb.Append("<p style='font-size:10px;text-align:left;'>");
                    sb.Append("<b>Date: </b>");
                    sb.Append(DateTime.UtcNow.AddHours(5.5).ToString("dd-MM-yyyy HH:mm tt", System.Globalization.CultureInfo.InvariantCulture));
                    sb.Append("</p>");
                    sb.Append("<p style='font-size:10px;text-align:left;'>");
                    sb.Append("<b>To: </b>");
                    sb.Append(person);
                    sb.Append("</p>");

                    sb.Append("<p style='font-size:10px;text-align:left;'>");
                    sb.Append("<b>Area: </b>");
                    sb.Append(_city);
                    sb.Append("</p>");

                    sb.Append(" </td></tr>");




                    sb.Append("<tr><td align='left' colspan = '2'><p style='font-size:8px;'><b>Note: </b> Stock issued to line sales and accounted after returning same day or next day.</p></td></tr>");


                    sb.Append("</table>");

                    //sb.Append("<br />");

                    //Generate Invoice (Bill) Items Grid.
                    sb.Append("<table border = '1' style ='font-size:12px;'>");
                    sb.Append("<tr>");



                    foreach (DataColumn column in dt.Columns)
                    {
                        sb.Append("<th style = 'background-color: #D20B0C;color:#ffffff;font-size:12px;'>");
                        sb.Append("<p style='font-size:12px;'>");
                        sb.Append(column.ColumnName);
                        sb.Append("</p>");
                        sb.Append("</th>");
                    }
                    sb.Append("</tr>");
                    foreach (DataRow row in dt.Rows)
                    {
                        sb.Append("<tr>");
                        foreach (DataColumn column in dt.Columns)
                        {
                            sb.Append("<td>");
                            sb.Append("<p style='font-size:12px;'>");
                            sb.Append(row[column]);
                            sb.Append("</p>");
                            sb.Append("</td>");
                        }
                        sb.Append("</tr>");
                    }
                    sb.Append("<tr><td align = 'right' colspan = '");
                    sb.Append(dt.Columns.Count - 2);
                    sb.Append("'>Total</td>");

                    sb.Append("<td>");
                    sb.Append(sum);
                    sb.Append("</td>");

                    sb.Append("<td>");
                    sb.Append(dt.Compute("sum(IssuedAmount)", ""));
                    sb.Append("</td>");
                    sb.Append("</p></tr></table>");


                    

                    //Footer of DC

                    sb.Append("<table width='100%' >");
                    sb.Append("<tr><td></td></tr>");
                    sb.Append("<tr><td><p style='font-size:8px;'><b>In Words: </b>");

                    sb.Append(_words);
                    sb.Append("</td>");
                    sb.Append("</tr></table>");


                    sb.Append("<table width='100%'>");

                    sb.Append("</td><td align = 'right'  colspan = '2'><p style='font-size:10px;text-align:right'><b>for ");
                    sb.Append(_compName);
                    sb.Append("</b></p>");
                    sb.Append("</td>");
                    sb.Append("</tr>");

                    sb.Append("<br/>");
                    sb.Append("<br/>");
                    sb.Append("<br/>");

                    sb.Append("</td><td align = 'right'  colspan = '2'><p style='font-size:8px;text-align:right'><b>INCHARGE</b></p></td></tr>");

                    sb.Append("</table>");

                 

                   



                    //Export HTML String as PDF.
                    StringReader sr = new StringReader(sb.ToString());
                    iTextSharp.text.Document pdfDoc = new iTextSharp.text.Document(iTextSharp.text.PageSize.A4, 10f, 10f, 10f, 0f);
                    iTextSharp.text.html.simpleparser.HTMLWorker htmlparser = new iTextSharp.text.html.simpleparser.HTMLWorker(pdfDoc);
                    PdfWriter writer = PdfWriter.GetInstance(pdfDoc, Response.OutputStream);

                    

                    pdfDoc.Open();
                    htmlparser.Parse(sr);
                    pdfDoc.Close();


                    Response.ContentType = "application/pdf";
                    //Response.AddHeader("content-disposition", "attachment;filename=DC" + DcNo + ".pdf");
                    Response.AddHeader("content-disposition", "attachment;filename=DcNo" + DcNo + "_Name:" + person + ".pdf");
                    Response.Cache.SetCacheability(HttpCacheability.NoCache);
                    Response.Write(pdfDoc);



                    Response.End();

                   
                }
                 
            }

           
            ScriptManager.RegisterStartupScript(this, this.GetType(), "Message", "alert('DC Generated for the Sales Person : " + ddlsp.SelectedItem.Text + " ');", true);
        }