How to create recurring profile with express checkout using SDK

protected void Page_Load(object sender, EventArgs e)
        {
            if (Request.QueryString.Count != 0)
            {
                if (Request.QueryString["token"] != null)
                {
                    if (Request.QueryString["token"] == "")
                    {
                        lMsg.Text = "Transction has been canceled";
                    }
                    else  lMsg.Text= RecuringPayments();
                }
                else
                {
                    ExpressCheckOut();
                }
            }
        }
        #region Paypal Express Checkout And Create Recuring Profile
        public void ExpressCheckOut()
        {

            NameValueCollection formdata = Request.QueryString ;
            LOGIN_USER user = null;
            CreateUser(formdata, ref user, "P");
            PayPalTenderRecuring(user);
            //Session["Luser"] = user;
        }
        private static void CreateUser(NameValueCollection formdata, ref LOGIN_USER user, string Tender)
        {
            using (var db = new WooskieDBInstance().WooskieDB)
            {
                try
                {
                    db.Connection.Open();
                    db.Transaction = db.Connection.BeginTransaction();
                    user = new LOGIN_USER();
                    user.USERNAME = formdata.Get(8);
                    user.STATUS = 0;
                    user.CreateDate = DateTime.UtcNow;
                    user.PASS = WooskieLibrary.Business.ConvertUtil.generatePassword(6);
                    user.Person = new Wooskie.Business.Person
                    {
                        EMAIL_ADDRESS = formdata.Get(7),
                        FIRSTNAME = formdata.Get(0),
                        LASTNAME = formdata.Get(1),
                        PERSONTYPEID = 2,
                        COMPANY_NAME = formdata.Get(0) + ' ' + formdata.Get(1),
                        ISACTIVE = false,
                        PERSON_ADDRESS = new PERSON_ADDRESS
                        {
                            ADDRESS1 = formdata[2],
                            ADDRESS2 = formdata[3],
                            CITY = formdata[4],
                            COUNTRY = formdata[9],
                            STATE = formdata[5],
                            ZIPCODE = formdata["ctl00$MainContent$txtZipcode"],


                        },
                        CLIENT_BILLING_INFO = new CLIENT_BILLING_INFO
                        {
                            BILLING_EMAIL = formdata[17],
                            PAYMENT_TYPE = Tender.Equals("P") ? 2 : Convert.ToInt32(formdata[11]),
                            CARD_NO = formdata[13],
                            CVV2 = GetBytes(formdata["ctl00$MainContent$txtCVV"]),
                            EXPIRED = formdata["ctl00$MainContent$ddlExpMonth"] + formdata["ctl00$MainContent$ddlExpYear"].Substring(2, 2)
                        }
                    };
                    db.LOGIN_USERs.InsertOnSubmit(user);
                    db.SubmitChanges();
                    //Commit Transaction
                    db.Transaction.Commit();


                }
                catch
                {
                    //Roleback Transaction
                    db.Transaction.Rollback();
                }
            }
        }
        private void PayPalTenderRecuring(LOGIN_USER Luser)
        {

            // Create the Data Objects.
            // Create the User data object with the required user details.
            UserInfo User = new UserInfo(
                ConfigurationManager.AppSettings["USER"],
                ConfigurationManager.AppSettings["VENDOR"],
                "PayPal", ConfigurationManager.AppSettings["PWD"]
                );
            // Create the Payflow  Connection data object with the required connection details.
            // The PAYFLOW_HOST property is defined in the App config file.
            PayflowConnectionData Connection = new PayflowConnectionData();
            // Create a new Invoice data object with the Amount, Billing Address etc. details.
            Invoice Inv = new Invoice();
            // Set Amount.
            Currency Amt = new Currency(new decimal(1), "USD");
            Inv.Amt = Amt;
            Inv.InvNum = "INV" + WooskieLibrary.Business.ConvertUtil.generateInvoiceNo();
            Inv.CustRef = Luser.Person.EMAIL_ADDRESS;
            Inv.Comment1 = "Order Number: " + Inv.InvNum;
            Inv.Comment2 = "Customer Email: " + Luser.Person.EMAIL_ADDRESS;
            // Set the Billing Address details.
            // Only Street and Zip are set below for AVS check; however, you would probably want
            // to include full name and address information.
            BillTo Bill = new BillTo();
            Bill.BillToStreet = Luser.Person.PERSON_ADDRESS.ADDRESS1 + ',' + Luser.Person.PERSON_ADDRESS.ADDRESS2;
            Bill.BillToZip = Luser.Person.PERSON_ADDRESS.ZIPCODE;
            Bill.BillToCountry = Luser.Person.PERSON_ADDRESS.COUNTRY;
            // Set the BillTo object into invoice.
            Inv.BillTo = Bill;

            CustomerInfo CustInfo = new CustomerInfo();
            CustInfo.CustCode = "TEST";    // Customer Code
            CustInfo.CustId = "CustId";
            Inv.CustomerInfo = CustInfo;

            string msg = "";

            ExpressCheckoutRequest currRequest = new ECSetRequest("http://localhost:9275/PaypalCheckout", "http://localhost:9275/PaypalCheckout");
            PayPalTender currTender = new PayPalTender(currRequest);
            SaleTransaction currTransaction = new SaleTransaction(User, Connection, Inv, currTender, PayflowUtility.RequestId);
            Response Resp = currTransaction.SubmitTransaction();
            if (Resp != null)
            {
                TransactionResponse TrxnResponse = Resp.TransactionResponse;
                ExpressCheckoutResponse eResponse = Resp.ExpressCheckoutSetResponse;
                if ((TrxnResponse != null) && (eResponse != null))
                {
                    if (TrxnResponse.Result == 0)
                    {
                        HttpContext.Current.Session["PaypalToken"] = eResponse.Token;
                        HttpContext.Current.Session["Luser"] = Luser;
                        HttpContext.Current.Response.Redirect("https://www.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=" + eResponse.Token);
                        msg = String.Empty;
                    }
                    else
                        msg = TrxnResponse.RespMsg;
                }
                else
                    msg = Resp.ResponseString;
            }
            msg = "transaction error";


        }
        string RecuringPayments()
        {
            string PayerID = Request.QueryString["PayerID"];
            LOGIN_USER Luser = (LOGIN_USER)HttpContext.Current.Session["Luser"];
            UserInfo User = new UserInfo(
                 ConfigurationManager.AppSettings["USER"],
                 ConfigurationManager.AppSettings["VENDOR"],
                 "PayPal", ConfigurationManager.AppSettings["PWD"]
                 );
            // Create the Payflow  Connection data object with the required connection details.
            // The PAYFLOW_HOST property is defined in the App config file.
            PayflowConnectionData Connection = new PayflowConnectionData();
            // Create a new Invoice data object with the Amount, Billing Address etc. details.
            Invoice Inv = new Invoice();
            // Set Amount.
            Currency Amt = new Currency(new decimal(1), "USD");
            Inv.Amt = Amt;
            Inv.InvNum = "INV" + WooskieLibrary.Business.ConvertUtil.generateInvoiceNo();
            Inv.CustRef = Luser.Person.EMAIL_ADDRESS;
            Inv.Comment1 = "Order Number: " + Inv.InvNum;
            Inv.Comment2 = "Customer Email: " + Luser.Person.EMAIL_ADDRESS;
            // Set the Billing Address details.
            // Only Street and Zip are set below for AVS check; however, you would probably want
            // to include full name and address information.
            BillTo Bill = new BillTo();
            Bill.BillToStreet = Luser.Person.PERSON_ADDRESS.ADDRESS1 + ',' + Luser.Person.PERSON_ADDRESS.ADDRESS2;
            Bill.BillToZip = Luser.Person.PERSON_ADDRESS.ZIPCODE;
            Bill.BillToCountry = Luser.Person.PERSON_ADDRESS.COUNTRY;
            // Set the BillTo object into invoice.
            Inv.BillTo = Bill;

            CustomerInfo CustInfo = new CustomerInfo();
            CustInfo.CustCode = Luser.USERNAME;    // Customer Code
            CustInfo.CustId = "CustId" + Luser.USERID;
            Inv.CustomerInfo = CustInfo;
           
            ExpressCheckoutRequest currRequest = new ECDoRequest(HttpContext.Current.Session["PaypalToken"].ToString(),PayerID);
            PayPalTender currTender = new PayPalTender(currRequest);

            SaleTransaction currTransaction = new SaleTransaction(User, Connection, Inv, currTender, PayflowUtility.RequestId);
            Response Resp = currTransaction.SubmitTransaction();
            if (Resp != null)
            {
                TransactionResponse TrxnResponse = Resp.TransactionResponse;
                ECDoResponse eResponse = Resp.ExpressCheckoutDoResponse;
                if ((TrxnResponse != null) && (eResponse != null))
                {
                    if (TrxnResponse.Result == 0)
                    {
                        
                        RecurringInfo RecurInfo = new RecurringInfo();
                        RecurInfo.Start = DateTime.Now.ToString("MMddyyyy");
                        RecurInfo.ProfileName = "Requring_Profile@" + Luser.USERNAME; // User provided Profile Name.
                        RecurInfo.PayPeriod = "MONT";
                        RecurInfo.Term = 12;
                       
                        RecurringAddTransaction RecurringTrans = new RecurringAddTransaction(User, Connection, Inv, currTender, RecurInfo, PayflowUtility.RequestId);
                        RecurringTrans.OrigId = eResponse.BAId;
                        Response RecurringResp = RecurringTrans.SubmitTransaction();
                        if (RecurringResp != null)
                        {
                            TrxnResponse = RecurringResp.TransactionResponse;
                            RecurringResponse RecurResponse = RecurringResp.RecurringResponse;
                            if ((TrxnResponse != null) && (RecurResponse != null))
                            {
                                if (TrxnResponse.Result == 0)
                                {
                                    //CompaniesManager.setProfileID(currCompany.companyID, RecurResponse.ProfileId);
                                    //CompaniesManager.updateAccountExpireDate(currCompany.companyID, startBilling);
                                    SendMailToClient(Luser.Person.EMAIL_ADDRESS);
                                    return String.Empty;
                                }
                                else
                                {
                                    return TrxnResponse.Result + " " + TrxnResponse.RespMsg + RecurResponse.TrxRespMsg;
                                }
                            }
                            else
                                return Resp.ResponseString;
                        }
                        return "transaction error";
                    }
                    else
                        return TrxnResponse.RespMsg;
                }
                else
                    return Resp.ResponseString;
            }
            return "transaction error";
        }

        private void SendMailToClient(string p)
        {
            SmtpClient client = new SmtpClient("184.173.9.173");
            client.Credentials = new System.Net.NetworkCredential("user", "password");
            MailAddress mailFrom = new MailAddress("mymail@server.com");
            MailAddress mailTo = new MailAddress("yourmail@server.com");
            MailAddress mailReply = new MailAddress("mymail@server.com");
            MailMessage message = new MailMessage(mailFrom, mailTo);
            message.Body = "This is a test message.";
            message.Subject = "test message";
            message.SubjectEncoding = System.Text.Encoding.UTF8;
            message.BodyEncoding = System.Text.Encoding.UTF8;
            client.Send(message);
        }

        static byte[] GetBytes(string str)
        {
            byte[] bytes = new byte[str.Length * sizeof(char)];
            System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
            return bytes;
        }
        static string GetString(byte[] bytes)
        {
            char[] chars = new char[bytes.Length / sizeof(char)];
            System.Buffer.BlockCopy(bytes, 0, chars, 0, bytes.Length);
            return new string(chars);
        }
        #endregion
    }