protected String getHTMLCode()
    {
        try
        {
            int eventId = int.Parse(Session["eventId"].ToString());
            int groupId = int.Parse(Session["GroupId"].ToString());
            int UserID = getUserLogin().UserId;
            string requireTime = Session["RequireTime"]+"";

            eventBus = new EventBUS();
            DataTable tblEvent = eventBus.GetByID(eventId);

            String visibleField = "";
            String rowVisible = "";
            Hashtable htVisibleField = getVisibleField();
            foreach (DictionaryEntry entry in htVisibleField)
            {
                visibleField += entry.Key+" ";
                rowVisible += "<tr>\n";
                rowVisible += String.Format("<td>{0}</td>\n", entry.Value);
                rowVisible +="</tr>";
                rowVisible += "<tr>\n";
                rowVisible += String.Format("<td><input name=\"{0}\" id=\"{0}\" type=\"text\" size=\"40\" /></td>\n", entry.Key);
                rowVisible += "</tr>";
            }
            rowVisible += "<tr align=\"center\">\n";
            rowVisible += "<td><input name=\"btnSubmit\" id=\"btnSubmit\" type=\"submit\" value=\"Đăng ký\" /></td>\n";
            rowVisible += "</tr>\n";

            String rs = "";
            rs += "<form id=\"form1\" method=\"post\" action=\"http://emailmarketing.1onlinebusinesssystem.com/webapp/page/backend/register-event.aspx\" accept-charset=\"UTF-8\">\n";
            //rs += "<form id=\"form1\" method=\"post\" action=\"http://localhost:40025/FAMail_Back/webapp/page/backend/register-event.aspx\" accept-charset=\"UTF-8\">\n";
            rs += String.Format("<input name=\"UserId\" id=\"UserId\" type=\"hidden\" value=\"{0}\" />\n", UserID);
            rs += String.Format("<input name=\"eventId\" id=\"eventId\" type=\"hidden\" value=\"{0}\" />\n", eventId);
            rs += String.Format("<input name=\"visibleField\" id=\"visibleField\" type=\"hidden\" value=\"{0}\" />\n", visibleField.Trim());
            rs += String.Format("<input name=\"groupId\" id=\"groupId\" type=\"hidden\" value=\"{0}\" />\n", groupId);
            rs += String.Format("<input name=\"startDate\" id=\"startDate\" type=\"hidden\" value=\"{0}\" />\n", tblEvent.Rows[0]["StartDate"]);
            rs += String.Format("<input name=\"endDate\" id=\"endDate\" type=\"hidden\" value=\"{0}\" />\n", tblEvent.Rows[0]["EndDate"]);
            rs += String.Format("<input name=\"requireTime\" id=\"requireTime\" type=\"hidden\" value=\"{0}\" />\n", requireTime.Trim());
            rs += "<table>\n";
            rs += rowVisible;
            rs += "</table>\n";
            rs += "</form>\n";
            return rs;
        }
        catch (Exception)
        {

            return null;
        }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            string eventId, name, email, company, phone, secondPhone, address1,
                address2, city, province, country, zipcode, fax, groupId,
                visibleField, gender, requireTime, UserID, Job;

            eventId = Request.Params["eventId"];
            name = Request.Params["Name"];
            if (name == null || name == "")
            {
                name = "";
            }
            email = Request.Params["Email"];
            if (email == null || email == "")
            {
                Session["Error"] = "Vui lòng kiểm tra lại thông tin đăng ký !";
                Response.Redirect("event-register-error.aspx", false);
                return;
            }
            gender = Request.Params["Gender"];
            if (gender == null || gender == "")
            {
                gender = "Nam";
            }
            Job = Request.Params["Job"];
            if (Job == null || Job == "")
            {
                Job = "";
            }
            company = Request.Params["Company"];
            if (company == null || company == "")
            {
                company = "";
            }
            phone = Request.Params["Phone"];
            if (phone == null || phone == "")
            {
                phone = "";
            }
            secondPhone = Request.Params["SecondPhone"];
            if (secondPhone == null || secondPhone == "")
            {
                secondPhone = "";
            }
            address1 = Request.Params["Address1"];
            if (address1 == null || address1 == "")
            {
                address1 = "";
            }
            address2 = Request.Params["Address2"];
            if (address2 == null || address2 == "")
            {
                address2 = "";
            }
            city = Request.Params["City"];
            if (city == null || city == "")
            {
                city = "";
            }
            province = Request.Params["Province"];
            if (province == null || province == "")
            {
                province = "";
            }
            country = Request.Params["Country"];
            if (country == null || country == "")
            {
                country = "";
            }
            zipcode = Request.Params["ZipCode"];
            if (zipcode == null || zipcode == "")
            {
                zipcode = "";
            }
            fax = Request.Params["Fax"];
            if (fax == null || fax == "")
            {
                fax = "";
            }

            requireTime = Request.Params["requireTime"];

            groupId = Request.Params["groupId"];
            UserID = Request.Params["UserID"];
            //startDate = Request.Params["startDate"];
            //endDate = Request.Params["endDate"];
            visibleField = Request.Params["visibleField"];
            string[] arrVisible = visibleField.Trim().Split(' ');

            eventDetailBus = new EventDetailBUS();
            eventBus = new EventBUS();

            EventDetailDTO eventDetailDto = new EventDetailDTO();
            eventDetailDto.EventId = int.Parse(eventId);
            eventDetailDto.FullName = name;
            eventDetailDto.EmailID = email;
            eventDetailDto.Job = Job;
            eventDetailDto.Company = company;
            eventDetailDto.Phone = phone;
            eventDetailDto.SecondPhone = secondPhone;
            eventDetailDto.Address = address1;
            eventDetailDto.Address2 = address2;
            eventDetailDto.City = city;
            eventDetailDto.Province = province;
            eventDetailDto.Country = country;
            eventDetailDto.ZipCode = zipcode;
            eventDetailDto.Fax = fax;
            eventDetailDto.CreateDate = DateTime.Now;
            eventDetailDto.GroupId = int.Parse(groupId);
            eventDetailDto.CountReceivedMail = 0;
            eventDetailDto.LastReceivedMail = DateTime.Now;

            // Kiem tra dieu kien
            // Check thời gian của sự kiện
            DataTable tblEvent = eventBus.GetByID(int.Parse(eventId));
            if (tblEvent.Rows.Count > 0)
            {
                if (requireTime.Equals("true"))
                {
                    if (DateTime.Parse(tblEvent.Rows[0]["StartDate"].ToString()) <= DateTime.Now
                            && DateTime.Now <= DateTime.Parse(tblEvent.Rows[0]["EndDate"].ToString()))
                    {
                    }
                    else
                    {
                        Session["Error"] = "Thời hạn đăng ký đã hết, vui lòng chờ sự kiện kế tiếp. Cảm ơn !";
                        Response.Redirect("event-register-error.aspx", false);
                        return;
                    }
                }

            }

            // Mot email chi dang ky duoc mot event
            DataTable checkEmail = eventDetailBus.GetByIdAndEmail(int.Parse(eventId), email);
            if (checkEmail.Rows.Count > 0)
            {
                Session["Error"] = "Email đã được sử dụng. Vui lòng chọn email khác !";
                Response.Redirect("event-register-error.aspx", false);
                return;
            }

            // Gui mail
            // Lay thong tin event
            eventBus = new EventBUS();
            DataTable tbEvent = eventBus.GetByID(int.Parse(eventId));
            //get mail config
            if (tbEvent.Rows.Count > 0)
            {
                DataRow rEvent = tbEvent.Rows[0];
                mailConfigBus = new MailConfigBUS();
                DataTable tbMailConfig = mailConfigBus.GetByID(int.Parse(tbEvent.Rows[0]["ConfigId"].ToString()));

                // Them khach hang vao bang event detail
                eventDetailBus.tblEventDetail_insert(eventDetailDto);

                try
                {
                    // Them khach hang vao danh sach khach hang
                    customerBus = new CustomerBUS();
                    DataTable tblCustomer = customerBus.GetByEmail(email, int.Parse(UserID));
                    int customerId = 0;
                    if (tblCustomer.Rows.Count == 0)
                    {
                        CustomerDTO customerDto = new CustomerDTO();
                        customerDto.Name = name;
                        customerDto.Gender = gender;
                        customerDto.BirthDay = DateTime.Now;
                        customerDto.Email = email;
                        customerDto.Phone = phone;
                        customerDto.SecondPhone = secondPhone;
                        customerDto.Address = address1;
                        customerDto.Fax = fax;
                        customerDto.Company = company;
                        customerDto.Job = Job;
                        customerDto.City = city;
                        customerDto.Province = province;
                        customerDto.Country = country;
                        customerDto.Type = "0";
                        customerDto.UserID = int.Parse(UserID);
                        customerDto.createBy = int.Parse(UserID);
                        customerDto.AssignTo = int.Parse(UserID);

                        customerId = customerBus.tblCustomer_insert(customerDto);
                        this.SendMail(customerDto);
                        logs_info.Info("Email Register: " + email);
                    }
                    else
                    {
                        customerId = int.Parse(tblCustomer.Rows[0]["Id"].ToString());
                    }

                    // Them khach hang vao detail group.
                    dgBus = new DetailGroupBUS();
                    DataTable tblDetailGroup = dgBus.GetByID(int.Parse(groupId), customerId);
                    if (tblDetailGroup.Rows.Count <= 0)
                    {
                        DetailGroupDTO dgDto = new DetailGroupDTO();

                        dgDto.GroupID = int.Parse(groupId);
                        dgDto.CustomerID = customerId;
                        dgDto.CountReceivedMail = 0;
                        dgDto.LastReceivedMail = DateTime.Now;
                        dgBus.tblDetailGroup_insert(dgDto);
                    }
                    eventBus.tblEventCustomer_Insert(customerId, eventId);

                }
                catch (Exception)
                {
                }

                if (tbMailConfig.Rows.Count > 0)
                {
                    DataRow rConfig = tbMailConfig.Rows[0];
                    ProcessSendEmail process = new ProcessSendEmail();

                    // Xu ly them loi chao trong noi dung mail
                    string body = rEvent["Body"].ToString();
                    string welcome = (name == "" || name == null) ? email : name;

                    // Replace with [khachhang] or [email]
                    body = body.Replace("[khachhang]", welcome);
                    body = body.Replace("[email]", email);

                    bool rsSend = true;

                    //rsSend = process.SendMail(rEvent["Subject"].ToString(),
                    //    body, rConfig["Server"].ToString(), int.Parse(rConfig["Port"].ToString()),
                    //    rConfig["Email"].ToString(), rConfig["Password"].ToString(), rConfig["Name"].ToString(),
                    //    email, rConfig["username"].ToString(),bool.Parse(rConfig["isSSL"].ToString()));

                    if (rsSend)
                    {
                        // chuyen den trang success
                        string url = rEvent["ResponeUrl"].ToString();
                        if (url.Equals("Default"))
                        {
                            Response.Redirect("event-register-success.aspx", false);
                        }
                        else
                        {
                            Response.Redirect(url, false);
                        }
                    }
                    else
                    {
                        Session["Error"] = "Bạn đã đăng ký không thành công.";
                        Response.Redirect("event-register-error.aspx", false);
                    }

                }
                else
                {
                    Session["Error"] = "Bạn đã đăng ký không thành công.";
                    Response.Redirect("event-register-error.aspx", false);
                }

            }

        }
        catch (Exception ex)
        {
            Session["Error"] = "Một số lỗi hệ thống đã xảy ra. Vui lòng kiểm tra lại thông tin !\n" + ex.Message;
            Response.Redirect("event-register-error.aspx");
        }
    }