protected void Button1_Click(object sender, EventArgs e)
        {
            try
            {
                cls_singup_user obj = new cls_singup_user(0, "", "", "", "");

                obj.ID_data       = Int32.Parse(Session["Idp"].ToString());
                obj.Number        = txt_credit_card.Text;
                obj.Type          = DDL_type.SelectedValue;
                obj.Date_end      = DDL_1.SelectedValue + "/" + DDL2.SelectedValue;
                obj.Code_security = txt_code_security.Text;
                obj.Add_2();


                //Mostrara un mensaje en caso de ser exitoso la operación
                Response.Write("Successful");
                //Se redirecciona al login
                Session["Email"] = "";
                Session["Idp"]   = "";
                Response.Redirect("~/Web_Pages/User/page_login_user.aspx");
            }
            catch (Exception ex)
            {
                // Mostrara un mensaje en caso de no completar la operación
                Response.Write("ERROR 4004  " + ex);
            }
        }