ITimeU.Controllers.AthleteController.Create C# (CSharp) Method

        public ActionResult Create(string txtFirstName, string txtLastName, string txtEmail, string txtPostalAddress, string txtPostalCode, string txtCity,
                                    string txtPhoneNumber, string genderId, string birthdateId, string txtStartNumber, string clubId, string classId)
        {
            int startnum = 0;
                int.TryParse(txtStartNumber, out startnum);
            if (!IsValidInput(txtFirstName,txtLastName,txtEmail,txtStartNumber,clubId) ||
                AthleteModel.StartnumberExistsInDb(startnum))
            {
                ViewBag.IsValidInput = false;
                ViewBag.IsAthleteCreated = false;
                setViewData();
                return View("Index", ClubModel.GetAll());
            }
            else
            {
                int birthdate = 0;
                int gender = 0, athleteclubid = 0, athleteclassid = 0;

                int.TryParse(genderId, out gender);
                int.TryParse(birthdateId, out birthdate);
                int.TryParse(clubId, out athleteclubid);
                int.TryParse(classId, out athleteclassid);

                Gender getGender = getGenderNameById(gender);
                string gendername = "";
                if (getGender != null)
                {
                    gendername = getGender.Name;
                }
                BirthDate getBirthday = getBirthDateById(birthdate);
                int birthyear = 0;
                if (getBirthday != null)
                {
                    birthyear = getBirthday.BirthYear;
                }

                ClubModel athclubobj = null;
                if (athleteclubid != 0)
                {
                    athclubobj = new ClubModel(athleteclubid);
                }

                AthleteClassModel athclassobj = null;
                if (athleteclassid != 0)
                {
                    athclassobj = new AthleteClassModel(athleteclassid);
                }

                AthleteModel athlete = new AthleteModel(txtFirstName, txtLastName, txtEmail, txtPostalAddress,
                                    txtPostalCode, txtCity, gendername, birthyear, txtPhoneNumber, startnum, athclubobj, athclassobj);
                athlete.SaveToDb();
                return RedirectToAction("ResetFormField");
            }
        }