public ActionResult RegisteredStudent(Regestration studentRegestration)
        {
            if (ModelState.IsValid)
            {
                CardDAO Card_DAO = new CardDAO();
                if (Card_DAO.ISExsistCardDate(studentRegestration.CardNumber))
                {
                    RegestrationDAO Registrator = new RegestrationDAO();
                    if (Registrator.IsCardUnsoldAndUnRegisteredWhileRegitered(studentRegestration.CardNumber))
                    {
                        Registrator.RegisterStudent(studentRegestration);
                        return View(studentRegestration);

                    }
                    else
                    {
                        ModelState.AddModelError("", "The Card is already sold or the card number is invalid.");
                        return View("RegisterStudent");
                    }

                }
                else
                {
                    ModelState.AddModelError("", "There is no card with this card number.Please give a valid card number");
                    return View("RegisterStudent");
                }

            }
            else
            {
                ModelState.AddModelError("", "It seems it's lacking required information");
                return View("RegisterStudent");
            }
        }
        public ActionResult AddCard(SearchStudent studentCardNumber)
        {
            if (ModelState.IsValid)
            {
                if (Session["StudentId"] != null)
                {

                    CardDAO Card_DAO = new CardDAO();
                    if (Card_DAO.ISExsistCardDate(studentCardNumber.CardNumber))
                    {
                        RegestrationDAO Registrator = new RegestrationDAO();
                        if (Registrator.IsCardUnsoldAndUnRegisteredWhileRegitered(studentCardNumber.CardNumber))
                        {
                            int StudentId = (Int32)Session["StudentId"];
                            Registrator.UpdateCardsTableWithStudentId(studentCardNumber.CardNumber, StudentId);
                            ModelState.AddModelError("", "The New Card is added successfully .Please check student information by searching.");
                            return View("SearchStudent");
                        }
                        else
                        {
                            ModelState.AddModelError("", "The Card is already sold,Please give an unsold card number.");
                            return View("SearchStudent");
                        }
                    }
                    else
                    {
                        ModelState.AddModelError("", "There is no card with this card number.Please give a valid card number.");
                        return View("SearchStudent");

                    }

                }
                else
                {
                    ModelState.AddModelError("", "Sorry Student information is not found.");
                    return View("SearchStudent");
                }

            }
            else
            {

                ModelState.AddModelError("", "Sorry Student information is not found.");
                return View("SearchStudent");
            }
        }