public ActionResult Create([Bind(Include = "PaymentTypeID,Description,DurationInMonths,Status,ActivityID")] PaymentType paymentType)
        {
            if (ModelState.IsValid)
            {
                paymentTypeRepository.InsertPaymentType(paymentType);
                paymentTypeRepository.Save();
                return(RedirectToAction("Index"));
            }

            ViewBag.ActivityID = new SelectList(activityRepository.GetActivities(), "ActivityID", "Name", paymentType.ActivityID);
            return(View(paymentType));
        }