public IActionResult confirmPayment(int fee, int department) { Contract contractInfo = db.Contract.Where(c => c.DepartmentId == department).First(); Fee feePayment = db.Fee.Where(f => f.Id == fee && f.ContractId == contractInfo.Id).First(); Renter RenterInfo = db.Renter.Where(r => r.Id == contractInfo.RenterId).First(); feePayment.PaymentDate = DateTime.Now; db.SaveChanges(); EmailConfig.SendPaymentTicket(RenterInfo.Email); return(RedirectToAction("Department", new{ id = department })); }