public async Task <IActionResult> Payment(Payment payment) { ViewBag.Templates = await GetTemplates(); ViewBag.BankCodes = DataHandler.GetBankCodes(); if (ModelState.IsValid) { User user = null; string userId = HttpContext.Session.GetString("UserId"); SessionHandler.GetUser(userId, out user); if (user.Money < payment.Amount) { ViewBag.Insufficient = "Insufficient money."; return(View(payment)); } if (payment.DestBank == 666 && !_context.AccountExist(payment.DestAccount)) { return(View("NoAccount", payment)); } int t = TransactionHandler.NewPayment(user, payment); HttpContext.Session.SetInt32("Payment", t); return(View("PaymentConfirm", payment)); } ViewBag.ErrMsg = "Values are not valid."; return(View(payment)); }