public ActionResult login(logincastle_3 lg)

        {
            try {
                if (ModelState.IsValid)
                {
                    if ((lg.username == "primeadmin") && (lg.password == "Access@333"))
                    {
                        Session["check"] = "primeadmin";
                        return(RedirectToAction("adminHome"));
                    }
                    else if ((lg.username == "cashieradmin") && (lg.password == "Cashier@333"))
                    {
                        Session["check"] = "cashier";
                        return(RedirectToAction("cashierHome"));
                    }
                    else
                    {
                        Response.Write("<script>alert('invalid password or username');</script>");
                        return(View());
                    }
                }
                else
                {
                    return(View("Error"));
                }
            }
            catch (Exception e)
            {
                return(View("Error"));
            }
        }
        public ActionResult login()

        {
            logincastle_3 lg = new logincastle_3();

            return(View(lg));
        }