AccountController.cs

  [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult CreateUser(UserModel userModel)
        {
            if (ModelState.IsValid)
            {
                IUserInterface userService = new UserBusinessLayer("sqlConn");

                userService.CreateUser(new UserEntity()
                    {
                        username = userModel.username,
                        password = userModel.password,
                        email = userModel.email
                    });

                    return RedirectToAction("ListUsers");
            }

                return View();
        }