public ActionResult LogOn(LogOnViewModel model, string returnUrl)
        {
            if (this.ModelState.IsValid)
            {
                if (SimpleMembership.ValidateUser(model.UserName, model.Password))
                {
                    FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe);
                    FormsAuthentication.RedirectFromLoginPage(model.UserName, true);
                    if (this.Url.IsLocalUrl(returnUrl))
                    {
                        return Redirect(returnUrl);
                    }
                    else
                    {
                        return RedirectToAction("Index", "Home");
                    }
                }
            }

            // If we got this far, something failed, redisplay form
            this.ModelState.AddModelError("", "Incorrect user name or password.");
            return View(model);
        }
        public ActionResult LogOn()
        {
            LogOnViewModel model = new LogOnViewModel();

            return View(model);
        }