<system.web>

<authentication mode="Forms">

      <!-- 如果验证失败就返回URL的指定界面，设置cookie的时间和名字-->

      <forms name="Roles" loginUrl="~/Home/pp" timeout="" cookieless="UseCookies"></forms>

    </authentication>

 </system.web>

   //

        // GET: /Home/

        public ActionResult Index()

        {

            return View();

        }

        [AllowAnonymous]//默认情况，可以不用验证身份

        public ActionResult pp()

        {

            //HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, "B");

            //System.Web.HttpContext.Current.Response.Cookies.Add(cookie);

            //设置cookie的值

            FormsAuthentication.SetAuthCookie("b", false);

            return View();

        }

        //[AllowAnonymous]//默认情况，可以不用验证身份

        public ActionResult CheckData()

        {

            return View("Index");

        }