public ActionResult LoginOn(LoginModel model)
        {
            //判断验证是否通过
            if (!ModelState.IsValid)
            {
                return(View());
            }
            var Dmodel = userhandler.GetSingleByName(model.user_login_name);

            if (Dmodel == null)
            {
                ViewBag.Data = 1;
                return(View());
            }

            //判断用户是否禁用,禁用提示信息
            if (!Dmodel.isopen)
            {
                ModelState.AddModelError("user_login_name", "用户名不存在");
                return(View());
            }

            var str = MD5Helper.Decode(Dmodel.user_pwd);

            if (!str.Equals(model.user_pwd))
            {
                ModelState.AddModelError("user_pwd", "密码不正确");
                return(View());
            }

            model.user_pwd = MD5Helper.Encode(model.user_pwd);
            var j = new { record = Dmodel };
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            //response.Write(serializer.Serialize(Dmodel));
            //保存身份信息,参数说明可以看提示
            //string roles = "admin,member,developer";
            FormsAuthenticationTicket Ticket = new FormsAuthenticationTicket(1, model.user_login_name, DateTime.Now, DateTime.Now.AddHours(2), false, Dmodel.user_role);
            HttpCookie Cookie = new HttpCookie(FormsAuthentication.FormsCookieName, FormsAuthentication.Encrypt(Ticket)); //加密身份信息,保存至Cookie

            Cookie.HttpOnly = true;                                                                                       //客户端无法访问Cookie
            Response.Cookies.Add(Cookie);
            ViewBag.Data = 0;
            return(View());
        }