public ActionResult Login(LoginViewModel model, string returnUrl)
        {
            var message = string.Empty;
            var user = new Zs_User();
            var identity = new ClaimsIdentity();

            if (!ModelState.IsValid)
            {
                return View(model);
            }

            user = bUser.Login(model.Account);
            if (user == null)
            {
                message = string.Format("账号 {0} 不存在", model.Account);
                ModelState.AddModelError("Account", message);
                return View(model);
            }
            else if (user.UserStatus != 1)
            {
                message = string.Format("账号 {0} 无效", model.Account);
                ModelState.AddModelError("Account", message);
                return View(model);
            }
            else if (user.Pwd != StringUtil.EncodeString(model.Password, StringUtil.GetPwdKey(user.UserChar.ToString())))
            {
                message = string.Format("密码输入错误");
                ModelState.AddModelError("Account", message);
                return View(model);
            }

            identity = bUser.CreateIdentity(user, DefaultAuthenticationTypes.ApplicationCookie);
            AuthenticationManager.SignOut(DefaultAuthenticationTypes.ApplicationCookie);
            AuthenticationManager.SignIn(new AuthenticationProperties() { IsPersistent = model.RememberMe }, identity);

            if (string.IsNullOrEmpty(returnUrl))
            {
                return RedirectToAction("Index", "Home");
            }
            else if (Url.IsLocalUrl(returnUrl))
            {
                return Redirect(returnUrl);
            }
            else
            {
                return RedirectToAction("Index", "Home");
            }
        }
        public string Create(UserCreate user)
        {
            string msg;
            try
            {
                if (ModelState.IsValid)
                {
                    Zs_User item = new Zs_User();
                    item = sysFun.InitialEntity<UserCreate, Zs_User>(user, item);
                    item.UserChar = StringUtil.GetGUID();
                    item.Pwd = StringUtil.EncodeString(user.Pwd, StringUtil.GetPwdKey(item.UserChar.ToString()));

                    bUser.Add(item);
                    msg = "Saved Successfully";
                }
                else
                {
                    msg = "Validation data not successfull";
                }
            }
            catch (Exception ex)
            {
                msg = "Error occured:" + ex.Message;
            }
            return msg;
        }