public ActionResult Login(FormCollection collection)
 {
     DAL.m_announcement dal_m_announcement = new DAL.m_announcement();
     List<Models.m_announcement> m_announcement_list = dal_m_announcement.GetListModelByPage(true);
     try
     {
         var name = collection["name"].Trim();
         var password = collection["password"].Trim();
         var rememberMe = collection["rememberMe"];
         var valicode = collection["valicode"].Trim();
         var returnUrl = collection["returnUrl"];
         //验证验证码
         if (Session["ValidateCode"].ToString() != valicode)
         {
             ViewBag.errorMessage = "Incorrect verification code";
             return View(m_announcement_list);
         }
         //此处验证用户名、密码
         DAL.z_user dal_user = new DAL.z_user();
         Models.z_user model_z_user = dal_user.GetLoginModel(name.Trim(), Common.Common.MD5(password.Trim()));
         if (model_z_user == null)
         {
             ViewBag.errorMessage = "User name or password is incorrect";
             return View(m_announcement_list);
         }
         //验证成功
         if (rememberMe == "on")
         {
             HttpCookie cookie = new HttpCookie("YourAppLogin");
             Common.Encrypt Encrypt = new Common.Encrypt();
             cookie.Values.Add("loginUserAccount", Encrypt.EncryptString(name.Trim()));
             cookie.Expires = DateTime.Now.AddDays(5);
             Response.Cookies.Add(cookie);
         }
         DAL.z_menu dal_z_menu = new DAL.z_menu();
         List<Models.z_menu> z_menu_list = dal_z_menu.GetMenuModelListByUserID(model_z_user.ID);
         Session.Add("loginUserMenuList", z_menu_list);
         Session.Add("loginUserModel", model_z_user);
         if (!String.IsNullOrEmpty(returnUrl))
         {
             return Redirect(returnUrl);
         }
         else
         {
             return RedirectToAction("Index", "Home");
         }
     }
     catch
     {
         ViewBag.errorMessage = "Incorrect verification code";
         return View(m_announcement_list);
     }
 }
 public ActionResult Login(String returnUrl)
 {
     ViewBag.Title = "Login";
     DAL.m_announcement dal_m_announcement = new DAL.m_announcement();
     List<Models.m_announcement> m_announcement_list = dal_m_announcement.GetListModelByPage(true);
     try
     {
         //Remember me login.
         DAL.z_user dal_user = new DAL.z_user();
         if (Request.Cookies["YourAppLogin"] != null)
         {
             string userAccount = Request.Cookies["YourAppLogin"].Values["loginUserAccount"];
             if (userAccount != null)
             {
                 Common.Encrypt Encrypt = new Common.Encrypt();
                 Models.z_user model_z_user = dal_user.GetLoginModel(Encrypt.DecryptString(userAccount.Trim()));
                 if (model_z_user != null)
                 {
                     DAL.z_menu dal_z_menu = new DAL.z_menu();
                     List<Models.z_menu> z_menu_list = dal_z_menu.GetMenuModelListByUserID(model_z_user.ID);
                     Session.Add("loginUserMenuList", z_menu_list);
                     Session.Add("loginUserModel", model_z_user);
                     if (!String.IsNullOrEmpty(returnUrl))
                     {
                         return Redirect(returnUrl);
                     }
                     else
                     {
                         return RedirectToAction("Index", "Home");
                     }
                 }
             }
         }
         ViewBag.errorMessage = "Please Login...";
         return View(m_announcement_list);
     }
     catch
     {
         ViewBag.errorMessage = "Please Login...";
         return View(m_announcement_list);
     }
 }