public bool Login(LoginViewModel model)
        {

            if (fAuth.Authenticate(model.UserName, model.Password))
            {
                LoggedIn.username = model.UserName;
                return true;
            }
            else
                return false;

            
        }
        public ActionResult Login(LoginViewModel model, string returnUrl)
        {
            Authprovider fAuth = new Authprovider();
            if (ModelState.IsValid)
            {
                if (fAuth.Authenticate(model.UserName, model.Password))
                {
                    LoggedIn.username = model.UserName;
                    return Redirect("UserMain");
                }
                else
                {
                    ModelState.AddModelError("", "Incorrect username or password");
                }
            }
            return View();
              


        }
 public ActionResult Login(LoginViewModel model, string returnUrl)
 {
     if (ModelState.IsValid)
     {
         if (authProvider.Authenticate(model.UserName, model.Password))
         {
             LoggedIn.username = model.UserName;
             if (LoggedIn.username == "Admin")
                 return Redirect(returnUrl ?? Url.Action("Index", "Home"));
             else
                 return Redirect(returnUrl ?? Url.Action("UserMain", "User"));
         }
         else
         {
             ModelState.AddModelError("", "Incorrect username or password");
             return View();
         }
     }
     else
     {
         return View();
     }
 }