public ActionResult Login(Credentials user)
 {
     if (user.userName != null && user.password != null)
     {
         foreach (Credentials users in credentialsRepository.getCredentials())
         {
             if (users.userName == user.userName && users.password == user.userName)
             {
                 return(RedirectToAction("Index", "Home"));
             }
         }
     }
     else
     {
         TempData["LoginError"] = "Incorrect username or password";
     }
     return(RedirectToAction("Index", "Home"));
 }