public bool Insert(UserInfo userInfo)
    {
        Configuration cfg = new Configuration().Configure(path);

        ISession session = cfg.BuildSessionFactory().OpenSession();
        ITransaction transaction = session.BeginTransaction();

        try
        {
            session.Save(userInfo);
            transaction.Commit();
            return true;
        }
        catch (Exception e)
        {
            transaction.Rollback();
            return false;
        }
        finally
        {
            session.Close();
        }
    }