public void Add(Account account)
        {

            using (ISession session = NHibernateHelper.OpenSession())
            using (ITransaction transaction = session.BeginTransaction())
            {
                session.Save(account);
                transaction.Commit();
            }
        }
        public void Remove(Account account)
        {

            throw new NotImplementedException();

        }
        public void Update(Account account)
        {

            throw new NotImplementedException();

        }