nhibernate查询返回尚未持久化到数据库的更改

以下单元测试失败,我对检索到的对象进行了更改,然后在同一会话中进行了查询,该查询似乎考虑了我对该对象所做的未提交的更改。

如何让nhibernate忽略任何未限制的更改并只查询数据库?

[Test]
public void Test()
{
    // Arrange
    Area area1 = new Area { Name = "Area 1" };
    Area area2 = new Area { Name = "Area 2" };
    using (ISession session = SessionFactory.OpenSession())
    {
        using (var transaction = session.BeginTransaction())
        {
            session.Save(area1);
            session.Save(area2);
            transaction.Commit();
        }
    }
    int resultCount;

    // Act
    using (ISession session = SessionFactory.OpenSession())
    {
        Area existingArea;
        using (var transaction = session.BeginTransaction())
        {
            existingArea = session.Get<Area>(area1.ID);
        }

        existingArea.Name = area2.Name;

        using (var transaction = session.BeginTransaction())
        {
            resultCount = session.CreateCriteria<Area>().Add(Restrictions.Eq("Name", existingArea.Name)).List<Area>().Count;
        }
    }

    // Assert
    Assert.AreEqual(1, resultCount);
}