在ActiveRecord中插入父级-子级

我正在使用CastleActiveRecord映射数据库

我有这样一个简单的数据库： 和映射代码：

组：

[ActiveRecord("[Group]")]
    public class Group : ActiveRecordBase
    {
        private long m_ID;
        private string m_GroupName;
        private string m_Description;
        private IList<Contact> m_Contacts = new List<Contact>();

        [PrimaryKey(Column = "`ID`", Generator = PrimaryKeyType.Identity)]
        public long ID
        {
            get { return m_ID; }
            set { m_ID = value; }
        }

        [Property(Column = "`GroupName`", NotNull = true)]
        public string GroupName
        {
            get { return m_GroupName; }
            set { m_GroupName = value; }
        }

        [Property(Column = "`Description`", NotNull = false)]
        public string Description
        {
            get { return m_Description; }
            set { m_Description = value; }
        }

        [HasAndBelongsToMany(typeof(Contact),
            Table = "`Contact_Group`",
            ColumnRef = "`ContactID`",
            ColumnKey = "`GroupID`")]
        public IList<Contact> Contacts
        {
            get { return m_Contacts; }
            set { this.m_Contacts = value; }
        }

        public static Group[] FindAll()
        {
            try
            {
                return (Group[])ActiveRecordBase.FindAll(typeof(Group));
            }
            catch (Exception e)
            {
                MessageBox.Show(e.Message, "Loi", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return null;
            }
        }

现在我想在联系人表中插入一个新联系人，并在联系人组表中添加一组联系人组。这是我的代码：

public void Save()
        {
            try
            {
                if (this.view.CheckFields())
                {
                    // Add new contact 
                    if (this.contact == null)
                    {
                        Contact c = new Contact();
                        c.FirstName = this.view.GetFirstName();
                        c.LastName = this.view.GetLastName();
                        c.Number = this.view.GetNumber();
                        c.Sex = this.view.GetSex();
                        c.DayOfBirth = this.view.GetDayOfBirth();
                        c.Nationality = this.view.GetNationality();
                        c.ExtraNumber = this.view.GetExtraNumber();
                        c.Email = this.view.GetEmail();
                        c.Address = this.view.GetAddress();
                        c.Company = this.view.GetCompany();
                        c.Career = this.view.GetCareer();
                        c.ExtraInfo = this.view.GetExtraInfo();

                        // Check if the contact's number is valid
                        if (IsValidNumber(c.Number))
                        {                            
                            Group[] gs = this.view.GetGroupList();
                            foreach (Group g in groups)
                            {
                                c.Groups.Add(g);                           
                            }                         
                            c.CreateAndFlush();
                        }
                    }
                    else // Modify a contact
                    {

                    }
                }
            }
            catch (OleDbException e)
            {
                MessageBox.Show(e.Message, "Loi", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

但在执行Save（）之后，它只插入一个新联系人，而不插入联系人组。 映射或Save（）方法中是否有错误？ 请帮帮我。提前谢谢。

---

P/S：我是NHibernate的新手。

我尝试了这段代码，它成功了==

using (new SessionScope())
{
    Group[] gs = this.view.GetGroupList();
    foreach (Group g in groups)
    {
    contact.Groups.Add(g);
    }
    contact.Save();
}

public void Save()
        {
            try
            {
                if (this.view.CheckFields())
                {
                    // Add new contact 
                    if (this.contact == null)
                    {
                        Contact c = new Contact();
                        c.FirstName = this.view.GetFirstName();
                        c.LastName = this.view.GetLastName();
                        c.Number = this.view.GetNumber();
                        c.Sex = this.view.GetSex();
                        c.DayOfBirth = this.view.GetDayOfBirth();
                        c.Nationality = this.view.GetNationality();
                        c.ExtraNumber = this.view.GetExtraNumber();
                        c.Email = this.view.GetEmail();
                        c.Address = this.view.GetAddress();
                        c.Company = this.view.GetCompany();
                        c.Career = this.view.GetCareer();
                        c.ExtraInfo = this.view.GetExtraInfo();

                        // Check if the contact's number is valid
                        if (IsValidNumber(c.Number))
                        {                            
                            Group[] gs = this.view.GetGroupList();
                            foreach (Group g in groups)
                            {
                                c.Groups.Add(g);                           
                            }                         
                            c.CreateAndFlush();
                        }
                    }
                    else // Modify a contact
                    {

                    }
                }
            }
            catch (OleDbException e)
            {
                MessageBox.Show(e.Message, "Loi", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

using (new SessionScope())
{
    Group[] gs = this.view.GetGroupList();
    foreach (Group g in groups)
    {
    contact.Groups.Add(g);
    }
    contact.Save();
}