Cascade添加/更新树(父/子)数据

我有一些问题。这是数据库结构:

CREATE TABLE [EvaluationProcess].[CriteriaHeader](
    [CriteriaHeader_No] [uniqueidentifier] NOT NULL,
    [CriteriaHeader_Type] [int] NOT NULL,
    [CriteriaHeader_Name] [nvarchar](128) NOT NULL,
    [CriteriaHeader_Description] [nvarchar](256) NULL,
    [CriteriaHeader_MaxScore] [int] NOT NULL,
    [CriteriaHeader_MinScore] [int] NOT NULL,
    [CriteriaHeader_ScoreStep] [int] NOT NULL,
    [CriteriaHeader_IsCountedResult] [bit] NOT NULL,
    [CriteriaHeader_IsBlocked] [bit] NOT NULL,
    [OwnedOrganisationID] [uniqueidentifier] NULL,
    [ModifyUser] [uniqueidentifier] NULL,
    [ModifyDate] [datetime] NULL,
    [TimeStamp] [timestamp] NULL,
 CONSTRAINT [PK_Criteria] PRIMARY KEY CLUSTERED 
(
    [CriteriaHeader_No] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [EvaluationProcess].[CriteriaHeader] ADD  CONSTRAINT [DF_Criteria_Criteria_No]  DEFAULT (newsequentialid()) FOR [CriteriaHeader_No]
GO
ALTER TABLE [EvaluationProcess].[CriteriaHeader] ADD  CONSTRAINT [DF_Criteria_Criteria_Type]  DEFAULT ((0)) FOR [CriteriaHeader_Type]
GO
ALTER TABLE [EvaluationProcess].[CriteriaHeader] ADD  CONSTRAINT [DF_Criteria_Criteria_MaxScore_1]  DEFAULT ((5)) FOR [CriteriaHeader_MaxScore]
GO
ALTER TABLE [EvaluationProcess].[CriteriaHeader] ADD  CONSTRAINT [DF_Criteria_Criteria_MinScore_1]  DEFAULT ((0)) FOR [CriteriaHeader_MinScore]
GO
ALTER TABLE [EvaluationProcess].[CriteriaHeader] ADD  CONSTRAINT [DF_Criteria_Criteria_ScoreStep_1]  DEFAULT ((1)) FOR [CriteriaHeader_ScoreStep]
GO
ALTER TABLE [EvaluationProcess].[CriteriaHeader] ADD  CONSTRAINT [DF_Criteria_Criteria_IsCountedResult]  DEFAULT ((0)) FOR [CriteriaHeader_IsCountedResult]
GO
ALTER TABLE [EvaluationProcess].[CriteriaHeader] ADD  CONSTRAINT [DF_Criteria_Criteria_IsBlocked]  DEFAULT ((0)) FOR [CriteriaHeader_IsBlocked]
GO
ALTER TABLE [EvaluationProcess].[CriteriaHeader] ADD  CONSTRAINT [DF_Criteria_ModifyDate]  DEFAULT (getdate()) FOR [ModifyDate]
GO
CREATE TABLE [EvaluationProcess].[CriteriaLine](
    [CriteriaLine_No] [uniqueidentifier] NOT NULL,
    [CriteriaLine_ParentID] [uniqueidentifier] NULL,
    [CriteriaLine_CriteriaHeaderID] [uniqueidentifier] NULL,
    [CriteriaLine_Text] [nvarchar](128) NOT NULL,
    [CriteriaLine_Description] [nvarchar](512) NULL,
    [OwnedOrganisationID] [uniqueidentifier] NULL,
    [ModifyUser] [uniqueidentifier] NULL,
    [ModifyDate] [datetime] NULL,
    [TimeStamp] [timestamp] NULL,
 CONSTRAINT [PK_CriteriaList] PRIMARY KEY CLUSTERED 
(
    [CriteriaLine_No] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [EvaluationProcess].[CriteriaLine] ADD  CONSTRAINT [DF_CriteriaList_CriteriaList_No]  DEFAULT (newsequentialid()) FOR [CriteriaLine_No]
GO
ALTER TABLE [EvaluationProcess].[CriteriaLine] ADD  CONSTRAINT [DF_CriteriaList_ModifyDate]  DEFAULT (getdate()) FOR [ModifyDate]
GO
ALTER TABLE [EvaluationProcess].[CriteriaLine]  WITH CHECK ADD  CONSTRAINT [FK_CriteriaLine_CriteriaLine] FOREIGN KEY([CriteriaLine_CriteriaHeaderID])
REFERENCES [EvaluationProcess].[CriteriaHeader] ([CriteriaHeader_No])
ON UPDATE CASCADE
ON DELETE CASCADE
GO
ALTER TABLE [EvaluationProcess].[CriteriaLine] CHECK CONSTRAINT [FK_CriteriaLine_CriteriaLine]
GO
ALTER TABLE [EvaluationProcess].[CriteriaLine]  WITH CHECK ADD  CONSTRAINT [FK_CriteriaLine_CriteriaLine1] FOREIGN KEY([CriteriaLine_ParentID])
REFERENCES [EvaluationProcess].[CriteriaLine] ([CriteriaLine_No])
GO
ALTER TABLE [EvaluationProcess].[CriteriaLine] CHECK CONSTRAINT [FK_CriteriaLine_CriteriaLine1]
GO

I使用EntityFramework这是一个Add/Update函数

public override bool InsertOrUpdate(object[] _BaseEntityClasses, string _RoleName,
                                    System.Nullable<Guid> _LoginUserID,
                                      System.Nullable<System.Guid> _OrganisationID, bool? IsModified = null)
{
    using (Evaluation_SystemConection EvaluationDBContext = new Evaluation_SystemConection())
    {
        try
        {
            EvaluationDBContext.Configuration.AutoDetectChangesEnabled = false;
            IEnumerable<CriteriaHeader> _BaseEntityClassesList = _BaseEntityClasses.Cast<CriteriaHeader>();
            foreach (var OneItem in _BaseEntityClassesList)
            {
                if (OneItem.CriteriaLines != null)
                {
                    foreach (var OneLine in OneItem.CriteriaLines)
                    {
                        if (OneLine.CriteriaLine_No == Guid.Empty)
                            OneLine.CriteriaLine_CriteriaHeaderID = OneItem.CriteriaHeader_No;
                        EvaluationDBContext.CriteriaLines.Attach(OneLine);

                        EvaluationDBContext.Entry(OneLine).State = OneLine.CriteriaLine_No == Guid.Empty ? EntityState.Added : EntityState.Modified;
                    }
                }
                EvaluationDBContext.CriteriaHeaders.Add(OneItem);
                EvaluationDBContext.Entry(OneItem).State = OneItem.CriteriaHeader_No == Guid.Empty ? EntityState.Added : EntityState.Modified;
                if (EvaluationDBContext.SaveChanges() <= 0)
                    return false;
            }
            return true;
        }
        catch (Exception Ex)
        {
            ErrorMessage.Add("");
            ErrorMessage.Add((Ex.InnerException != null) ? Ex.InnerException.Message : Ex.Message);
            return false;
        }
        finally
        {
            EvaluationDBContext.Configuration.AutoDetectChangesEnabled = true;
        }
    }
}

和生成的POCO类

public partial class CriteriaHeader
{
    public CriteriaHeader()
    {
        this.CriteriaLines = new HashSet<CriteriaLine>();
    }
    public System.Guid CriteriaHeader_No { get; set; }
    public int CriteriaHeader_Type { get; set; }
    public string CriteriaHeader_Name { get; set; }
    public string CriteriaHeader_Description { get; set; }
    public int CriteriaHeader_MaxScore { get; set; }
    public int CriteriaHeader_MinScore { get; set; }
    public int CriteriaHeader_ScoreStep { get; set; }
    public bool CriteriaHeader_IsCountedResult { get; set; }
    public bool CriteriaHeader_IsBlocked { get; set; }
    public Nullable<System.Guid> OwnedOrganisationID { get; set; }
    public Nullable<System.Guid> ModifyUser { get; set; }
    public Nullable<System.DateTime> ModifyDate { get; set; }
    public byte[] TimeStamp { get; set; }
    public virtual ICollection<CriteriaLine> CriteriaLines { get; set; }
}
public partial class CriteriaLine
{
    public CriteriaLine()
    {
        this.CriteriaLine1 = new HashSet<CriteriaLine>();
    }
    public System.Guid CriteriaLine_No { get; set; }
    public Nullable<System.Guid> CriteriaLine_ParentID { get; set; }
    public Nullable<System.Guid> CriteriaLine_CriteriaHeaderID { get; set; }
    public string CriteriaLine_Text { get; set; }
    public string CriteriaLine_Description { get; set; }
    public Nullable<System.Guid> OwnedOrganisationID { get; set; }
    public Nullable<System.Guid> ModifyUser { get; set; }
    public Nullable<System.DateTime> ModifyDate { get; set; }
    public byte[] TimeStamp { get; set; }
    public virtual CriteriaHeader CriteriaHeader { get; set; }
    public virtual ICollection<CriteriaLine> CriteriaLine1 { get; set; }
    public virtual CriteriaLine CriteriaLine2 { get; set; }
}

数据在CriteriaList中未插入或更新超过1级。

我做错了什么?