实体框架6无法识别存在的外键

Question

我有一个桌面联系人，有两部手机可用于主电话和第二部电话。这两个都有字段primaryphonetypeid和secondaryphonetypeid。这两列引用了同一个表的phonetype。无论我做什么，EF都不会将secondaryphonetypeid识别为外键。我甚至从我的代码中删除了primaryphonetypeid并杀死了它的外键约束，它仍然说secondaryphonetypeid不存在。

[Table("PhoneType", Schema = "lkp")]
public class PhoneTypeEntity
{
    [Key]
    [Required]
    [Column("PhoneTypeId")]
    public int PhoneTypeId { get; set; }

    [Column("PhoneTypeName")]
    public string PhoneTypeName { get; set; }        
}

public class ContactEntity
{

    [Key]
    [Required]
    [Column("ContactId")]
    public int ContactId { get; set; }

    [Column("AccountId")]
    public int? AccountId { get; set; }

    [ForeignKey("AccountId")]
    public virtual AccountEntity Account { get; set; }
    [Column("ContactTypeId")]
    public int? ContactTypeId { get; set; }

    [ForeignKey("ContactTypeId")]
    public virtual ContactTypeEntity ContactType { get; set; }

    [Column("FirstName")]
    public string FirstName { get; set; }

    [Column("LastName")]
    public string LastName { get; set; }

    [Column("EmailAddress")]
    public string EmailAddress { get; set; }

    [Column("PrimaryPhone")]
    public string PrimaryPhone { get; set; }

        [Column("PreferredContactMethodId")]
        public int? PreferredContactMethodId { get; set; }

        [ForeignKey("PreferredContactMethodId")]
        public virtual PreferredContactMethodEntity PreferredContactMethod { get; set; }

        [Column("AddressLine1")]
        public string AddressLine1 { get; set; }

        [Column("AddressLine2")]
        public string AddressLine2 { get; set; }

        [Column("PrimaryPhoneTypeId")]
        public int? PrimaryPhoneTypeId { get; set; }

        [ForeignKey("PrimaryPhoneTypeId")]
        public virtual PhoneTypeEntity PrimaryPhoneType { get; set; }

        [Column("SecondaryPhone")]
        public string SecondaryPhone { get; set; }

        [Column("SecondaryPhoneTypeId")]
        public int? SecondayPhoneTypeId { get; set; }

        [ForeignKey("SecondaryPhoneTypeId")]
        public virtual PhoneTypeEntity SecondaryPhoneType { get; set; }


    }

正如您所看到的，此表中还有其他外键，它们都可以正常工作。

这是包含约束的表。无论我尝试过什么，它都不会将SecondaryPhoneTypeId识别为实体框架中的外键。

CREATE TABLE [dbo].[Contact](
    [ContactId] [int] IDENTITY(1,1) NOT NULL,
    [AccountId] [int] NULL,
    [ContactTypeId] [int] NOT NULL,
    [PreferredContactMethodId] [int] NULL,
    [FirstName] [nvarchar](50) NULL,
    [LastName] [nvarchar](50) NULL,
    [AddressLine1] [nvarchar](100) NULL,
    [AddressLine2] [nvarchar](100) NULL,
    [PrimaryPhone] [nvarchar](10) NULL,
    [PrimaryPhoneTypeId] [int] NULL,
    [SecondaryPhone] [nvarchar](10) NULL,
    [SecondaryPhoneTypeId] [int] NULL,
    [State] [nvarchar](5) NULL,
    [EmailAddress] [nvarchar](100) NULL,
    [PostalCode] [nvarchar](10) NULL,
    [IsMilitary] [bit] NULL DEFAULT ((0)),
    [City] [nvarchar](50) NULL,
 CONSTRAINT [PK_ContactDetail] PRIMARY KEY CLUSTERED 
(
    [ContactId] 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 [dbo].[Contact]  WITH NOCHECK ADD  CONSTRAINT [FK_Contact_Account] FOREIGN KEY([AccountId])
REFERENCES [dbo].[Account] ([AccountId])
NOT FOR REPLICATION 
GO

ALTER TABLE [dbo].[Contact] NOCHECK CONSTRAINT [FK_Contact_Account]
GO

ALTER TABLE [dbo].[Contact]  WITH CHECK ADD  CONSTRAINT [FK_Contact_ContactType] FOREIGN KEY([ContactTypeId])
REFERENCES [lkp].[ContactType] ([ContactTypeId])
GO

ALTER TABLE [dbo].[Contact] CHECK CONSTRAINT [FK_Contact_ContactType]
GO

ALTER TABLE [dbo].[Contact]  WITH NOCHECK ADD  CONSTRAINT [FK_Contact_PreferredContactMethod] FOREIGN KEY([PreferredContactMethodId])
REFERENCES [lkp].[PreferredContactMethod] ([PreferredContactMethodId])
NOT FOR REPLICATION 
GO

ALTER TABLE [dbo].[Contact] NOCHECK CONSTRAINT [FK_Contact_PreferredContactMethod]
GO

ALTER TABLE [dbo].[Contact]  WITH NOCHECK ADD  CONSTRAINT [FK_Contact_PrimaryPhoneTypeId] FOREIGN KEY([PrimaryPhoneTypeId])
REFERENCES [lkp].[PhoneType] ([PhoneTypeId])
NOT FOR REPLICATION 
GO

ALTER TABLE [dbo].[Contact] NOCHECK CONSTRAINT [FK_Contact_PrimaryPhoneTypeId]
GO

ALTER TABLE [dbo].[Contact]  WITH NOCHECK ADD  CONSTRAINT [FK_Contact_SecondaryPhoneTypeId] FOREIGN KEY([SecondaryPhoneTypeId])
REFERENCES [lkp].[PhoneType] ([PhoneTypeId])
NOT FOR REPLICATION 
GO

ALTER TABLE [dbo].[Contact] NOCHECK CONSTRAINT [FK_Contact_SecondaryPhoneTypeId]
GO

    enter code here