无效的列名鉴别器

如何解决无效的列名鉴别器

好的。我已经在这个街区周围几次了。我有一些继承自实体框架代码优先类的类，我重写了这些类以消除继承。

但是，当我尝试通过实体框架读取未继承的表时遇到这个奇怪的错误，在表中定义了一个主键，并且在 cs 代码中使用 [key] 标记标识了该主键.

这是 cs 实体框架代码：

namespace Entities
{
    using System;
    using System.ComponentModel.DataAnnotations;
    using System.ComponentModel.DataAnnotations.Schema;

    [Table("tblMember")]
    public partial class tblMember
    {
        [Key]
        [StringLength(50)]
        public string CN { get; set; }

      [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
      public int MemberUID { get; set; }

      [required]
        [StringLength(1024)]
        public string Password { get; set; }

        [StringLength(25)]
        public string Title { get; set; }

        [StringLength(50)]
        public string firstName { get; set; }

        [StringLength(25)]
        public string middleName { get; set; }

        [StringLength(50)]
        public string lastName { get; set; }

        [required]
        [StringLength(400)]
        public string eMail { get; set; }

        [required]
        [StringLength(64)]
        public string GUID { get; set; }

        public bool eMail_verified { get; set; }

        [Column(TypeName = "smalldatetime")]
        public DateTime dtRegDate { get; set; }

        [StringLength(50)]
        public string orgName { get; set; }

        [StringLength(50)]
        public string orgStreet1 { get; set; }

        [StringLength(50)]
        public string orgStreet2 { get; set; }

        [StringLength(50)]
        public string orgCity { get; set; }

        [StringLength(50)]
        public string orgProvince { get; set; }

        [StringLength(53)]
        public string orgCountry { get; set; }

        [StringLength(20)]
        public string orgPostal { get; set; }

        [StringLength(25)]
        public string HomeTelephone { get; set; }

        [StringLength(25)]
        public string WorkTelephone { get; set; }

        [StringLength(50)]
        public string billName { get; set; }

        [StringLength(50)]
        public string billStreet1 { get; set; }

        [StringLength(50)]
        public string billStreet2 { get; set; }

        [StringLength(50)]
        public string billCity { get; set; }

        [StringLength(50)]
        public string billProvince { get; set; }

        [StringLength(53)]
        public string billCountry { get; set; }

        [StringLength(20)]
        public string billPostal { get; set; }

        [StringLength(250)]
        public string pwdQuestion { get; set; }

        [StringLength(250)]
        public string pwdAnswer { get; set; }

        public bool canReview { get; set; }

        public bool IMV_Registered { get; set; }

        public int TimeZoneID { get; set; }

        public decimal TimeZoneOffset { get; set; }

        [StringLength(11)]
        public string tm_NPI_Number { get; set; }

        public bool tm_bHashedPassword { get; set; }

        [StringLength(10)]
        public string tm_PasswordSalt { get; set; }

        public int? tm_NPI_SourceID { get; set; }

        public virtual tblMemberNPI_Source tblMemberNPI_Source { get; set; }

   }
}

这是试图从表中取出成员的代码：

               var objJunk = from mem in dbContext.tblMembers
                             where mem.MemberUID == objRpm.rcm_MemberUID
                             select mem;
               string strJunk = objJunk.ToString();

这是生成的 sql（strJunk 的值）：

SELECT 
    [Extent1].[discriminator] AS [discriminator],[Extent1].[CN] AS [CN],[Extent1].[MemberUID] AS [MemberUID],[Extent1].[Password] AS [Password],[Extent1].[Title] AS [Title],[Extent1].[firstName] AS [firstName],[Extent1].[middleName] AS [middleName],[Extent1].[lastName] AS [lastName],[Extent1].[eMail] AS [eMail],[Extent1].[GUID] AS [GUID],[Extent1].[eMail_verified] AS [eMail_verified],[Extent1].[dtRegDate] AS [dtRegDate],[Extent1].[orgName] AS [orgName],[Extent1].[orgStreet1] AS [orgStreet1],[Extent1].[orgStreet2] AS [orgStreet2],[Extent1].[orgCity] AS [orgCity],[Extent1].[orgProvince] AS [orgProvince],[Extent1].[orgCountry] AS [orgCountry],[Extent1].[orgPostal] AS [orgPostal],[Extent1].[HomeTelephone] AS [HomeTelephone],[Extent1].[WorkTelephone] AS [WorkTelephone],[Extent1].[billName] AS [billName],[Extent1].[billStreet1] AS [billStreet1],[Extent1].[billStreet2] AS [billStreet2],[Extent1].[billCity] AS [billCity],[Extent1].[billProvince] AS [billProvince],[Extent1].[billCountry] AS [billCountry],[Extent1].[billPostal] AS [billPostal],[Extent1].[pwdQuestion] AS [pwdQuestion],[Extent1].[pwdAnswer] AS [pwdAnswer],[Extent1].[canReview] AS [canReview],[Extent1].[IMV_Registered] AS [IMV_Registered],[Extent1].[TimeZoneID] AS [TimeZoneID],[Extent1].[TimeZoneOffset] AS [TimeZoneOffset],[Extent1].[tm_NPI_Number] AS [tm_NPI_Number],[Extent1].[tm_bHashedPassword] AS [tm_bHashedPassword],[Extent1].[tm_PasswordSalt] AS [tm_PasswordSalt],[Extent1].[tm_NPI_SourceID] AS [tm_NPI_SourceID],[Extent1].[projectId] AS [projectId]
    FROM [dbo].[tblMember] AS [Extent1]
    WHERE ([Extent1].[discriminator] IN (N'newRybbonMember',N'tblMember')) AND ([Extent1].[MemberUID] = @p__linq__0)

不确定它到底是从哪里得到 newRybbonMember 或 projectId 的，因为它们都不在 tblMember 定义中。

任何想法将不胜感激。 TIA，