將實體添加到數據庫實體框架會生成異常'System.Data.Entity.Infrastructure.DbUpdateException

Question

我有一個包含六個表（人，地址，電子郵件，電話，教育，出生，圖片）的數據庫。 表角色具有與許多（地址，電子郵件，電話，教育）和一對一（出生，圖片）的關系。表教育是一對一的地址orez一對多（電子郵件，電話）的關系。 首先由實體框架通過代碼創建數據庫，然后創建空而沒有porblemu。 直到您不包含任何類型的數據（教育），添加實體運行都不會出現問題，然后引發異常：

EntityFramework.dll中發生類型為'System.Data.Entity.Infrastructure.DbUpdateException'的未處理異常

附加信息：更新條目時發生錯誤。 有關詳細信息，請參見內部異常。

我班的代碼

[Table ("Person")]
public class Person
{
    [Key]
    [Column ("Person_ID")]
    public int PersonID { get; set; }
    [Column ("Name")]
    [Required]
    [MaxLength (50)]
    public string Name { get; set; }
    [Column ("Surname")]
    [Required]
    [MaxLength (50)]
    public string Surname { get; set; }
    [Timestamp]
    public byte[] RovVersion { get; set; }


    public virtual IList<Adress> Adress { get; set; }
    public virtual IList<Email> Mail { get; set; }
    public virtual IList<Phone> Phone { get; set; }
    public virtual IList<Education> Education { get; set; }
    public virtual Birth Birth { get; set; }
    public virtual Pictures Pictures { get; set; }
}
[Table ("Education")]
public class Education
{
    [Key]
    [Column("Education_ID")]
    public int EducationID { get; set; }
    [Column("Name")]
    [MaxLength(50)]
    public string NameOfScool { get; set; }
    [Column("Start")]
    public DateTime StartEducaton { get; set; }
    [Column("End")]
    public DateTime EndEducation { get; set; }
    [ForeignKey("Person")]
    [Column("Person_ID")]
    public int PersonID { get; set; }
    [ForeignKey("Adress")]
    [Column("Adress_ID")]
    public int AdresID { get; set; }

    public virtual Person Person { get; set; }
    public virtual Adress Adress { get; set; }
    public virtual IList<Email> Mail { get; set; }
    public virtual IList<Phone> Phone { get; set; }
}
[Table("Adress")]
public class Adress
{
    [Key]
    [Column ("Adress_ID")]
    public int AdressID { get; set; }
    [Column ("Adress_1")]
    [MaxLength (50)]
    public string Adress1 { get; set; }
    [Column ("Adress_2")]
    [MaxLength (50)]
    public string Adress2 { get; set; }
    [Column ("Number")]
    [MaxLength (10)]
    public string Number { get; set; }
    [Column ("Post")]
    [MaxLength (50)]
    public string Post { get; set; }
    [Column ("Code_Post")]
    [MaxLength (6)]
    public string CodePost { get; set; }
    [Column ("Region")]
    public EnumRegion Region { get; set; }
    [Column ("Country")]
    [MaxLength (50)]
    public string Country { get; set; }

    public virtual Person Person { get; set; }
}
[Table ("Birth")]
public class Birth
{
    [ForeignKey ("Person")]
    [Column ("Birth_ID")]
    public int BirthID { get; set; }
    [Column("Place_Of_Birth")]
    [MaxLength (50)]
    public string Place { get; set; }
    [Column ("Date_Of_Birth")]
    public DateTime Date { get; set; }

    public virtual Person Person { get; set; }
}
[Table("Phone")]
public class Phone
{
    [Key]
    [Column("Phone_ID")]
    public int PhoneId { get; set; }
    [Column("Phone_Number")]
    public int PhoneNumber { get; set; }
    [Column("Choise_Phone")]
    public EnumChoise Choise { get; set; }

    public virtual Person Person { get; set; }
    public virtual Education Education { get; set; }
}
[Table ("Email")]  
public class Email
{
    [Key]
    [Column("Adress_ID")]
    public int EmailId { get; set; }
    [Column("Mail")]
    [MaxLength(50)]
    public string Mail { get; set; }
    [Column("Choise_Mail")]
    public EnumChoise Choise { get; set; }

    public virtual Person Person { get; set; }
    public virtual Education Education { get; set; }
}

上下文類

public class EFContext :DbContext
{
    public EFContext()
        :base ("name=EntityModel")
    {
        Database.SetInitializer(new MigrateDatabaseToLatestVersion<EFContext,
    Migrations.Configuration>());

    }
    public DbSet<Person> Person { get; set; }
    public DbSet<Adress> Adress { get; set; }
    public DbSet<Email> Mail { get; set; }
    public DbSet<Phone> Phone { get; set; }
    public DbSet<Birth> Birth { get; set; }
    public DbSet<Education> Education { get; set; }
    public DbSet<Pictures> Pictures { get; set; }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Entity<Person>().Property(e => e.RovVersion).IsRowVersion();
        base.OnModelCreating(modelBuilder);
    }

我不知道是什么原因造成的，請提供幫助

Answer 1

如錯誤消息所述，您將需要查看內部異常以獲取更多信息。

快速查看您的代碼，我猜想它可能是在抱怨“出生”表上缺少主鍵