外键组件'.'不是类型 '.' 上的声明属性

Question

我有以下模型：

            Public MustInherit Class Epreuve
            Public Enum EpreuveType
                CourseStade = 1
                ConcoursSansBarre = 2
                ConcoursAvecBarre = 3
                EpreuveMultiple = 4
                EpreuveCombinee = 5
            End Enum
            Public Property EpGuid As Guid
            Public Property FormatPerf As String
            Public Property CodeAppel As String
            Public Property Nom As String
            Public Property NomReduit As String
            Public Property Chrono As String
            Public Property Vent As Boolean
            Public Property Ajustement As Double
            Public MustOverride ReadOnly Property TypeEpreuve As EpreuveType
        End Class
    Public MustInherit Class EpreuveStade
        Inherits Epreuve
    End Class
Public MustInherit Class EpreuveComposee
    Inherits EpreuveStade
    Implements ISousEpreuve
    Public Property EpParentGuid As Guid Implements ISousEpreuve.EpParentGuid
    Public Property SousEpreuves As ObservableCollection(Of EpreuveStade) Implements ISousEpreuve.SousEpreuves
End Class
Public Class EpreuveCombinee
    Inherits EpreuveComposee
    Public Property EpreuveParent As EpreuveComposee
    Public Overrides ReadOnly Property TypeEpreuve As EpreuveType
        Get
            Return EpreuveType.EpreuveCombinee
        End Get
    End Property
End Class

EpreuveComposee和EpreuveStade有很多关系。这是我完成的流畅 API：

With modelBuilder.Entity(Of Epreuve)
    .HasKey(Function(ep) ep.EpGuid)
    .Property(Function(ep) ep.EpGuid).HasDatabaseGeneratedOption(ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption.Identity)
    .Map(Of EpreuveCombinee)(Function(f) f.Requires("TypeEpreuve").HasValue(DirectCast(Epreuve.EpreuveType.EpreuveCombinee, Integer)))
End With
With modelBuilder.Entity(Of EpreuveCombinee)
    .HasRequired(Function(f) f.EpreuveParent).WithMany.HasForeignKey(Function(f) f.EpParentGuid)
End With

当我尝试添加迁移时，出现以下错误：

外键组件"EpParentGuid"不是 上的声明属性 键入"EpreuveCombinee"。验证它是否未显式 从模型中排除，并且它是有效的基元属性。

Answer 1

我已经找到了。

Public MustInherit Class EpreuveComposee
    Inherits EpreuveStade
    Implements ISousEpreuve
    Public Property EpParentGuid As Guid Implements ISousEpreuve.EpParentGuid
    Public Property EpParent As Epreuve Implements ISousEpreuve.EpParent
    Public Property SousEpreuves As ObservableCollection(Of Epreuve) Implements ISousEpreuve.SousEpreuves
End Class
Public Class EpreuveCombinee
    Inherits EpreuveComposee
End Class

和流畅的 API ：

With modelBuilder.Entity(Of EpreuveComposee)
    .HasMany(Function(f) f.SousEpreuves).WithMany().Map(Sub(m)
                                                            m.ToTable("EpreuveSousEpreuves")
                                                            m.MapLeftKey("EpGuid")
                                                            m.MapRightKey("EpParentGuid")
                                                        End Sub)
End With