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我试图在运行我的项目之前添加一个迁移。

尝试添加迁移时出现以下错误

One or more validation errors were detected during model generation:

\tSystem.Data.Entity.Edm.EdmEntityType: : EntityType 'MembershipUser' has no key defined. Define the key for this EntityType.
\tSystem.Data.Entity.Edm.EdmEntitySet: EntityType: EntitySet 'MembershipUsers' is based on type 'MembershipUser' that has no keys defined.

这是课程：

    <Table("aspnet_Membership")>
Public Class UserMembership
    Inherits User

    Public Property ApplicationId As Guid

    Public Property Comment As String

End Class

它的父母：

<ReadOnlyAttribute(True), Table("aspnet_Users")>
Public Class User

    <Key, DatabaseGenerated(DatabaseGeneratedOption.Identity), DisplayName("User Id")>
    Public Property UserId As Guid

    <Required, StringLength(256)>
    Public Property UserName As String

    <Required, StringLength(256)>
    Public Property LoweredUserName As String

    <StringLength(16)>
    Public Property MobileAlias As String

    <Required>
    Public Property IsAnonymous As Boolean

    <Required>
    Public Property LastActivityDate As DateTime
End Class

最后 OnModelCreating：

modelBuilder.Entity(Of MembershipUser)().Map(Sub(m)
                                                 m.MapInheritedProperties()
                                                 m.ToTable("aspnet_Membership")
                                             End Sub)

有人知道我在做什么错吗？

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1 回答 1

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异常谈论 MembershipUser，但您的课程名称为 UserMembership。这是一个错字吗？

于 2012-04-04T07:55:04.533 回答