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Jeder, bitte helfen Sie mir ersten Verbundprimärschlüssel Code zu definieren, kann es nicht wie unten beide Fewokode definieren:Wie Composite Primärschlüssel Code definieren erste
Public Class TaskMapper
Overridable Property TaskType As TaskType
Overridable Property Task As Task
End Class
Public Class TaskType
Inherits MasterData
End Class
Public Class Task
Inherits MasterData
End Class
Public MustInherit Class MasterData
Public Property Code() As String
Public Property Name() As String
Public Property Status() As String
End Class
Protected Overrides Sub OnModelCreating(ByVal modelBuilder As DbModelBuilder)
'on this command raised an error
modelBuilder.Entity(Of TaskMapper).HasKey(Function(tm) New With {tm.Task.Code, tm.TaskType.Code})
End Sub