本文整理汇总了VB.NET中System.Data.Linq.Mapping.InheritanceMappingAttribute类的典型用法代码示例。如果您正苦于以下问题:VB.NET InheritanceMappingAttribute类的具体用法?VB.NET InheritanceMappingAttribute怎么用?VB.NET InheritanceMappingAttribute使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了InheritanceMappingAttribute类的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1:
Public Enum ShapeType As Integer
Square = 0
Circle = 1
End Enum
<Table(Name:="Shape")> _
<InheritanceMapping(Code:=ShapeType.Square, Type:=GetType(Square), _
IsDefault:=True)> _
<InheritanceMapping(Code:=ShapeType.Circle, Type:=GetType(Circle))> _
Public MustInherit Class Shape
<Column(IsDiscriminator:=True)> _
Public ShapeType As ShapeType = 0
End Class
Public Class Square
Inherits Shape
<Column()> _
Public Side As Integer = 0
End Class
Public Class Circle
Inherits Shape
<Column()> _
Public Radius As Integer = 0
End Class
示例2:
' Unmapped and not queryable.
Class A
End Class
' Mapped and queryable.
<Table()> _
<InheritanceMapping(Code:="B", Type:=GetType(B), _
IsDefault:=True)> _
<InheritanceMapping(Code:="D", Type:=GetType(D))> _
Class B
Inherits A
End Class
' Unmapped and not queryable.
Class C
Inherits B
End Class
' Mapped and queryable.
Class D
Inherits C
End Class
' Unmapped and not queryable.
Class E
Inherits D
End Class