继承修饰符（在类上）

Created: November-22, 2018

继承

指定基类（或父类）

Public Class Person
End Class

Public Class Customer
    Inherits Person

End Class

'One line notation
Public Class Student : Inherits Person
End Class

可能的对象：

Dim p As New Person
Dim c As New Customer
Dim s As New Student

NotInheritable

阻止程序员将该类用作基类。

Public NotInheritable Class Person
End Class

可能的对象：

Dim p As New Person

为 MustInherit

指定该类仅用作基类。（摘要课）

Public MustInherit Class Person
End Class

Public Class Customer
    Inherits Person
End Class

可能的对象：

Dim c As New Customer