ASP.NET入門教程 9.4.2 繼承[2]

    （）在同一個文件中創建另一個類Car:

 

Public Class Car

    Inherits Vehicle

    Public Sub New()

        _wheels =

        _topSpeed =

        _warningSound = Honk

    End Sub

End Class

    （）現在再創建另一個類Bike:

 

Public Class Bike

    Inherits Vehicle

    Public Sub New()

        _wheels =

        MyBaseTopSpeed =

        _warningSound = Ring Ring

    End Sub

End Class

    （）繼續創建另一個類Skateboard:

 

Public Class Skateboard

    Inherits Vehicle

    Public Sub New()

        _wheels =

        _topSpeed =

    End Sub

    Public Overrides Function Warning() As String

        Return No warning youll have to shout yourself

    End Function

End Class

    在End Sub和End Class之間輸入以下代碼

    Public Overrides

    現在按下空格鍵可以看到彈出了一個小小的幫助提示

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From:http://tw.wingwit.com/Article/program/net/201311/14582.html