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ASP.NET入門教程 9.4.2 繼承[3]

2013-11-13 10:49:25  來源: .NET編程 

    ()選擇Warning() As String項(可以忽略其他選項)並按下Return看看所創建代碼的功能如何刪除當前的回車行並添加一個新行

    Public Overrides Function Warning() As String

    Return No warning youll have to shout yourself

    End Function

    ()保存並關閉該類文件

    ()創建一個名為Inheritance aspx的新Web Form添加個按鈕和個標簽確保緊靠Wheels的標簽為Labell緊靠Speed的標簽為Labe緊靠Warning的標簽為Labe可以使用按鈕的Text屬性修改按鈕上的文本顯示

    ()為這個按鈕創建Click事件的事件處理程序對於Car按鈕

 

Protected Sub Button_Click(ByVal sender As Object ByVal e As SystemEventArgs) Handles ButtonClick

        Dim myTransport As New Car()

        LabelText = myTransportWheelsToString()

        LabelText = myTransportTopSpeedToString()

        LabelText = myTransportWarning()

    End Sub

    ()對Bike按鈕

 

Protected Sub Button_Click(ByVal sender As Object ByVal e As SystemEventArgs) Handles ButtonClick

        Dim myTransport As New Bike()

        LabelText = myTransportWheelsToString()

        LabelText = myTransportTopSpeedToString()

        LabelText = myTransportWarning()

    End Sub

    ()對Skateboard按鈕

 

 Protected Sub Button_Click(ByVal sender As Object ByVal e As SystemEventArgs) Handles ButtonClick

        Dim myTransport As New Skateboard()

        LabelText = myTransportWheelsToString()

        LabelText = myTransportTopSpeedToString()

        LabelText = myTransportWarning()

    End Sub

    ()在Solution Explorer中右擊Inheritanceaspx從該菜單中選擇Set As Start Page

    ()按下F鍵運行該頁面單擊這個按鈕注意標簽上面顯示的內容

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From:http://tw.wingwit.com/Article/program/net/201311/14581.html
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