用於windows phone的VB silverlight「句柄子句需要在包含類型或其基類型中定義的WithEvents變量」

Question

當我從.xaml文件中選擇一個按鈕，然後點擊右側的事件（以便設置自來水事件），它自動生成這樣子：

Private Sub btn(ByRef sender As Object, e As System.Windows.RoutedEventArgs) Handles btn.Tap 

End Sub 

但它也有這樣的錯誤：

Error 1 Handles clause requires a WithEvents variable defined in the containing type or one of its base types.

有什麼建議？謝謝！

Answer 1

Public WithEvents btn As Button 正好在子的上方以便發送錯​​誤！