WPF 去除 DropShadow 效果

Question

现在如果我点击按钮 A，按钮 B 会显示 DropShadow 效果:

 Private Sub ButtonA_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles ButtonA.Click

 Dim objDropShadow As New DropShadowEffect
            objDropShadow.ShadowDepth = 0
            objDropShadow.BlurRadius = 30
            objDropShadow.Color = Colors.GreenYellow

            Me.ButtonB.Effect = objDropShadow

End Sub

如果我单击按钮 C，我将如何从按钮 B 中删除 DropShadow 效果？

Answer 1

尝试一下

Me.ButtonB.Effect = Nothing        // VB.Net
this.ButtonB.Effect = null;        // C#