還需要給ScrollViewer註冊一個滑鼠滾輪事件！

XAML：

<ScrollViewer x:Name="scrollViewer" Width="950" Height="480" VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Hidden" PreviewMouseWheel="ScrollViewer_PreviewMouseWheel">

    // ......

</ScrollViewer >

後臺程式碼實現：

// 使得ScrollViewer可以滾動
private
 
 void ScrollViewer_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
    var eventArg = new MouseWheelEventArgs(e.MouseDevice, e.Timestamp, e.Delta);
    eventArg.RoutedEvent = UIElement.MouseWheelEvent;
    eventArg.Source = sender;
    scrollViewer.RaiseEvent(eventArg);
}

吐個槽：居然還有ScrollView控制元件不帶滾動的。。。那要你有何用？？【攤手