如何在WPF中处理鼠标滚轮点击事件？

<ListBox x:Name="MyListBox" />

MyListBox.PreviewMouseWheel += MyListBox_PreviewMouseWheel;

private void MyListBox_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
    // 在这里处理鼠标滚轮点击事件
}

private void MyListBox_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
    if (e.Delta > 0)
    {
        // 向上滚动
    }
    else
    {
        // 向下滚动
    }
}