我有一个滚动条和一个滚动浏览器。
我想使用自己的滚动条滚动ScrollViewer的内容。
这是我的代码：

<StackPanel HorizontalAlignment="Stretch">
    <ScrollBar
        x:Name="TestScrollBar"
        HorizontalAlignment="Stretch"
        Orientation="Horizontal"
        Scroll="TestScrollBar_Scroll"
        Maximum="{Binding ElementName=TestScrollViewer, Path=ExtentWidth, Mode=OneWay}"
        ViewportSize="{Binding ElementName=TestScrollViewer, Path=ViewportWidth, Mode=OneWay}"
        Visibility="Visible"
        Background="Aqua"/> <!--This is set for seeing when/if the ScrollBar is visible-->
    <ScrollViewer
        x:Name="TestScrollViewer"
        ViewChanged="TestScrollViewer_ViewChanged"
        HorizontalAlignment="Stretch"
        HorizontalScrollMode="Auto"
        HorizontalScrollBarVisibility="Auto"> <!--This is set to Auto for now, but should be Disabled/Hidden later-->
        <TextBlock FontSize="144" Text="This is blind text. Ignore this completely. It is only here to fill up the ScrollViewer horizontally."/>
    </ScrollViewer>
</StackPanel>

private void TestScrollBar_Scroll(object sender, ScrollEventArgs e)
{
    TestScrollViewer.ChangeView(e.NewValue, null, null);
}

private void TestScrollViewer_ViewChanged(object sender, ScrollViewerViewChangedEventArgs e)
{
    TestScrollBar.Value = TestScrollViewer.HorizontalOffset;
}

当我运行我的应用程序时，条形图在几毫秒内可见（浅绿色闪光），之后消失。
我使用Live可视树和Live属性资源管理器检查了XAML和代码中设置的所有值，但ScrollBar不可见，即使ScrollViewer的ScrollBar可见。