C# 将AdaptiveTrigger.MinWindowWidth设置为TemplateBinding会导致触发器永远不会执行

目前，我在generic.xaml中的一个自定义控件中有这段代码

<VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="VisualStateGroup">
                            <VisualState x:Name="VisualStateNarrow">
                                <VisualState.StateTriggers>
                                    <AdaptiveTrigger x:Name="VisualStateNarrowTrigger" MinWindowWidth="{TemplateBinding VisualStateNarrowMinWidth}" />
                                </VisualState.StateTriggers>
                                <VisualState.Setters>
                                    <Setter Target="PART_SPACER.Visibility" Value="Visible" />
                                </VisualState.Setters>
                            </VisualState>
                            <VisualState x:Name="VisualStateNormal">
                                <VisualState.StateTriggers>
                                    <AdaptiveTrigger x:Name="VisualStateNormalTrigger" MinWindowWidth="{TemplateBinding VisualStateNormalMinWidth}"/>
                                </VisualState.StateTriggers>
                                <VisualState.Setters/>
                            </VisualState>
                        </VisualStateGroup>
</VisualStateManager.VisualStateGroups>

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将MinWindowWidth设置为一个整数，如0表示窄窗口，521表示普通窗口，这样可以使其正常执行。如何使绑定与此一起工作？

绑定到TemplatedParent，如下所示：

<AdaptiveTrigger x:Name="VisualStateNarrowTrigger" MinWindowWidth="{Binding VisualStateNarrowMinWidth, RelativeSource={RelativeSource TemplatedParent}}" />

<AdaptiveTrigger x:Name="VisualStateNarrowTrigger" MinWindowWidth="{Binding VisualStateNarrowMinWidth, RelativeSource={RelativeSource TemplatedParent}}" />