如何使用 VisualState 更改 Visibility 属性

我无法Visibility通过VisualStateManagercustom更改属性StateTrigger。尝试了不同的选择。

这是我自己UserControl：

<DataTemplate x:Key="TemplateA">
    <UserControl>
        <StackPanel Padding="5,0,0,5"
                    x:Name="StackA"
                    Orientation="Vertical"
                    Margin="10">
            <VisualStateManager.VisualStateGroups>
                <VisualStateGroup x:Name="NowState">
                    <VisualState x:Name="Now">
                        <VisualState.StateTriggers>
                            <triggers:BooleanDataTrigger
                                triggers:BooleanDataTrigger.TriggerValue="True"
                                triggers:BooleanDataTrigger.DataValue="{Binding IsRec}"/>
                        </VisualState.StateTriggers>
                        <VisualState.Setters>
                            <Setter Target="StackA.Background" Value="{StaticResource SystemControlHighlightListLowBrush}"/>
                        </VisualState.Setters>
                    </VisualState>
                    <VisualState x:Name="NotNow">
                        <VisualState.StateTriggers>
                            <triggers:BooleanDataTrigger
                                triggers:BooleanDataTrigger.TriggerValue="False"
                                triggers:BooleanDataTrigger.DataValue="{Binding IsRec}"/>
                        </VisualState.StateTriggers>
                        <VisualState.Setters>
                            <Setter Target="StackA.Background" Value="Transparent"/>
                        </VisualState.Setters>
                    </VisualState>
                </VisualStateGroup>
            </VisualStateManager.VisualStateGroups>
            <TextBlock x:Name="StatusText"
                       Text="Now watching:"
                       Style="{StaticResource BaseTitleStyle}"
                       HorizontalTextAlignment="Center"/>
            <TextBlock Text="{Binding FirstTitle}"
                       TextTrimming="CharacterEllipsis"
                       HorizontalTextAlignment="Center"
                       Style="{StaticResource TitleStyle}"/>
        </StackPanel>
    </UserControl>
</DataTemplate>

属性Background毫无疑问地发生变化。

的第一个选项Visibility也可以通过Setter任何值的文本看到IsRec：

<Setter Target="StatusText.Visibility" Value="Collapsed"/>

通过Storyboard相同的第二个选项：

 <Storyboard>
     <ObjectAnimationUsingKeyFrames Storyboard.TargetName="StatusText" Storyboard.TargetProperty="Visibility">
         <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
     </ObjectAnimationUsingKeyFrames>
 </Storyboard>

目前它是通过转换器完成的，但我想知道为什么不能通过VisualStateManager.