WinRT 中的数据触发器? [英] DataTrigger in WinRT?

问题描述

我找到了 EventTrigger 在 WinRT 参考中，但是，我无法找到 DataTrigger.我也无法在应用程序中使用它.

I was able to find EventTrigger in the WinRT reference, however, I wasn't able to find DataTrigger. I wasn't able to use it in an application either.

谁能确认 WinRT 中确实缺少 DataTrigger?EventTrigger 是 WinRT 中唯一可用的触发器吗?

Can anyone confirm that DataTrigger is really missing in WinRT? Is EventTrigger the only trigger available in WinRT?

推荐答案

我不知道它什么时候改变，但我将 DataTriggerBehavior 和 GoToStateAction 结合起来应该可以解决你的问题问题...

I don't know when it changed but i have DataTriggerBehavior and GoToStateAction combining them should solve your problem...

命名空间导入

xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions" 
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" 
xmlns:Interactivity="using:Microsoft.Xaml.Interactivity" 
xmlns:Core="using:Microsoft.Xaml.Interactions.Core"

ViewSateManager 放置在根元素上

ViewSateManager place on root element

<VisualStateManager.VisualStateGroups>
    <VisualStateGroup x:Name="Common">
        <VisualStateGroup.Transitions>
            <VisualTransition GeneratedDuration="0" To="Online">
                <Storyboard>
                    <ColorAnimation Duration="0" To="Lime" Storyboard.TargetProperty="(TextBlock.Foreground).(SolidColorBrush.Color)" Storyboard.TargetName="Name" />
                </Storyboard>
            </VisualTransition>
            <VisualTransition GeneratedDuration="0" To="Offline">
                <Storyboard>
                    <ColorAnimation Duration="0" To="Red" Storyboard.TargetProperty="(TextBlock.Foreground).(SolidColorBrush.Color)" Storyboard.TargetName="Name" />
                </Storyboard>
            </VisualTransition>
        </VisualStateGroup.Transitions>
        <VisualState x:Name="Online" />
        <VisualState x:Name="Offline" />
    </VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Interactivity:Interaction.Behaviors>
    <Core:DataTriggerBehavior Binding="{Binding Active}" Value="True">
        <Core:GoToStateAction StateName="Online" />
    </Core:DataTriggerBehavior>
    <Core:DataTriggerBehavior Binding="{Binding Active}" Value="False">
        <Core:GoToStateAction StateName="Offline" />
    </Core:DataTriggerBehavior>
</Interactivity:Interaction.Behaviors>

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