[英]Combination of WPF DataTrigger and EventTrigger isn't working
我对我的代码有一个小疑问:
<Style TargetType="{x:Type Grid}">
<Setter Property="Visibility" Value="Collapsed"/>
<Style.Triggers>
<DataTrigger Binding="{Binding Status.IsObjectSaving}" Value="True">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
<Trigger Property="Visibility" Value="Visible">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetProperty = "Opacity"
From ="1"
To = "0"
BeginTime = "0:0:0"
Duration = "0:0:2" />
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty = "Visibility">
<DiscreteObjectKeyFrame KeyTime="0:0:2"
Value="{x:Static Visibility.Collapsed}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
</Trigger>
</Style.Triggers>
</Style>
当我的对象将被保存,因此网格应打开并显示一些信息。 当我第一次启动该程序时,它可以工作,但是第二次它不起作用。 所以我希望你能帮助我。
谢谢丹尼尔
ps对不起,我的英语太糟糕了!
谢谢回答! 我尝试使用以下代码设置值:
<DataTrigger Binding="{Binding Status.IsObjectSaving}" Value="True">
<DataTrigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetProperty = "Opacity"
From = "0"
To = "1"
BeginTime = "0:0:0"
Duration = "0:0:2" />
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty = "Visibility">
<DiscreteObjectKeyFrame KeyTime="0:0:2"
Value="{x:Static Visibility.Visible}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</DataTrigger.EnterActions>
<DataTrigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetProperty = "Opacity"
From = "1"
To = "0"
BeginTime = "0:0:2"
Duration = "0:0:2" />
<ObjectAnimationUsingKeyFrames
Storyboard.TargetProperty = "Visibility">
<DiscreteObjectKeyFrame KeyTime="0:0:2"
Value="{x:Static Visibility.Collapsed}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</DataTrigger.ExitActions>
</DataTrigger>
但这不起作用。 那么,您可以帮助我以正确的方式修改代码吗?
谢谢
丹尼尔
动画会更改优先级更高的值,一旦以这种方式更改了可见性,触发器将无法对其进行修改。 您可以用动画(输入和退出操作)替换设置器,这样它们就具有相同的优先级。
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