RoutedEvent TextBox.LostFocus在我的WPF应用程序中不工作

Question

我正在使用故事板使用WPF动画。我想要的是在我的文本框获得焦点时尽快淡出页面的所有内容，并在焦点从文本框中移除后立即淡入淡出所有内容。要做到这一点，我有以下没有代码的XAML。

<Page.Triggers> 
    <EventTrigger RoutedEvent="TextBox.GotFocus"> 
    <BeginStoryboard> 
     <Storyboard> 
      <DoubleAnimation 
       Storyboard.TargetName="Grid1" 
       Storyboard.TargetProperty="Opacity" 
       From="1" To="0.1" Duration="0:0:0.2" 
       AutoReverse="False" > 
      </DoubleAnimation> 
     </Storyboard> 
    </BeginStoryboard> 
    </EventTrigger> 
    <EventTrigger RoutedEvent="TextBox.LostFocus"> 
    <BeginStoryboard> 
     <Storyboard> 
      <DoubleAnimation 
       Storyboard.TargetName="Grid1" 
       Storyboard.TargetProperty="Opacity" 
       From="0.1" To="1" Duration="0:0:0.2" 
       AutoReverse="False"> 
      </DoubleAnimation> 
     </Storyboard> 
    </BeginStoryboard> 
    </EventTrigger> 

将焦点移到了文本框，我有以下按钮：

<Button 
     Name="SearchButton" 
     Height="30" Width="30" 
     Grid.Column="1" 
     Focusable="True" 
     IsHitTestVisible="True" 
     Style="{StaticResource SearchButton}" 
     Padding="3,3,3,3" 
     Margin="3,3,3,3" Click="Button_Click"/> 

当我运行应用程序，点击文本框，使淡出做工精细。但是当我点击按钮时，淡入不会踢入。

任何人都可以给我一些见解吗？

Answer 1

你应该把你的触发器在TextBox直接，而不是在Page级别：

<TextBox> 
    <TextBox.Triggers> 
     <EventTrigger RoutedEvent="TextBox.GotFocus"> 
     <BeginStoryboard> 
      <Storyboard> 
      <DoubleAnimation 
       Storyboard.TargetName="Grid1" 
       Storyboard.TargetProperty="Opacity" 
       From="1" To="0.1" Duration="0:0:0.2" 
       FillBehavior="HoldEnd"> 
      </DoubleAnimation> 
      </Storyboard> 
     </BeginStoryboard> 
     </EventTrigger> 
     <EventTrigger RoutedEvent="TextBox.LostFocus"> 
     <BeginStoryboard> 
      <Storyboard> 
      <DoubleAnimation 
       Storyboard.TargetName="Grid1" 
       Storyboard.TargetProperty="Opacity" 
       From="0.1" To="1" Duration="0:0:0.2" 
       FillBehavior="Stop"> 
      </DoubleAnimation> 
      </Storyboard> 
     </BeginStoryboard> 
     </EventTrigger> 
    </TextBox.Triggers> 
    </TextBox> 

否则，故事板将被触发为每对Page因为每个UIElement的每一个GotFocus和LostFocus路由事件这些事件的冒泡策略。