將多個觸發器重構爲一個

Question

是否有可能將其減少爲單個觸發器？

<Style x:Key="StatusTextBlock" TargetType="{x:Type TextBlock}"> 
    <Style.Triggers> 
     <DataTrigger Binding="{Binding Path=Text, 
      RelativeSource={RelativeSource Self}}" Value="Running"> 
      <Setter Property="Foreground" Value="Green"></Setter> 
     </DataTrigger> 
     <DataTrigger Binding="{Binding Path=Text, 
      RelativeSource={RelativeSource Self}}" Value="Paused"> 
      <Setter Property="Foreground" Value="Yellow"></Setter> 
     </DataTrigger> 
     <DataTrigger Binding="{Binding Path=Text, 
      RelativeSource={RelativeSource Self}}" Value="Stopped"> 
      <Setter Property="Foreground" Value="Red"></Setter> 
     </DataTrigger> 
    </Style.Triggers> 
</Style> 

Answer 1

如果"Running"和"Stopped"是僅有的兩個可用的情況下，你可以設置一個作爲屬性，並且只使用一個觸發器：

<Style x:Key="StatusTextBlock" TargetType="{x:Type TextBlock}"> 
    <Setter Property="Foreground" Value="Green" /> <!--default case == Running --> 
    <Style.Triggers> 
     <DataTrigger Binding="{Binding Path=Text, 
      RelativeSource={RelativeSource Self}}" Value="Stopped"> 
      <Setter Property="Foreground" Value="Red"></Setter> 
     </DataTrigger> 
    </Style.Triggers> 
</Style>