WPF 交替 DataGrid 行背景颜色优先于动画颜色

Question

我有一个 WPF DataGrid，其行将闪烁红色以响应从服务器接收到的事件。这按预期工作，直到我添加浅灰色的交替颜色。行不再闪烁红色，而是闪烁浅灰色。

我知道有优先权，并发现了类似的帖子（WPF DataGrid AlternatingRowBackground 覆盖背景的 Style DataTrigger），但我正在使用动画。任何帮助将不胜感激。

 <Style.Resources>
     <Storyboard x:Key="FadeStoryboard" TargetProperty="Background.Color">
         <DoubleAnimation Storyboard.TargetProperty="Opacity"
          From=".5" To="1" Duration="0:0:0.5"
          RepeatBehavior="Forever" AutoReverse="True"/>
     </Storyboard>
 </Style.Resources>
 
<!-- New event received from server ...alert operator by blinking red -->
<Style.Triggers>
    <DataTrigger Binding="{Binding Acknowledged}"  Value="False">
        <Setter Property="Background" Value="red" />
        <DataTrigger.EnterActions>
            <BeginStoryboard x:Name="Blink" Storyboard="{StaticResource FadeStoryboard}"/>
        </DataTrigger.EnterActions>
    </DataTrigger>
                  
    <!-- Operator has acknowledged event; change background to normal -->      
    <DataTrigger Binding="{Binding Acknowledged}"  Value="True">
        <Setter Property="Background" Value="Transparent"/>
    </DataTrigger>
</Style.Triggers>

我尝试在 内创建触发器，但它被忽略了。

Answer 1

我相信解决方案与您链接的帖子类似。然而，问题是你承认的将事情恢复正常的触发因素正在覆盖条带。

这对我有用：

<!-- Don't forget to add the alternation count property to the Grid -->
<DataGrid ItemsSource="{Binding Datas}" AlternationCount="2">
    <DataGrid.Resources>
        <Style TargetType="DataGridRow">
            <Style.Resources>
                <Storyboard x:Key="FadeStoryboard" TargetProperty="Background.Color">
                    <DoubleAnimation Storyboard.TargetProperty="Opacity" From=".5" To="1" Duration="0:0:0.5" RepeatBehavior="Forever" AutoReverse="True" />
                </Storyboard>
            </Style.Resources>

            <!-- This handles the non-triggered/default color -->
            <Setter Property="Background" Value="Transparent" />

            <!-- New event received from server ...alert operator by blinking red -->
            <Style.Triggers>

                <Trigger Property="AlternationIndex" Value="1">
                    <Setter Property="Background" Value="Gray" />
                </Trigger>
                <DataTrigger Binding="{Binding Acknowledged}" Value="False">
                    <Setter Property="Background" Value="red" />
                    <DataTrigger.EnterActions>
                        <BeginStoryboard x:Name="Blink" Storyboard="{StaticResource FadeStoryboard}" />
                    </DataTrigger.EnterActions>
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </DataGrid.Resources>
</DataGrid>