WPF实现8个按钮循环闪烁

在WPF（Windows Presentation Foundation）中，可以使用`DispatcherTimer`和`VisualStateManager`来实现八个按钮循环闪烁的效果。这里是一个简单的示例：

<Window x:Class="ButtonFlashingApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Grid>
        <StackPanel>
            <!-- 这里放置8个按钮 -->
            <Button Content="Button 1" />
            <Button Content="Button 2" />
            <!-- ...重复七次... -->
        </StackPanel>

        <!-- 创建状态管理器和定时器 -->
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup>
                <VisualState Name="Off" />
                <VisualState Name="On" />

                <Storyboard x:Name="FlashStoryboard">
                    <ColorAnimation Storyboard.TargetProperty="(Control.Background).(SolidColorBrush.Color)"
                                     To="White" Duration="0:0:0.5" AutoReverse="True"
                                     RepeatBehavior="Forever"/>
                </Storyboard>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>

        <!-- 当定时器触发时改变按钮的状态 -->
        <VisualStateManager>
            <VisualStateManager.Transitions>
                <Transition From="Off" To="On" GeneratedDuration="0:0:0.5">
                    <BeginStoryboard>
                        <Storyboard>
                            <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetProperty="(UIElement.IsEnabled)">
                                <DiscreteObjectKeyFrame KeyTime="0" Value="{Binding ElementName=buttonFlasher, Path=IsEnabled}"/>
                            </ObjectAnimationUsingKeyFrames>
                        </Storyboard>
                    </BeginStoryboard>
                </Transition>
                <Transition From="On" To="Off" GeneratedDuration="0:0:0.5">
                    <BeginStoryboard>
                        <Storyboard>
                            <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetProperty="(UIElement.IsEnabled)">
                                <DiscreteObjectKeyFrame KeyTime="0" Value="{Binding ElementName=buttonFlasher, Path=IsEnabled, Converter={StaticResource NotConverter}}"/>
                            </ObjectAnimationUsingKeyFrames>
                        </Storyboard>
                    </BeginStoryboard>
                </Transition>
            </VisualStateManager.Transitions>
        </VisualStateManager>

        <!-- 定义一个属性来控制按钮的可见性 -->
        <local:ToggleButtonControl x:Name="buttonFlasher" IsChecked="{x:Null}" />
    </Grid>
</Window>

<!-- 自定义转换器 NotConverter -->
<Style TargetType="ToggleButton">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="ToggleButton">
                <Grid Background="{TemplateBinding Background}">
                    <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                </Grid>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsChecked" Value="False">
                        <Setter Property="Visibility" Value="{TemplateBinding IsChecked, Converter={StaticResource NotConverter}}"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<!-- 转换器类 -->
<local:NotConverter x:Key="NotConverter">
    <local:NotConverter.Converter逻辑>
        <lambda:真假倒置逻辑 x:TypeArguments="System:Boolean"/>
    </local:NotConverter.Converter逻辑>
</local:NotConverter>

在这个例子中，我们创建了一个`ToggleButtonControl`自定义控件作为开关，它会切换八个按钮的可见性。`VisualStateManager`用于控制按钮的显示和隐藏，并通过`DispatcherTimer`每隔一段时间更改`ToggleButtonControl`的状态。