c# - 如何在 WPF 中触发检查或取消选中事件后启用/禁用复选框？

Question

我为复选框控件编写了一个自定义模板，它在选中时显示绿色，在未选中时显示红色。我希望复选框控件在触发检查/取消选中事件后使其自身禁用 3 秒，然后恢复自身启用。如何才能我将该功能集成到我的自定义模板中吗？

<Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type CheckBox}">
                <Grid x:Name="LayoutRoot">
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="CheckStates">
                                <Storyboard>
                                    <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="grid1">
                                        <EasingDoubleKeyFrame KeyTime="0" Value="0"/>
                                    </DoubleAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                    <Grid x:Name="grid">
                        <Rectangle HorizontalAlignment="Left" Height="22" Stroke="White" VerticalAlignment="Top" Width="22">
                            <Rectangle.Fill>
                                <LinearGradientBrush EndPoint="0.5,0" StartPoint="0.5,1">
                                    <GradientStop Color="#FF86CC6E" Offset="0.022"/>
                                    <GradientStop Color="#FF47E211" Offset="0.81"/>
                                </LinearGradientBrush>
                            </Rectangle.Fill>
                        </Rectangle>
                        <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" TextWrapping="Wrap" FontFamily="Arial Black" FontSize="10.667" Text="{TemplateBinding Content}" />
                    </Grid>
                    <ContentPresenter x:Name="contentPresenter" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Content=""/>
                    <Grid x:Name="grid1">
                        <Rectangle HorizontalAlignment="Left" Height="22" Stroke="White" VerticalAlignment="Top" Width="22">
                            <Rectangle.Fill>
                                <LinearGradientBrush EndPoint="0.5,0" StartPoint="0.5,1">
                                    <GradientStop Color="#FFDE6666" Offset="0.022"/>
                                    <GradientStop Color="#FFFB2611" Offset="0.81"/>
                                </LinearGradientBrush>
                            </Rectangle.Fill>
                        </Rectangle>
                        <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" TextWrapping="Wrap" FontFamily="Arial Black" FontSize="10.667" Text="{TemplateBinding Content}" />
                    </Grid>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Answer 1

至少有一种使用触发器的方法，如下所示:

<ControlTemplate TargetType="{x:Type CheckBox}">
      <ControlTemplate.Resources>
        <Storyboard x:Key="ffIsEnabled" Storyboard.TargetProperty="IsEnabled">
           <BooleanAnimationUsingKeyFrames Storyboard.TargetProperty="IsEnabled">
               <DiscreteBooleanKeyFrame KeyTime="0" Value="False"/>
               <DiscreteBooleanKeyFrame KeyTime="0:0:3" Value="True"/>
           </BooleanAnimationUsingKeyFrames>
        </Storyboard>
      </ControlTemplate.Resources>
      <ControlTemplate.Triggers>
         <Trigger Property="IsChecked" Value="True">
            <Trigger.EnterActions>
               <BeginStoryboard Storyboard="{StaticResource ffIsEnabled}"/>
            </Trigger.EnterActions>
            <Trigger.ExitActions>
               <BeginStoryboard Storyboard="{StaticResource ffIsEnabled}"/>
            </Trigger.ExitActions>
         </Trigger>
      </ControlTemplate.Triggers>
      <!-- ... -->
</ControlTemplate>