如何在UWP中使按钮闪烁？

<Button x:Name="myButton" Content="Click me" />

<Button x:Name="myButton" Content="Click me">
    <VisualStateManager.VisualStateGroups>
        <VisualStateGroup x:Name="ButtonStates">
            <VisualState x:Name="Normal" />
            <VisualState x:Name="Flashing">
                <Storyboard RepeatBehavior="Forever">
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="myButton"
                                                   Storyboard.TargetProperty="Visibility">
                        <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{x:Static Visibility.Visible}" />
                        <DiscreteObjectKeyFrame KeyTime="0:0:0.5" Value="{x:Static Visibility.Collapsed}" />
                    </ObjectAnimationUsingKeyFrames>
                </Storyboard>
            </VisualState>
        </VisualStateGroup>
    </VisualStateManager.VisualStateGroups>
</Button>

VisualStateManager.GoToState(myButton, "Flashing", true);