
实现代码
<TextBlock Text="录像中" FontSize="48" Foreground="#ED4646" HorizontalAlignment="Center" FontWeight="Medium" x:Name="TextBlockRecording">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="FrameworkElement.Loaded">
<BeginStoryboard>
<Storyboard BeginTime="0:0:0" Duration="0:0:5" AutoReverse="True" RepeatBehavior="Forever">
<ColorAnimation From="#ED4646" To="#F0F2F7" RepeatBehavior="Forever" Storyboard.TargetProperty="(TextBlock.Foreground).(SolidColorBrush.Color)" Storyboard.TargetName="TextBlockRecording">
</ColorAnimation>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
来源:https://www.cnblogs.com/wdw984/p/12382385.html