UWP，对于mediaplayerelement，如何覆盖内置播放按钮？

<Style x:Key="CustomMediaPlayerElementStyle" TargetType="MediaPlayerElement">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="MediaPlayerElement">
                <Grid>
                    <!-- 在这里添加自定义的播放按钮或其他UI元素 -->
                    <Button Content="自定义播放按钮" Click="CustomPlayButton_Click"/>
                    <!-- 使用MediaPlayerPresenter来显示视频内容 -->
                    <MediaPlayerPresenter x:Name="MediaPlayerPresenter"/>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<MediaPlayerElement Style="{StaticResource CustomMediaPlayerElementStyle}" Source="video.mp4"/>

private void CustomPlayButton_Click(object sender, RoutedEventArgs e)
{
    // 在这里添加自定义的播放逻辑
    mediaPlayer.Play();
}