在wpf中如何让MediaElement的视频循环播放

MediaElement原始的播放是只播放一遍；如何设置让MediaElement播放 的视频或者音频循环播放，解决如下：

修改MediaElement模版

 <MediaElement  Name="myMediaElement" Margin="13,35,14,0"  Height="100" VerticalAlignment="Top">
            <MediaElement.Triggers>
                <EventTrigger RoutedEvent="MediaElement.Loaded">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <MediaTimeline Source="banner[2].avi" Storyboard.TargetName="myMediaElement"  
                 RepeatBehavior="Forever" />
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
            </MediaElement.Triggers>
        </MediaElement>

红色标注的是多媒体文件的路径；