WPF 实现视频循环播放

方法1：后台代码处理MediaEnded事件

 xaml:

<MediaElement Name="player" MediaEnded="player_MediaEnded"  Source="Videos/test.wmv" />

cs:

 private void player_MediaEnded(object sender, RoutedEventArgs e)
        {
            //设置一下视频进度，确保从头开始播放
            player.Position = TimeSpan.Zero;
            player.Play();
        }

方法2：xaml中处理

MediaElement.Source 不需要赋值

使用触发器播放动画，设置动画的RepeatBehavior="Forever"即可实现循环播放

<MediaElement Name="player">
            <MediaElement.Triggers>
                <EventTrigger RoutedEvent="MediaElement.Loaded">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <MediaTimeline Source="Videos/test.wmv" Storyboard.TargetName="player" RepeatBehavior="Forever" />
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
            </MediaElement.Triggers>
        </MediaElement>

注：视频的属性设置如下：