播放视频

<Window x:Class="播放视频.MainWindow"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        Title="用MediaElement播放视频示例" Height="350" Width="525">    <StackPanel>        <MediaElement x:Name="vedio" Stretch="Fill" Height="200" MediaOpened="vedio_MediaOpened"/>        <Slider Name="timelineSlider" Margin="0,10,0,0"/>        <StackPanel Margin="0,10,0,0" Orientation="Horizontal" HorizontalAlignment="Center">            <Button Width="60" Margin="3" Name="buttonPlay">播放</Button>            <Button Width="60" Margin="3" Name="buttonPause">暂停</Button>            <Button Width="60" Margin="3" Name="buttonResume">继续</Button>            <Button Width="60" Margin="3" Name="buttonStop">停止</Button>            <StackPanel.Triggers>                <EventTrigger RoutedEvent="Button.Click" SourceName="buttonPlay">                    <BeginStoryboard Name="begin">                        <Storyboard SlipBehavior="Slip">                            <MediaTimeline Source="[六人行.第一季][Friends.S01E01][圣城家园dream2008.cn][中英双字幕].rmvb"                                           Storyboard.TargetName="vedio" CurrentTimeInvalidated="MediaTimeChanged"/>                        </Storyboard>                    </BeginStoryboard>                </EventTrigger>                <EventTrigger RoutedEvent="Button.Click" SourceName="buttonPause">                    <PauseStoryboard BeginStoryboardName="begin"/>                </EventTrigger>                <EventTrigger RoutedEvent="Button.Click" SourceName="buttonResume">                    <ResumeStoryboard BeginStoryboardName="begin"/>                </EventTrigger>                <EventTrigger RoutedEvent="Button.Click" SourceName="buttonStop">                    <StopStoryboard BeginStoryboardName="begin"/>                </EventTrigger>            </StackPanel.Triggers>        </StackPanel>    </StackPanel></Window>