c# WPF 如何在不声明新源的情况下从 mediaended 事件处理程序重复 MediaElement 播放? [英] c# WPF how to repeat MediaElement playback from mediaended event handler without declaring new source?

问题描述

我正在 WPF 中播放视频.我希望它循环播放，所以我所做的是当 mediaended 事件触发时，我播放我的视频.所以这会让我陷入困境.问题是为什么我必须再次创建新源?为什么我不能直接叫'play'?

I'm playing a video in WPF.i want it to loop so what I did is when the mediaended event fires, I play back my video. so this will get me a loop. prob is why do u I have to create new source again? why can't I just call 'play'?

出于某种原因，我不想在 XAML 中这样做.

I don't want to do it in XAML as for some reason.

看看我的代码片段:

string startPath System.IO.Path.GetDirectoryName(Process.GetCurrentProcess().MainModule.FileName);


public Window1()
    {
        InitializeComponent();
        media.Source = new Uri(startPath + @"playlist.wpl");
        media.play();
    }

private void Media_Ended(object sender, EventArgs e)
    {
        media.Source = new Uri(startPath + @"playlist.wpl"); //if i dont put this line, video wont play..seems like it cant get the source
        media.Play();
    }

或者是否有适当的方法来循环不是在 XAML 中而是在此处的 .cs 文件中?

or is there a proper way to loop NOT in XAML but in here .cs file?

推荐答案

不要在 Media_Ended 处理程序的开头重置 Source，而是尝试将 Position 值设置回起始位置.Position 属性是一个 TimeSpan，因此您可能想要...

Instead of resetting the Source at the start of your Media_Ended handler, try setting the Position value back to the start position. The Position property is a TimeSpan so you probably want something like...

private void Media_Ended(object sender, EventArgs e)
{
    media.Position = TimeSpan.Zero;
    media.Play();
}

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