如何播放 WPFmediaElement 的一部分

发布于 2024-11-05 16:14:59 字数 704 浏览 4 评论 0原文

我需要播放 Mediaelement 的一部分，例如从第二个 0:45 到 0:55 秒

我尝试使用 mediaelement 位置属性，这里是代码

            Dim mytimeline As New MediaTimeline
            Dim mc As MediaClock

            FReveal1.Visibility = Windows.Visibility.Visible

            FReveal1.Source = New Uri("videos\Front-Game-Answer-Reveals.wmv", UriKind.Relative)

            FReveal1.Position = New TimeSpan(0, 0, 4)

            mytimeline.Source = FReveal1.Source
            mytimeline.Duration = (TimeSpan.FromMilliseconds(5000))
            mc = myTimeLine.CreateClock()
            FReveal1.Clock = mc
            FReveal1.Play()

但我收到以下错误：“分配时钟时无法执行此操作到媒体播放器。”

还有另一种方法可以做到这一点吗？

谢谢

原文

I need to play a section of the Mediaelement for example from the second 0:45 to 0:55 sec

I tried using the mediaelement position property here is the code

            Dim mytimeline As New MediaTimeline
            Dim mc As MediaClock

            FReveal1.Visibility = Windows.Visibility.Visible

            FReveal1.Source = New Uri("videos\Front-Game-Answer-Reveals.wmv", UriKind.Relative)

            FReveal1.Position = New TimeSpan(0, 0, 4)

            mytimeline.Source = FReveal1.Source
            mytimeline.Duration = (TimeSpan.FromMilliseconds(5000))
            mc = myTimeLine.CreateClock()
            FReveal1.Clock = mc
            FReveal1.Play()

But I get the following error : "Cannot perform this operation while a clock is assigned to the media player."

Is there another way to do this ?

Thanks

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雨夜星沙 2024-11-12 16:14:59

像这样的东西会起作用吗？

    var StartTime = new TimeSpan(0, 0, 45);
    var EndTime = new TimeSpan(0, 0, 55);

    theMediaElement.Position = StartTime;
    theMediaElement.Play();

    while (theMediaElement.Position != EndTime)
    {
        // chill and let it play
     }

    theMediaElement.Stop();

编辑：我可能应该补充一点，这有点牛仔。

Would something like this work?

    var StartTime = new TimeSpan(0, 0, 45);
    var EndTime = new TimeSpan(0, 0, 55);

    theMediaElement.Position = StartTime;
    theMediaElement.Play();

    while (theMediaElement.Position != EndTime)
    {
        // chill and let it play
     }

    theMediaElement.Stop();

EDIT: I should probably add that this is a bit cowboy.

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