Windows Media Player出现问题 [英] Problem with Windows Media Player

问题描述

你好，我想启动我的媒体播放器，但是我收到错误



错误1类型'WMPLib.WMPPlayState'在未引用的程序集中定义。您必须添加对程序集'WMPLib，Version = 1.0.0.0，Culture = neutral，PublicKeyToken = null'的引用。 H：\ UCILISNO ZVONO \ WindowsFormsApplication1 \Form1.cs 319 13 WindowsFormsApplication1



错误3'WMPLib.IWMPControls'不包含'play'的定义没有扩展方法'play'接受类型'WMPLib.IWMPControls'的第一个参数可以找到（你是否缺少using指令或程序集引用？）H：\ UCILISNO ZVONO \ WindowsFormsApplication1 \Form1.cs 330 51 WindowsFormsApplication1

Hello, i want to start my media player but i get error

Error 1 The type 'WMPLib.WMPPlayState' is defined in an assembly that is not referenced. You must add a reference to assembly 'WMPLib, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. H:\UCILISNO ZVONO\WindowsFormsApplication1\Form1.cs 319 13 WindowsFormsApplication1

Error 3 'WMPLib.IWMPControls' does not contain a definition for 'play' and no extension method 'play' accepting a first argument of type 'WMPLib.IWMPControls' could be found (are you missing a using directive or an assembly reference?) H:\UCILISNO ZVONO\WindowsFormsApplication1\Form1.cs 330 51 WindowsFormsApplication1

private void axWindowsMediaPlayer1_PlayStateChange(object sender, AxWMPLib._WMPOCXEvents_PlayStateChangeEvent e)
{
    axWindowsMediaPlayer2.URL = @"";
    //zavrsila pesnata
    if (axWindowsMediaPlayer2.playState.ToString() != "MediaEnded")
    {
        winmediaplayerstart();
    }
}
private void winmediaplayerstart()
{
    var url = axWindowsMediaPlayer2.URL;
    if (url != "")
    {
        axWindowsMediaPlayer2.URL = @"C:\ZVONO\pesni\OneRepublic - Counting Stars.mp4";
        axWindowsMediaPlayer2.Ctlcontrols.play();
    }
    else
    {
        DirectoryInfo d = new DirectoryInfo(@"" + folderpesni);
        FileInfo[] Files = d.GetFiles("*.mp4");
        foreach (FileInfo file in Files)
        {
            MessageBox.Show(file.Name);
        }
    }

}
private void winmediaplayerstop()
{
    axWindowsMediaPlayer2.Ctlcontrols.pause();
}

推荐答案

我会做一些建议的更改，因为代码中的一些内容是不对：

if（axWindowsMediaPlayer2.playState.ToString（）！=MediaEnded）



为什么要尝试将playstate属性转换为字符串？如果您想知道播放状态是什么，则应使用为该事件提供的正确方法。像这样：



PlayStateChangeEvent

Hi, I will make some suggested changes as a couple of things in your code are not right:
if (axWindowsMediaPlayer2.playState.ToString() != "MediaEnded")

Why are you trying to convert the playstate property to a string? If you want to know what the play state is, you should use the correct methods provided for that event. Like so:

PlayStateChangeEvent

if (axWindowsMediaPlayer2.playState == WMPLib.WMPPlayState.wmppsStopped)<br />
            {<br />
                winmediaplayerstart();<br />
            }

我也不知道看看'folderpesni'的定义，所以期待该行的异常。为什么你将.URL属性用于非相关的url文件？



关于你在上面尝试使用的播放状态和其他方法;都不正确。



关于错误3的引用问题，我只能断定你的代码已经损坏了;也许在您的designer.cs文件中。尝试清理您的解决方案并再次构建它。 （如果这不起作用，请删除该组件并通过将其拖到表单中重新添加它。）您可能还必须替换它可能在代码中删除的处理程序。



我还强烈建议您在继续之前阅读有关此组件的文档。 文档。



如果您有任何疑问，请告诉我。

I also don't see where ' folderpesni ' Is defined, so expect an exception on that line. And why are you using the .URL property for a non related url file?

Regarding your playstate and other methods you are trying to use above; are all incorrect.

About the referencing issue on Error 3, I can only conclude you have corrupted your code somewhere; perhaps in your designer.cs file. Try to clean your solution and build it again. (If that does not work, remove the component and re-add it by dragging it to your form.) You may also have to replace the handlers which it may remove in code too.

I would also strongly recommend you to read the documentation on this component before going any further. Documentation.

If you have any questions, please let me know.

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