axwindowsmediaplayer - 媒体播放器例外

Question

我正在编写一个 Windows 应用程序。我的表单中有媒体播放器。当我将 URL 设置为类似“fsgfbnhgb”（有问题！）时，播放器本身会显示错误。但这并不好。我有“try”和“catch”块，并且当 URL 为“fgdsfgasgfas”时，在 try 块中没有任何异常！因为玩家自己会捕捉到异常。如何自己为媒体播放器设置错误？

try
{
  player.URL = "fdgsdgsdg";
  player.Ctlcontrols.play();
}
catch
{
  snd.Play();
  MessageBox.Show("An error occurred during reading the alarm music path. Check that its directory is valid.", "Alarm music error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}

谢谢你们

Answer 1

您可以先在 try{} catch{} 中尝试检查文件是否存在

try{
    string url = "sdahgjk";
   if (!File.Exists(url))
        throw new Exception("Exception Message Here");
   player.Url = url;
   player.Ctlcontrols.play();
        }
        catch
        {
            snd.Play();
            MessageBox.Show("An error occurred during reading the alarm music path. Check that its directory is valid.", "Alarm music error", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }