Powershell ISE 5.1 - WindowsMediaPlayer 类 - 事件未触发

Question

有谁知道如何触发 WindowsMediaPlayer 类的 MediaEnded 事件？该事件已注册，但未触发。这不是操作的问题，因为我尝试使用 Out-file 输出结果。我可以使用 Register-ObjectEvent 命令从 Start-Job 触发事件，但由于某种原因，MediaPlayer 不想触发事件。

cls
Unregister-Event *
Add-Type -AssemblyName PresentationCore 
$Player = [System.Windows.Media.MediaPlayer]::new()
$path = "D:\MineSweeper\Sound\Sounds\Bomb.wav"
$file = (Get-Item $path)
$Player.Open($file.FullName)
$player.Play()
$null = Register-ObjectEvent -InputObject $Player -EventName MediaEnded -Action {write-host "$(Get-Date)"}
Get-EventSubscriber

Answer 1

这不是真正的 PowerShell 代码或特定问题，如下所述：

C# MediaPlayer.MediaEnded event not firing.

但是在这里...

我正在尝试使用“MediaEnded”事件句柄来解决 声音文件已结束，然后转到下一个声音文件。

powershell 'system.windows.media.mediaplayer' Register-ObjectEvent

... 是一种解决方法。

Add-Type -AssemblyName PresentationCore 
$_MediaPlayer = New-Object System.Windows.Media.MediaPlayer 
$_MusicFolder = 'C:\Users\Making JESUS Proud\Music'
$_MusicFiles = Get-ChildItem -path $_MusicFolder -include *.mp3 -recurse
$duration = $null
foreach($_file in $_MusicFiles){ 
     "Playing $($_file.BaseName)"
     [uri]$_song = $_file.FullName
     do {
        $_MediaPlayer.Open($_song)
        $_songDuration = $_MediaPlayer.NaturalDuration.TimeSpan.TotalMilliseconds
     }
     until ($_songDuration)
     $_MediaPlayer.Volume = 1
     $_MediaPlayer.Play()
     Start-Sleep -Milliseconds $_songDuration
     $_MediaPlayer.Stop()
     $_MediaPlayer.Close()
}