在PowerShell中，我试图启动一个进程，并等待直到该进程退出，或者脚本从命名管道中获得信号。尽管命名管道组件可以正常工作，但是当脚本被阻止时，代码无法处理事件。这只是事件相关代码的示例：

$ErroractionPreference = "Stop"

# launch process with the appropriate args. 
$p = [System.Diagnostics.Process]::new() 
$p.StartInfo.FileName = "notepad.exe" 
$p.StartInfo.Arguments = $null 
$p.EnableRaisingEvents = $true $p.Start()

# create a task completion source
$tcs = [System.Threading.Tasks.TaskCompletionSource[Boolean]]::new()

Register-ObjectEvent -InputObject $p -EventName Exited `
    -MessageData $tcs `
    -action {
        $Event.MessageData.SetResult($true)
    } 

# wait for the program to exit 
$processTask = $tcs.Task

# this deadlocks 
$processTask.Wait()

是否存在通过PowerShell的作业系统解决该问题的正确方法，还是通过手动启动另一个等待该过程退出的C＃任务来解决该问题，从而使脚本能够在发生任何一个事件后恢复运行？

作为参考，这是更完整的脚本（包括对流程事件或命名管道的等待）：

$ErroractionPreference = "Stop"

#inbound pipe
$pipelistener = [System.IO.Pipes.NamedPipeServerStream]::new("testPipe",1) 

# launch process with the appropriate args.
$p = [System.Diagnostics.Process]::new()
$p.StartInfo.FileName = "notepad.exe"
$p.StartInfo.Arguments = $null
$p.EnableRaisingEvents = $true
$p.Start()

# I would normally solve this using a TaskCompletionSource
# in C#,and have it fire off the process's exited event.

# create a task completion source
$tcs = [System.Threading.Tasks.TaskCompletionSource[Boolean]]::new()

Register-ObjectEvent -InputObject $p -EventName Exited `
    -MessageData $tcs `
    -action {
        $Event.MessageData.SetResult($true)
    } 

# wait for the program to exit,or for pipe signal
try {
    $pipetask = $pipelistener.WaitForConnectionAsync()
    $processTask = $tcs.Task

    while ($true)
    {
        echo "Launched Process,waiting for sequence to complete..."

        # this works,but not instantly - the timeout appears to allow the 
        # event to process.
        #$res = [System.Threading.Tasks.Task]::WaitAny(@($processTask,$pipetask),10000)

        # this does not.
        $res = [System.Threading.Tasks.Task]::WaitAny(@($processTask,$pipetask))


        echo "Got wait result: $res"

        if ($pipetask.IsCompleted) {
            echo "Got pipe connection"
            $sr = [System.IO.StreamReader]::new($pipelistener)
            $msg = $sr.ReadToEnd()

            echo "Pipe sent: $msg"
            break
        }

        if ($processTask.IsCompleted) {
            echo "Process completed."
            break
        }
    }
}
finally {
    $pipelistener.Dispose()
}