PowerShell FileSystemWatcher 状态 NotStarted

Question

我遇到了与这个问题完全相同的问题 FileSystemWatcher state Not started不幸的是，似乎没有人知道这个问题的答案，这就是为什么我用基本相同的问题来试试运气 :)。

这是我的代码:

# Source Pfad festlegen
$Sourcepath = "C:\install" 

# Watcher objekt erstellen
$watcher = [System.IO.FileSystemWatcher]::new()
$watcher.IncludeSubdirectories = $true
$watcher.Path = $Sourcepath
$watcher.EnableRaisingEvents = $true

# Aktionen festlegen
$action = {
    $event | fl *
    $event.sourceeventargs | fl *
}

$erstellt = Register-ObjectEvent $watcher Created -Action $action -SourceIdentifier File

但事件从未开始 State : NotStarted 正如您在此处看到的:

PS C:\WINDOWS\system32> $erstellt | fl *


State         : NotStarted
Module        : __DynamicModule_dcdf5dd5-0032-42ad-902f-06e15f5cf3fa
StatusMessage :
HasMoreData   : False
Location      :
Command       :
                    $event | fl *
                    $event.sourceeventargs | fl *

JobStateInfo  : NotStarted
Finished      : System.Threading.ManualResetEvent
InstanceId    : 87072caa-32dc-45c9-b10b-7aa4f455a3aa
Id            : 1
Name          : File
ChildJobs     : {}
PSBeginTime   :
PSEndTime     :
PSJobTypeName :
Output        : {}
Error         : {}
Progress      : {}
Verbose       : {}
Debug         : {}
Warning       : {}
Information   : {}

我在 PowerShell.exe 中以管理员身份在 PowerShell.exe 和 PowerShell_ISE 中尝试过，但我的事件作业从未启动。为什么？我该如何启动它？

编辑: 正如答案所暗示的那样，开始不是问题。我认为这是一个问题，因为我从未收到任何输出。看起来输出被丢弃了，除了它是通过 Write-Host

完成的

Answer 1

看起来您看不到操作的结果，因为触发事件操作的输出被简单地丢弃。我只是改变了 Action ，它对我有用。不要忘记在目录中创建一个文件以触发事件。

# Source Pfad festlegen
$Sourcepath = "C:\install" 

# Watcher objekt erstellen
$watcher = [System.IO.FileSystemWatcher]::new()
$watcher.IncludeSubdirectories = $true
$watcher.Path = $Sourcepath
$watcher.EnableRaisingEvents = $true

# Aktionen festlegen
$action = {
$name = $Event.SourceEventArgs.Name 
$changeType = $Event.SourceEventArgs.ChangeType 
$timeStamp = $Event.TimeGenerated 
Write-Host "The file '$name' was $changeType at $timeStamp" -ForegroundColor red 
}

$erstellt = Register-ObjectEvent $watcher Created -Action $action -SourceIdentifier "File"

我有:

Get-EventSubscriber 


SubscriptionId   : 4
SourceObject     : System.IO.FileSystemWatcher
EventName        : Created
SourceIdentifier : File
Action           : System.Management.Automation.PSEventJob
HandlerDelegate  : 
SupportEvent     : False
ForwardEvent     : False

和:

$erstellt |fl *


State         : Running
Module        : __DynamicModule_91fdc1aa-45b4-4c37-8c35-167cc41f5fa0
StatusMessage : 
HasMoreData   : True
Location      : 
Command       : 
                $name = $Event.SourceEventArgs.Name 
                $changeType = $Event.SourceEventArgs.ChangeType 
                $timeStamp = $Event.TimeGenerated 
                Write-Host "The file '$name' was $changeType at $timeStamp" -fore red 

JobStateInfo  : Running
Finished      : System.Threading.ManualResetEvent
InstanceId    : 15acf6ef-c89d-4ebb-8be3-2000ea5cfa43
Id            : 3
Name          : File
ChildJobs     : {}
PSBeginTime   : 13/02/2018 15:52:39
PSEndTime     : 
PSJobTypeName : 
Output        : {}
Error         : {}
Progress      : {}
Verbose       : {}
Debug         : {}
Warning       : {}
Information   : {}