Filesystemwatcher在使用PowerShell时不起作用

Question

$folder="C:\filewatcher"
$filter="*.*"
$watcher=[System.IO.FileSystemWatcher]::new($folder,$filter)
$watcher.EnableRaisingEvents=$true

Register-ObjectEvent $watcher created -SourceIdentifier test -Action {
$path=$event.sourceeventargs.fullpath
$Name=(Get-ChildItem $path -filter "*.inf").Name
$Name}

嗨，我在触发事件的direcory上放置了$folder

为什么get-childitem不起作用？

$ Name返回空

为什么不能将源$event用作变量路径？