$watcher = [System.IO.FileSystemWatcher]::new("C:\Users\swills\Desktop\test")
$watcher.IncludeSubdirectories = $true
Register-ObjectEvent $watcher Created -Action { Write-Host "$($Event.SourceEventArgs.ChangeType) $($Event.SourceEventArgs.Name)" }
Register-ObjectEvent $watcher Renamed -Action { Write-Host "$($Event.SourceEventArgs.ChangeType) $($Event.SourceEventArgs.Name)" }
Register-ObjectEvent $watcher Changed -Action { Write-Host "$($Event.SourceEventArgs.ChangeType) $($Event.SourceEventArgs.Name)" }
Register-ObjectEvent $watcher Deleted -Action { Write-Host "$($Event.SourceEventArgs.ChangeType) $($Event.SourceEventArgs.Name)" }

try {
    while($true) { Start-Sleep -Milliseconds 100 }
}
finally {
    $watcher.Dispose()
}