How to prevent PowerShell script from immediate close when the timer event is run?

Question

I'm trying to write a PowerShell script for my own use to run it at Windows start up, so it volume up gradually. It works well when I copy the script and paste it in the PowerShell window and click enter, but it does not work when I save the script content in the .ps1 file and Run it with PowerShell from the context menu. It is immediately closed and doesn't wait until the condition from interval is done.

$timer = New-Object Timers.Timer

$iter = 0;

$action = {
  $iter += 1;
  Write-Host "Interval: $iter";
  if ($iter -eq 10) {
    Unregister-Event thetimer;
    pause;
  }
} 
$timer.Interval = 1000  #3 seconds

Register-ObjectEvent -InputObject $timer -EventName elapsed –SourceIdentifier thetimer -Action $action

$timer.Start()

I simplified the script. What command and where should I use, to hang the script till the interval event is finished?

Ansgar Wiechers · Accepted Answer · 2018-04-01 13:47:30Z

1

The pause command inside the timer scriptblock doesn't affect the parent process from which you're starting the timer.

To keep the parent window open until the timer finishes you could add a loop checking the job status:

...
$timer.Start()

do {
    Start-Sleep -Milliseconds 100
    $job = Get-Job -Name 'thetimer'
} while ($job.State -in 'NotStarted', 'Running')

answered Apr 1, 2018 at 13:47

Ansgar Wiechers

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1 Comment

iRon Over a year ago

To keep the parent window open, I would just use Wait-Event.

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