Job to check job state - powershell

Question

I'm trying to check what it's the state of the previously started jobs without blocking the session I am in.
So I tried something like this:
Start-Job -ScriptBlock {
while($true){
$i++
Start-Sleep -Seconds 1
}
}
Start-Job -ScriptBlock {
switch ((Get-Job)[0].State){
"Stopped" {
write-host "Stopped"
}
"Running"{
write-host "Running"
}
default {
write-host "Something else"
}
}
}
Get-Job | Receive-Job
But it throws an error saying that I can not index into a null array, even when I have several jobs running.
Is there a way for starting a job that allow me to check the other jobs state?

Answer 1

Since jobs "live" in different "spaces" (poor technicality, sorry for that), they can't see each other. So, the solution that I found is to run a ScriptBlock whenever a timer throws an event. This way, the other jobs continue undisturbed.
Start-Job -ScriptBlock {
while($true){
$i++
Start-Sleep -Seconds 1
}
}
$timer = New-Object System.Timers.Timer
$timer.AutoReset = $true #repeat?
$timer.Interval = 500 #ms
Register-ObjectEvent -InputObject $timer -EventName Elapsed -Action {
$job_state = (Get-Job)[0].State
switch ($job_state){
"Stopped" {
write-host "Stopped"
}
"Running"{
write-host "Running"
}
default {
write-host "Something else"
}
}
}
$timer.Start()
This way if the first job is in a state that isn't supposed to be, i can be notified.