Multi-Threading in PowerShell

Get-Job
Receive-Job
Remove-Job
Resume-Job
Start-Job
Stop-Job
Suspend-Job
Wait-Job

• create a new the function
• create the job (pass arguments) and keep the ID as reference
• get job status
• receive the data

$templist=$null
$scriptblock={
  param($subscriptionName,$proxycreds)
  [System.Net.WebRequest]::DefaultWebProxy.Credentials = $proxycreds 
  #select-azuresubscription -SubscriptionName $subscriptionName
  (Get-AzureService).servicename | foreach {Get-AzureVM -ServiceName $_ }
}
$id = Start-Job –Name getAllVMOptions –Scriptblock $scriptblock -ArgumentList @($subscriptionName, $global:proxycreds) | select id
while((Get-Job -id $id.id).State -ne "completed" )
{
  $time++
  if($time -ge 100)
    {$time=0}
  #write-host "running"
  Write-Progress -activity "Waiting..." -status "Time: $time"  -PercentComplete ($time)
  Start-Sleep 1 
}
$templist = Receive-Job -Id $id.id