Powershell, help with incrementing inside foreach and scriptblock

jesper

Hi,

I hope someone can spot the error:

This is a small function inside a bigger script.

I want it to increment $i everytime it iterate the foreach, but i cant get it to work. If i run only the line where $i++ is present, it will increment.

The message arriving to the users, so it works fine, its just ignoring the $i++

$i = 0

function Message {

start-job -Name Col01 -InitializationScript{Import-Module RemoteDesktop} -ScriptBlock{$Users = Get-RDUserSession -ConnectionBroker $ActiveConnectionBroker -CollectionName "col01"

foreach ($User in $Users) {

Send-RDUserMessage -UnifiedSessionID $User.UnifiedSessionId -HostServer $User.HostServer -MessageTitle "Info" -MessageBody $using:message

$i++

}

8 Replies

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Varun Setia5y ago
You should initialise it inside function, why are you declaring it outside function
jesper5y ago
Hi,

No, even if i try using $global:i++ it just dont want to increment it. if i mark $global:i++ and using f8 it vil increment. but not when im calling the function.
Varun Setia5y ago
Hi, is your issue resolved?
Varun Setia5y ago
$i is inside script block, i guess it is isolated from rest of script so $i should be inside script block

Try this:
function Message {
start-job -Name Col01 -InitializationScript{Import-Module RemoteDesktop} -ScriptBlock{$Users = Get-RDUserSession -ConnectionBroker $ActiveConnectionBroker -CollectionName "col01"
$i = 0
foreach ($User in $Users) {
Send-RDUserMessage -UnifiedSessionID $User.UnifiedSessionId -HostServer $User.HostServer -MessageTitle "Info" -MessageBody $using:message
$i++
}
}
}
Normally this works:
$i = 0
function Message{
    $i = $i+5
    $i++
    Write-Host  $i
}

Message
Output is: 6
jesper5y ago
I initialize the function and just run "message"
Varun Setia5y ago
Hi, how are you calling this function
jesper5y ago
i already tried global, i also try calling the function with a reference. i do not have any other clue :/
Varun Setia5y ago
Try modifying the scope of variable. I think global scope will help.Try $global:i inside function. You can refer to this https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_scopes?view=powershell-7#short-description