Get AD Group Members Recursively V2

I am releasing version 2 of the AD group members recursive function after requests from some of my followers and colleagues.

This version has added functionality to show groups if you use parameter -ShowGroups $true (its optional parameter).

If you are using this in your existing scripts those will continue to work as functionality has been added via optional parameter.

Function has been updated in newer version of vsadmin module.

##################Function Code##############################

Function Get-ADGroupMembersRecursive{
  Param(
    [Parameter(Mandatory = $true,ValueFromPipeline=$true)]
    [ValidateNotNullOrEmpty()]
    [String[]]$Groups,
    [ValidateNotNullOrEmpty()]
    [String[]]$Properties,
    [ValidateSet($true,$false)]
    [string]$ShowGroups
  )
    Begin{
        $Results = @()
        [String[]]$defaultproperties = "distinguishedName","name","objectClass","objectGUID","SamAccountName","SID"
        $Properties+=$defaultproperties
        $Properties = $Properties | Sort-Object -Unique
    }
    Process{
        ForEach($adobj in $Groups){
            $getgroupdn =  (Get-ADGroup -identity $adobj).DistinguishedName
            $findallgroups = Get-ADGroup -identity $getgroupdn -Properties members| Select-Object -ExpandProperty members | get-adobject | Where-Object{$_.objectClass -eq "Group"} |Select DistinguishedName
            $Results+=$getgroupdn
            ForEach($Object in $findallgroups){
                if($ShowGroups -eq $true){
                  Get-ADGroupMembersRecursive $Object.DistinguishedName -Properties $Properties -ShowGroups $true
                 }
                 else{
                  Get-ADGroupMembersRecursive $Object.DistinguishedName -Properties $Properties
                 }
            }
        }
    }
    End{
        $Results = $Results | Select-Object -Unique
        foreach($item in $Results){
          $arrgroupmembers =@()
          if($ShowGroups -eq $true){
            Get-ADGroup -id $item -Properties $Properties | Select-Object $Properties
          }
          $arrgroupmembers = Get-ADGroup -id $item -Properties members | Select-Object -ExpandProperty members |get-adobject | Where-Object{$_.objectClass -eq "user"} | Get-ADUser -properties $Properties | Select-Object $Properties
          $arrgroupmembers
        }
    }
} #Get-ADGroupMembersRecursive

##################################################################

Let us revisit Function usage:

Get-ADGroupMembersRecursive -Groups “Test Nested Group” # It will recurse thru it and extract the members