Getting AD info using Get-ADGroupMember not working as expected - powershell

Question

So i am trying to write a script that basically gets a list of AD groups, and then with each group, gets the members and memberof.
So far i have this :
Import-Module ActiveDirectory
$groupList = get-adgroup -filter *| select-object Name | sort-object -property name
Which works fine. nice and simple. No problem. When i run write-output $groupList, it spits out the list of my AD groups. Happy days!
Then I add this :
foreach($group in $groupList){
Get-ADGroupMember -Identity $group
So my code block looks like this :
Import-Module ActiveDirectory
$groupList = get-adgroup -filter *| select-object Name | sort-object -property name
foreach($group in $groupList){
Get-ADGroupMember -Identity $group
}
And get this error :
Get-ADGroupMember : Cannot bind parameter 'Identity'. Cannot create object of type
"Microsoft.ActiveDirectory.Management.ADGroup". The adapter cannot set the value of property "Name".
I have also tried this :
Get-ADGroup -filter * -Properties MemberOf | Where-Object {$_.MemberOf -ne $null} | Select-Object Name,MemberOf
Which works great in Powershell:
Image of working script results
Yet strangley, when i then add the export-csv on the end, that same error returns :
Exported-CSV image
Can someone please educate me, as no doubt its myself being a little stoopid.
Thanks.

Answer 1

$groupList does not directly contain an array of strings / names.
Use the following command to get only the names:
$groupList = Get-ADGroup -Filter * | Sort-Object -Property Name | Select-Object -ExpandProperty Name
MemberOf and Members are arrays. Export-Csv does not know how to export them into a file. Here an example, how to handle this.
Get-ADGroup -Filter * -Properties MemberOf, Members | `
Select-Object -Property Name, #{Name = 'MemberOf'; Expression = {$_.MemberOf -join ';'}}, #{Name = 'Members'; Expression = {$_.Members -join ';'}} | `
Export-Csv -Path 'path' -NoClobber -NoTypeInformation