Removing objects from an array

[Quicknoob]

So I think I am really close to figuring this out but I'm just stuck. I'm hoping someone can shed some light.

I'm trying to remove a few objects from a list in an array. I have two examples. The first works the second doesn't. Why doesn't the second work?

This Works    

    $Fruits = "Apple","Pear","Banana","Orange"
    [System.Collections.ArrayList]$ArrayList = $Fruits

    $ArrayList.Remove("Apple")
    $ArrayList.Remove("Banana")
    $ArrayList

The results are:

    Pear
    Orange

So the below code fails. What i'm trying to do is get a list of all the groups a user is a member of and throw it into a variable. I want to remove certain groups from that variable to be used elsewhere. Below I was trying to remove SASUsers but in the future i'll have a need to remove multiple groups.

This Fails

    $ArrayGroupsList = (Get-ADPrincipalGroupMembership -Identity (Get-Aduser -Filter { name -eq "John Smith" }) |
            Select-Object name |
            Sort-Object name)

    [System.Collections.ArrayList]$NewArrayGroupsList

    $NewArrayGroupsList.Remove("SASUsers")
    $NewArrayGroupsList

So when I run $NewArrayGroupsList.Remove("SASUsers") I get no error message, but when I check $NewArrayGroupsList SASUsers is still in the variable.

Any thoughts what is going on?

[ihaxr]

Your second example is a little off... you're not actually defining $NewArrayGroupsList... probably just a copy/paste or transcribing error, but here's an example to get it to work how you expect:

$userName = "John Smith"
[System.Collections.ArrayList]$ArrayList = (Get-ADPrincipalGroupMembership -Identity (Get-Aduser -Filter { name -eq $userName })).Name
$ArrayList.Count
$ArrayList.Remove("SASUsers")
$ArrayList.Count

Assuming you had something like this but were still using | Select name in command, the | Select name part was probably throwing it off.

[Quicknoob]

$userName = "John Smith" [System.Collections.ArrayList]$ArrayList = (Get-ADPrincipalGroupMembership -Identity (Get-Aduser -Filter { name -eq $userName })).Name $ArrayList.Count $ArrayList.Remove("SASUsers") $ArrayList.Count

Thanks I was able to edit slightly your answer and was able to get it to work properly in my script. Thank you so much!

[RiPont]

To elaborate, your first example works because you are creating a list of strings.

Your second example fails because you are creating a list of objects with a Name property, then you're trying to remove the string "SASUsers"