Strange behaviour of System.Object[]

Tommy Holm Jakobsen

Hello.

I've got a strange problem here and I can't figure out whats causing it.

I’ve got this custom object:
$objUser = "" | Select-Object CustomerID, ID, Name, Telephone, Email;

And a set that I’m adding my custom objects to:
$objCustomerUsers = @();

I’ve got this little script:

///// BEGIN

function getCustomerUsers
{
$objCustomerUsers = @();
...
foreach(...) {
$objUser = "" | Select-Object CustomerID, ID, Name, Telephone, Email;
...
$objCustomerUsers = $objCustomerUsers + $objUser;
}

Write-Host $objCustomerUsers.Count;
Write-Host $objCustomerUsers.GetType().FullName;
return $objCustomerUsers;
}

$users = getCustomerUsers;
Write-Host $users.Count;
Write-Host $users.GetType().FullName;

//// END

This is ofcause not the whole script, but you get the idea.

Now take a look at the output:

31 // $objCustomerUsers.Count;
System.Object[]
46 // $users.Count;
System.Object[]


Why do I get $users.Count = 46 ? This should be 31 as it is inside the
function, or am I doing something wrong?

Thanks in advance.
Tommy.

Marco Shaw [MVP]

> Now take a look at the output:
>
> 31 // $objCustomerUsers.Count;
> System.Object[]
> 46 // $users.Count;
> System.Object[]
>
>
> Why do I get $users.Count = 46 ? This should be 31 as it is inside the
> function, or am I doing something wrong?
>
> Thanks in advance.
> Tommy.

You might have something else writing out from the function?

What do these give:
PS > $objCustomerUsers
PS > $users

Marco

--
Microsoft MVP - Windows PowerShell


PowerGadgets MVP


Blog:

Shay Levi

Hi Tommy,


This returns 33 fileinfo objects (on my computer) both inside and outside
the function. I suspect there's something else
in you function/script that causes the problem.


function getCustomerUsers
{
$objCustomerUsers = @()

foreach($file in get-childitem) {
$objUser = "" | Select-Object CustomerID, ID, Name, Telephone, Email
$objCustomerUsers += $objUser
}

Write-Host $objCustomerUsers.Count
Write-Host $objCustomerUsers.GetType().FullName
$objCustomerUsers
}

$users = getCustomerUsers
Write-Host $users.Count
Write-Host $users.GetType().FullName





---
Shay Levi
$cript Fanatic


TJ> Hello.
TJ>
TJ> I've got a strange problem here and I can't figure out whats causing
TJ> it.
TJ>
TJ> I’ve got this custom object:
TJ> $objUser = "" | Select-Object CustomerID, ID, Name, Telephone,
TJ> Email;
TJ> And a set that I’m adding my custom objects to:
TJ> $objCustomerUsers = @();
TJ> I’ve got this little script:
TJ>
TJ> ///// BEGIN
TJ>
TJ> function getCustomerUsers
TJ> {
TJ> $objCustomerUsers = @();
TJ> ...
TJ> foreach(...) {
TJ> $objUser = "" | Select-Object CustomerID, ID, Name, Telephone,
TJ> Email;
TJ> ...
TJ> $objCustomerUsers = $objCustomerUsers + $objUser;
TJ> }
TJ> Write-Host $objCustomerUsers.Count;
TJ> Write-Host $objCustomerUsers.GetType().FullName;
TJ> return $objCustomerUsers;
TJ> }
TJ> $users = getCustomerUsers;
TJ> Write-Host $users.Count;
TJ> Write-Host $users.GetType().FullName;
TJ> //// END
TJ>
TJ> This is ofcause not the whole script, but you get the idea.
TJ>
TJ> Now take a look at the output:
TJ>
TJ> 31 // $objCustomerUsers.Count;
TJ> System.Object[]
TJ> 46 // $users.Count;
TJ> System.Object[]
TJ> Why do I get $users.Count = 46 ? This should be 31 as it is inside
TJ> the function, or am I doing something wrong?
TJ>
TJ> Thanks in advance.
TJ> Tommy.

Tommy Holm Jakobsen

Marco Shaw [MVP] wrote:
>
>> Now take a look at the output:
>>
>> 31 // $objCustomerUsers.Count;
>> System.Object[]
>> 46 // $users.Count;
>> System.Object[]
>>
>>
>> Why do I get $users.Count = 46 ? This should be 31 as it is inside
>> the function, or am I doing something wrong?
>>
>> Thanks in advance.
>> Tommy.
>
> You might have something else writing out from the function?
>
> What do these give:
> PS > $objCustomerUsers
> PS > $users
>
> Marco
>
Hi Marco

This got me more confused.

$objCustomerUsers returns an empty line.
$users returns the following:
0 1 2 3 CN=xx,OU=xx,OU=xx,DC=xx,DC=xx,DC=xx0 1 2 3
CN=xx,OU=xx,OU=xx,DC=xx,DC=xx,DC=xx0 1 2 3
Including lots of empty spaces afterwads. the correct LDAP string has
been replaced with xx.

If you wan't to see the whole source code, please take a look at this
url:

Tommy Holm Jakobsen

Shay Levi skrev:
> Hi Tommy,
>
>
> This returns 33 fileinfo objects (on my computer) both inside and
> outside the function. I suspect there's something else
> in you function/script that causes the problem.
>
>
> function getCustomerUsers
> {
> $objCustomerUsers = @()
>
> foreach($file in get-childitem) {
> $objUser = "" | Select-Object CustomerID, ID, Name, Telephone,
> Email
> $objCustomerUsers += $objUser
> }
> Write-Host $objCustomerUsers.Count
> Write-Host $objCustomerUsers.GetType().FullName
> $objCustomerUsers
> }
>
> $users = getCustomerUsers
> Write-Host $users.Count
> Write-Host $users.GetType().FullName
>
>
>
>
>
> ---
> Shay Levi
> $cript Fanatic
>
>
Hi Shay,

Thanks for your reply.

Seems strange. I might have done something totally wrong in my script then.
I've posted it at

- Tommy

Jarmo Aho

Tommy Holm Jakobsen <> wrote in news:#yiZobg1IHA.2208
@TK2MSFTNGP04.phx.gbl:

> $objCustomerUsers returns an empty line.
> $users returns the following:
> 0 1 2 3 CN=xx,OU=xx,OU=xx,DC=xx,DC=xx,DC=xx0 1 2 3
> CN=xx,OU=xx,OU=xx,DC=xx,DC=xx,DC=xx0 1 2 3
> Including lots of empty spaces afterwads. the correct LDAP string has
> been replaced with xx.
>
> If you wan't to see the whole source code, please take a look at this
> url:

Those numbers you see in $users are return codes from
$objSearcher.PropertiesToLoad.Add(). It returns the index of item you just
added. PowerShell places indexes to pipe and function returns them (in
addition to what you return with return statement).

Use [void] whenever you call Add method:

[void] $objSearcher.PropertiesToLoad.Add("name")