dynamically creating key/value of an object and exporting to CSV - powershell

Question

After getting a search result from an LDAP Server, i need to create a pscustomobject dynamically.
The Problem here is that some of the attributes are not set for all users.
this is why i cannot create the pscustomobject the traditional way.
Name = $($item.Attributes['givenname'].GetValues('string'))
Surname = $($item.Attributes['sn'].GetValues('string'))
The Attribute Name does not exist for all users and doing this throws an error.
How can i create the pscustomobject in this case where i need to add both key and value dynamically.
Here is what i have so far:
$vals="cn","tel","email","sn","givenname","ou"
$c.Bind()
$r = New-Object System.DirectoryServices.Protocols.SearchRequest -ArgumentList $baseDN,$Filter,$scope,$attrlist
$re = $c.SendRequest($r)
foreach ($item in $re.Entries) {
foreach($attr in $vals){
if($item.Attributes.Keys -contains $attr){
$pskeys += $attr
}}
foreach($pskey in $pskeys){
$data += [pscustomobject]#{
$($pskey) = $($item.Attributes[$pskey].GetValues('string'))
}}
$pskeys = #()
}
givenname does not exist for all the users and this is why the pscustombject must be created dynamically.
I cannot use a HashTable or some kind of a List as duplicate values must be allowed. There are cases where the attributes sn and givenname are equal.
After hours of trying and failing i can only hope for the Wizards of Stackoverflow to show me how this can be achieved.
I need a pscustomobject where i can save the available attributes and skip the missing attributes dynamically. Is there a way to do this?
Regards

Answer 1

Try following :
$table = [System.Collections.ArrayList]::new()
foreach ($item in $re.Entries) {
$newRow = New-Object -TypeName psobject
foreach($attr in $vals){
if($item.Attributes.Keys -contains $attr){
$pskeys += $attr
}}
foreach($pskey in $pskeys){
foreach($item in $item[$pskey].Attributes.GetValues('string'))
{
$newRow | Add-Member -NotePropertyName $item.Name -NotePropertyValue $item.Value
}
}
$table.Add($newRow) | Out-Null
}
$table | Format-Table

Answer 2

Finally!
I have gotten it to work!
The Trick was to enclose $pskey and $item.Attributes[$pskey].GetValues('string') in $()
Without $() Add-Member was adding the properties as Arrays and not as Strings.
Here is the working Code:
$table = New-Object System.Collections.ArrayList
$c.Bind()
$r = New-Object System.DirectoryServices.Protocols.SearchRequest -ArgumentList $baseDN,$Filter,$scope,$attrlist
$re = $c.SendRequest($r)
foreach ($item in $re.Entries) {
$newRow = New-Object -TypeName psobject
foreach($attr in $vals){
if($item.Attributes.Keys -contains $attr){
$pskeys += $attr
}}
foreach($pskey in $pskeys){
$newRow | Add-Member -NotePropertyName $($pskey) -NotePropertyValue $($item.Attributes[$pskey].GetValues('string'))
}
$table.Add($newRow) | Out-Null
$pskeys = #()
}
$table | Export-Csv -Path $ExportPath -NoTypeInformation -Encoding UTF8 -Append -Delimiter ";"
Thank You jdweng for pointing me in the right direction.
$table | Format-Table on the console and the resulting CSV after the Export look flawless now.
My Problem is solved.