Import-module 'ActiveDirectory'
 $getadusers = @()
 $filter = @()
 $samaccountnamelijst = @()
 $Header = 'Samaccountname'
 $CSV = '.\Gemeentenet.csv'
 $Extension = $null
 $import = @()
 Add-Content -Value $Header -Path $CSV
 $getadusers = Get-aduser -filter *
 foreach ($entry in $getadusers){if ($entry -ne $null){$samaccountnamelijst += $entry.samaccountname}}
 foreach ($sam in $samaccountnamelijst){Add-Content -Value $sam -Path $CSV}
 $Deelnemerlijst = @()
 $allusers = import-csv $csv
 foreach ($Deelnemeruser in $allusers){if ($Deelnemeruser -match $deelnemer){$Deelnemerlijst += $Deelnemeruser}}
 $Deelnemerlijst | export-csv .\$Deelnemer.csv

$entry = $null
$username = 'othext'
 $CSV = '.\Gemeentenet.csv'
 $import = @()
 $filter = @()
 $import = import-csv $csv
 foreach ($entry in $import){if ($entry -match $username){$filter += $entry.samaccountname}}
 $filter = $filter -split "@{samaccountname=" |sort
 $filter = $filter -split "$username" | sort
 $filter = $filter -split "}" | Sort -Descending
 $nummer = [int]$filter[0]
 $nummer++

Add-content -Value $volledigesamaccountname -path $csv