Powershell Import-Csv then Get-Aduser results in all users in ad being displayed when a Blank Line appears - powershell

Question

I am writing a powershell script to disable users due to the fact that we get a list of them everyday and it is monotonous. I paste the list from the ticket into a csv formatted as Lastname, Firstname then run my script with imports the list, serches ad and ask if you want to disable if it finds them. Here is the code...
# Set variables
$Import = "C:\Scripts\Support Files\Users_To_Disable.csv"
$Export = "C:\Scripts\Support Files\Disabled_Users_Output.txt"
# Import user list
$Users = Import-CSV $Import
foreach ($User in $Users)
{
# Set user variables
$LastName = $User.("Surname")
$FirstName = $User.("GivenName")
# Use user variables from list to search ad
$UserName = (Get-ADUser -Filter "GivenName -like '$FirstName*' -and Surname -like '$LastName*'").SamAccountName
# What to do if it finds nothing
If ($UserName -eq $Null)
{
Write-Host $LastName, $FirstName NA -ForegroundColor Yellow
Write-Output "$LastName, $FirstName NA" | Out-File $Export -Append
}
# What to do if it finds a user
Else
{
# Ask for user input
Write-Host $LastName, $FirstName Found -ForegroundColor Green
Write-Host UserName = $UserName -ForegroundColor Green
DO {
$Disable = Read-Host "Do you want to disable user? (Y/N)"
If($Disable -eq "Y")
{
# Disable the user
Disable-ADAccount -Identity $UserName
# Move the user
Get-ADUser $UserName | Move-ADObject -TargetPath "OU=Disabled - Retention,DC=intranet,DC=sw"
# Add Disabled Users group
Add-ADGroupMember "Disabled Users" -Members "$UserName"
# Set Disable Users as primary group
$Group = Get-ADGroup "Disabled Users" -Properties #("PrimaryGroupToken")
Get-ADUser "$UserName" | Set-ADUser -Replace #{PrimaryGroupID=$Group.PrimaryGroupToken}
# Remove all other groups
$User = Get-ADUser "$UserName" -Properties MemberOf
$Groups = $User.MemberOf |ForEach-Object { Get-ADGroup $_ }
$Groups | ForEach-Object { Remove-ADGroupMember -Identity $_ -Members $User -Confirm:$false }
# Output
Write-Host $LastName, $FirstName Disabled -ForegroundColor Red
Write-Output "$LastName, $FirstName Disabled" | Out-File $Export -Append
Break
}
}
Until ($Disable -eq "N")
}
}
Invoke-Item $Export
All of that works, what is scary is that if there are blank cells above a user then it returns all of the users in ad and asks if you want to disable all of them. In other words if the csv looks like this...
Surname GivenName
User Test
Everything works fine, but if it looks like this...
Surname GivenName
User Test
Pandemonium, well not really but it does ask if you want to initiate a resume generating event, which I don't so how can I build in some safety that would stop it from returning all of ad when there are blanks in the csv before users?

Answer 1

You can eliminate the blank lines by filtering out Null values on your import, which should resolve the problem.
$Users = Import-CSV $Import | Where-Object {$_.Surname}