Есть более изящные способы, но вот некрасивый ответ, чтобы проиллюстрировать это ...
$Data = @"
"ProcessName","UserName","PSComputerName"
"AnyDesk","NT-AUTORITÄT\SYSTEM","localhost"
"csrss","","dc-01"
"ctfmon","SAD\Administrator","rdscb-01"
"","SAD\Administrator","srv-01"
"@ | Out-File -FilePath 'D:\Temp\ProcData.csv'
$headers = (
(Get-Content -Path 'D:\Temp\ProcData.csv') -replace '"','' |
select -First 1
) -split ','
$data = Import-Csv -Path 'D:\Temp\ProcData.csv'
$colCnt = $headers.count
$lineNum = 0
:newline
foreach ($line in $data)
{
$lineNum++
for ($i = 0; $i -lt $colCnt; $i++)
{
# test to see if contents of a cell is empty
if (-not $line.$($headers[$i]))
{
Write-Warning -Message "$($lineNum): $($headers[$i]) is blank"
continue newline
}
}
"$($lineNum): OK"
# Perform other actions with good data
}
<#
# Results
1: OK
WARNING: 2: UserName is blank
3: OK
WARNING: 4: ProcessName is blank
#>