Validate CSV File headers

Below example will provide quick snippets to provide validation on the CSV headers to make sure expected header within selected CSV file is provided.If expected CSV header is not found, script will stop.

First function is to select CSV file and import it

1)_.Run Function to get CSV file -GUI lets administrators locate the CSV file

Function Import-CSVfile($inDir) {   [System.Reflection.Assembly]::LoadWithPartialName('System.windows.forms') | Out-Null $OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog $OpenFileDialog.initialDirectory = $inDir $OpenFileDialog.filter = 'All files (*.*)| *.*' $OpenFileDialog.ShowDialog() | Out-Null $OpenFileDialog.filename $inDir = 'C:\Temp\Migration_CSV_Files\' }

#(2)_.Import CSV file

$csvfile     = Import-CSVfile -initialDirectory $inDir $UsersArray  = Import-Csv -path $csvfile -ErrorAction Stop

#(3)_.Validate CSV Header value, expected header from CSV file is, in this example $header = 'sAMAccountName'

$varInf = 'sAMAccountName'   if (!($header -like  $varInf) ){     Write-Host 'Header DOES NOT have correct value' -ForegroundColor Red   Write-Host 'Script will STOP'   Start-Sleep -Seconds 5   break; }

#(4)_.Same task, Validate CSV header stop script if expected header is not found

$header = $UsersArray[0].psobject.Properties.Name $varInf = 'sAMAccountName' if ($header -like  $varInf ){ Write-Host 'Header has correct value' -ForegroundColor Green }else{   Write-Host 'Header DOES NOT have correct value' -ForegroundColor Red }

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