Powershell - Capture cmd-let error to variable

Question

I'm trying to capture error from command into variable and to exit script if error occures

Add-DistributionGroupMember -Identity [email protected] -Member `
[email protected] -ErrorAction stop -ErrorVariable MyError `
if ($MyError.Count -gt 0) {`
exit

}

But MyError variable is empty and script continues to run,

if however, specify -ErrorAction SilentlyContinue then script simply continues and error variable is empty

You can nest try/catch, so could wrap the call to Add-DistributionGroupMember in its own one that exits if it catches anything. — boxdog
– boxdog, Commented Mar 27, 2020 at 15:33
the try/catch construct is not intended for big chunks of code. [grin] if you have a large chunk of code wrapped in a single try/catch ... you are doing it wrong. the construct is designed for catching errors as they happen ... not for "oh, look, and error happened somewhere" situations. — Lee_Dailey
– Lee_Dailey, Commented Mar 27, 2020 at 15:34

Ivan Glasenberg · Accepted Answer · 2020-03-30 03:10:35Z

1

As already mentioned in the comment, you should use a nested try catch block for the specified cmdlet, like this:

try
{
Add-DistributionGroupMember -Identity [email protected] -Member `
[email protected] -ErrorAction stop -ErrorVariable MyError `
}
catch {
      if($MyError.Count -gt 0)
      {
        Write-Output $myerror

        #if you want to exit execution after this error, use exit command as blow
        exit
      }
      }

answered Mar 30, 2020 at 3:10

Ivan Glasenberg

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