Question:
I´m searching for the best way to handling exceptions in PowerShell.
In the following example I want to create a new SharePoint web and remove a old SharePoint web. When the New-SPWeb fails, it is necessary that the script ends.
I think try/catch is the best way, because the “if” statement only checks if $a exists.
Are there still other options to handling exceptions?
Exception handling with “if” statement:
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$a = New-SPWeb http://newspweb if($a -eq $null) { Write-Error "Error!" Exit } Write-Host "No Error!" Remove-SPWeb http://oldspweb |
With try/catch:
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try { $a = New-SPWeb http://newspweb } catch { Write-Error "Error!" Exit } Write-Host "No Error!" Remove-SPWeb http://oldspweb |
Answer:
Try/catch is really for handling terminating errors and continuing on. It sounds like you want to stop on a non-terminating error. If that’s the case, use the ErrorAction parameter on New-SPWeb and set it to Stop e.g.:
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$a = New-SPWeb http://newspweb -ErrorAction Stop |
This will convert the non-terminating error into a terminating error.