Try_Catch_Finally not working?

[Zsoldier]

Not sure why this isn't working so maybe someone can help me understand why? The catch statement doesn't seem to run.

Try {$VM = @(get-vm -id TemplateID)} Catch {$Template = @(get-template -id TemplateID)}

I just get an error that the Get-VM statement could not find a VM w/ the referenced TemplateID. The catch statement doesn't seem to run. Any ideas?

Chris Nakagaki (Zsoldier)

http://tech.zsoldier.com

[nirvy]

Does it work any better if you do:

Try {$VM = @(get-vm -id TemplateID -ea stop)} Catch {$Template = @(get-template -id TemplateID)}

[LucD]

That is indeed the solution.

The reason is that the Try/Catch/Finally construct works only for terminating errors.

Normally a Get-VM for a non-existing guest is a non-terminating error.

By adding the -ErrorAction Stop, the error became a terminating error.

See also

Get-Help about_Try_Catch_Finally

____________

Blog: LucD notes

Twitter: lucd22

[Zsoldier]

Ahh, that makes sense. Thanks for the explanation Luc. I had been reading the help, but didn't realize that get-vm was exiting w/ a non-terminating error.

Chris Nakagaki (Zsoldier)

http://tech.zsoldier.com