That's because it returns a "decorated object" instead of just the name. Lots
of PowerShell cmdlets do that. Even some that APPEAR to return simple text -
don't.
It doesn't generate an error for the same reason that
$null.name_that_doesnt_exist
doesn't return an error. :)
IIRC, it's called "lazy member evaluation." If you want the details, I can look
them up.
If you WANT it to return an error, then
Set-StrictMode -Version 2.0
(I write scripts with StrictMode set. It can help find bugs. However, you have
to verify that properties exist before you access them - which can make code
look a little weird sometimes.)
Now - I don't like the way you are doing that error detection. :)
If you track the performance of try/catch - it's SLOW. Much much slower than
what I recommend below:
$registryNameObject = Get-ItemProperty -Name "name" -Path
"$RegPath\key" -EA 0
If( $? )
{
Write-host $registryNameObject.Name
}
Else
{
Write-Error $error[ 0 ].ToString()
}
Regards,
Michael B.
From: Joseph L. Casale [mailto:[email protected]]
Sent: Wednesday, April 04, 2012 11:24 AM
To: NT System Admin Issues
Subject: Powershell error handling
Trying to wrap my head around the following case where you have a reg value you
want to obtain.
Get-ItemProperty -Name "name" -Path "$RegPath\key"
To get that value into a variable:
(Get-ItemProperty -Name "name" -Path "$RegPath\key" -EA 1).name
If the value doesn't actually exists, you can trap that error in a try/catch.
For the sake of curiosity, why doesn't this generate an error:
(Get-ItemProperty -Name "name" -Path "$RegPath\key" -EA
1).name_that_doesnt_exist
Its already odd enough you need extract it "twice" in the command...
Thanks!
jlc
~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
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