NOOB Q: Does the New-Object -ComObject cmdlet not respect -ErrorAction SilentlyContinue?

Question

I'm trying to test to see if a set of COM interfaces have been registered on the system or not.  In my script I'm running the New-Object command to attempt to instantiate a COM object using the ProgID of each of the COM interfaces but I don't want errors
displayed to the screen when one of the ProgIDs isn't registered on the system.  The New-Object help says it supports the <CommonParameters> but when I attempt to use "-ErrorAction SilentlyContinue" I still get the errors displayed
in the PoSh session.
I'm running the cmdlet below and getting the error output below that.  Is this the correct way to test a set of COM interfaces or is there another option?  If this is the correct way, is there a way to run the command such that it doesn't display
an error for the COM interfaces that aren't registered?
Command:
New-Object -ComObject "myProgID" -ErrorAction SilentlyContinue
Error:
New-Object : Retrieving the COM class factory for component with CLSID {00000000-0000-0000-0000-000000000000} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 REGDB_E_CLASSNOTREG)).
At line:1 char:11
+ $comObj = New-Object -ComObject "Fake_ProgID" -ErrorAction SilentlyContinue
+           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ResourceUnavailable: (:) [New-Object], COMException
    + FullyQualifiedErrorId : NoCOMClassIdentified,Microsoft.PowerShell.Commands.NewObjectCommand

Answer 1

yep, use try / catch:
try { New-Object -ComObject "myProgID" -ErrorAction Stop } catch { "not found" }
Sam Boutros, Senior Consultant, Software Logic, KOP, PA http://superwidgets.wordpress.com (Please take a moment to Vote as Helpful and/or Mark as Answer, where applicable) _________________________________________________________________________________
Powershell: Learn it before it's an emergency http://technet.microsoft.com/en-us/scriptcenter/powershell.aspx http://technet.microsoft.com/en-us/scriptcenter/dd793612.aspx