No such thing as a standard directory for GAC.  ComponentSearch would be the 
ideal (you shouldn't need a FileSearch) but I hear you on the GUID problem.  
Have to verify that the guid would remain stable.

-----Original Message-----
From: Kevin Fischer [mailto:kevinfischer...@hotmail.com] 
Sent: Friday, February 06, 2009 14:59
To: wix-users@lists.sourceforge.net
Subject: [WiX-users] Recommendations needed on checking GAC for installation or 
ComponentSearch


I need to determine if a feature from SQL Server has been installed (SMO) in my 
MSI.  This feature can be installed via the core SQL Server package or via 
standalone redist MSIs.
 
I know I need only a few DLLs installed by this feature's component into the 
GAC.
 
Is the recommended way to detect this via ComponentSearch/FileSearch (I know 
the Component IDs) or a DirectorySearch/FileSearch on the GAC?
 
My concern with the ComponentSearch would be if they revise their GUIDs in the 
future.  
 
If I do the GAC search, is there a WIX variable I can use for the GAC directory?
 
Thanks,
Kevin
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