Thanks Pally for your reply. I'll elaborate a bit more about what we need. 
Basically what our client needs is when installing a patch, to check if certain 
middleware assembly versions  is installed (which our client will install). 
When we make the application build it is not certain what those middleware 
assemblies versions will be, so I was thinking we could pass the version 
numbers with the patch to the custom action to check whether they are installed 
or not, by using properties or some other means, but I'm getting the feeling 
that msp's don't support properties.

Something I just thought about, can a custom action access a file in the 
contents cab file of the patch? If it's possible then I can include an xml file 
and access that to get the version numbers. Or another thought I just had is to 
even install the xml file to a dir and then to run the custom action after 
InstallFiles, and the report an error if the assemblies were not found. What 
are your thoughts on this?

Regards,

Henk Roos


-----Original Message-----
From: Pally Sandher [mailto:pally.sand...@iesve.com]
Sent: Tuesday 16 November 2010 13:13
To: General discussion for Windows Installer XML toolset.
Subject: Re: [WiX-users] Patching and properties

Patches don't have versions. The version would be the ProductVersion of
the new version your patch is upgrading the old version to.

I don't quite understand your question regarding passing properties to
Custom Actions. Can you elaborate on what you're trying to do?

Palbinder Sandher
Software Deployment & IT Administrator
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F: +44 (0) 141 945 8501

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-----Original Message-----
From: Henk Roos [mailto:henk.r...@aricent.com]
Sent: 16 November 2010 09:39
To: wix-users@lists.sourceforge.net
Subject: [WiX-users] Patching and properties

Hi there,

Is it possible to pass a property value somehow to a custom action when
installing a new patch (in stead of passing it with the command line)?
And also I want to know if it is possible to get the patch version being
installed with a custom action. I did run the following command :
"misiexec /update patch.msp /l*v logfile.txt", but I didn't see the a
patch version property somewhere, only the patch description etc

Regards,

Henk Roos


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