[wix-users] Custom Action

[Richard D. Brown II]

Does anyone know how to access the cab embedded in an msi?
 
From: Joel Budreau [mailto:joel.budreau at gmail.com] 
Sent: Monday, December 19, 2016 7:30 PM
To: Richard D. Brown II <rdbrownii at comcast.net>
Subject: Re: [wix-users] Custom Action
 
Sorry, I'm not sure how to access the file if the cabs are embedded in the MSI itself. We tend to package those files into the Binary table, and extract them from there using MsiRecordReadStream - http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/Extract-Binary-file-from-MSI-C-td7582039.html
 
 
On Mon, Dec 19, 2016 at 4:11 PM, Richard D. Brown II <rdbrownii at comcast.net <mailto:rdbrownii at comcast.net> > wrote:
Thanks. What I couldn't figure out how to do is get a reference or path to the msi's embedded cab file so I can use DTF's classes to extract the file I need.  Any suggestions?
 



On Mon, Dec 19, 2016 at 7:07 PM -0500, "Joel Budreau" <joel.budreau at gmail.com <mailto:joel.budreau at gmail.com> > wrote:
Extracting files from a Cabinet - https://msdn.microsoft.com/en-us/library/ff797927(v=vs.85).aspx
 
On Mon, Dec 19, 2016 at 3:58 PM, Richard D. Brown II <rdbrownii at comcast.net <mailto:rdbrownii at comcast.net> > wrote:
Hi All,

Is there a way to access the contents of the .cab file from within an
installer's custom action (written in C#)?  I need to get the main .exe
being installed for licensing verification.  This needs to happen before
anything gets installed on the client.  I have an alternate solution of
including the exe as an embedded resource in the custom action dll, but it's
not an ideal solution.  For one, it's already embedded in the cab file
within the msi and it could be easily missed when updating the application
and the install.

I'd appreciate any help (hopefully with a code sample showing how to do it)
you can give.

Thanks. RickB

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