The fact that you are trying to do this indicates that you are trying to break the component rules that says to never install two components sharing the name and target location.
What you really want to do is have an identical component in both the MSI's that I presume you have. That will allow Windows Installer to properly keep track of reference counting for instance. Imagine the following scenario: 1. The user installs the first product that contains your GAC assembly and the assembly is registered. 2. The user installs your product that finds the assembly already in GAC and does not try to install it a second time. 3. The user uninstalls the first product and the assembly gets removed from GAC. 4. The user tries to run your application that fails because the required assembly is no longer in GAC. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Patrick Schmid Sent: Monday, April 09, 2007 8:52 PM To: wix-users@lists.sourceforge.net Subject: [WiX-users] detect installed .net assembly How do I figure out with wix3 whether a particular .net assembly is already installed (and registered in the GAC)? I'd like to write a condition to not install an assembly if the user has it already installed. Thanks, Patrick Schmid ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
