Is this a major upgrade scenario? I would hope you aren't planning on invoking the uninstall of the previous version from a CA.
If it is a Major Upgrade, if you were lucky enough to have this old data in its own feature then you could look at the RemoveFeatures attribute of the MajorUpgrade element. You could populate that based off of a choice in the UI of your new install. -----Original Message----- From: Alec Swan [mailto:alecs...@gmail.com] Sent: Tuesday, October 09, 2012 4:52 PM To: General discussion for Windows Installer XML toolset. Subject: [WiX-users] Prompting the user during an upgrade Hello, During an upgrade we need to prompt the user whether the data from the old installation should be preserved and migrated to the new installation format. We can currently do this if the old version was installed with NullSoft as follows: 1. If UninstallString exists in the registry then prompt the user if data should be preserved 2. Run UninstallString command from a Wix custom action and pass the choice made by the user as a command line switch 3. Proceed with MSI-based installation Now we need to do the same when the old installation is MSI-based. We can currently SILENTLY uninstall MSI-based product preserving data by passing PRESERVE_DATA=true as a command line switch. So, technically we can run silent MSI uninstall in step 2 above, but I am worried that this will interfere with uninstall that is called automatically by MSI. What is the right way to do this with Wix? Thanks, Alec ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
