I should use OnlyDetect=no to uninstall the prior version if it exists. Therefore only prior version can be installed at the moment of starting the new installation. Then, I mentioned the way of getting assembly version because this is the common rule of out software - the version of the assembly always is the same as the version of the installed product. Currently I use more straightforward way to detect the prior version - installer writes the registry key with the version number and reads it. However, this way has obvious disadvantages. I still would like to know whether Wix has the native way to obtain the installed product version number.
Wilson, Phil wrote: > > It depends how many prior versions you've got as to how cumbersome this > is, but if you had 1.0, 2.0 and 3.0 then you can simply use upgrade > elements to detect each of them with onlydetect=yes, and if the > corresponding property is set show a message. > > It's not obvious what version you really want - the product version of > your installed product is the same as the version of an installed assembly > only if you deliberately made it the same. > Phil Wilson > -- View this message in context: http://n2.nabble.com/Detect-the-version-of-already-installed-product.-tp1344094p1351709.html Sent from the wix-users mailing list archive at Nabble.com. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
