View Full Version : Question about upgrading an application with InstallShield

11-21-2001, 06:01 PM
I am currently evaluating both InstallShield Express and Developer for my company.

One question I have is this: When performing upgrades with either of these versions, can the installer detect files that have been modified?

For example, if "foo.txt" is a part of my original install, and the user goes in and adds some lines of text to it, will the installer be able to recognize that this is not the same as the copy of the file that was originally installed?

If InstallShield does not have this ability, is it feasible to implement that ability through a script or custom action?

Thanks for any input.


11-26-2001, 10:21 AM
I think by default it will still pick this file as the one that was installed because the name is the same. If you don't want this file un-installed however you could use custom actions to

1. Rename the file before an uninstall (so it's not removed)
2. Or make a copy before uninstall starts and then copy it back to original location (from temp location) at the end of the uninstall