Hi flutophilus,
As for the VS setup project overwriting old files(when install the same
program again on a box), it is actually not ovewritting, but remove and
install. VS setup program(or setup program created via installer sdk) will
always ensure one instance of the same program(via a uniqueID of the setup
program) on a machine. Thus, when you install the same program on a machine
that has already installed it, the process is as below:
** setup program first remove the original installed instance
** setup program install a new one
For your case here, I think the problem can be changed to "how to keep the
certain data file of a previous installed instance when installing the same
program again". I think you can consider the following means;
1. create a custom Action for your setup program to create the config file
for your application, also the creation code logic will check whether the
file is existing, if not, create it.
2. In the "uninstall" part of the custom action, do not remove the config
file
#Walkthrough: Redirecting an Application to Target a Different XML Web
Service at Installation
http://msdn2.microsoft.com/en-us/library/5k10s063(VS.80).aspx
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
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