If a product uninstall is happening because of a major upgrade, I believe the
property
UPGRADINGPRODUCTCODE is set. You could use this to condition your custom
action.
Rob
Simon Detheridge wrote:
> Hi,
>
> I have a wix-based installer in which I want to do a major upgrade.
>
> I have an old version of the product that has a custom action that
> fires during uninstall, unless a property is specified. i.e. If I just
> uninstall my application, the action fires, but if I 'msiexec
> /X'{MYGUID-...} DONTDOACTION=1' then it doesn't.
>
> I'd like it to *not* fire the action, if I'm uninstalling it as part
> of the major upgrade.
>
> I guess I could make a custom action that called msiexec with the
> relevant parameter, but I would prefer to have this taken care of by
> the normal upgrade mechanism if at all possible, for obvious reasons.
>
> Is there a way I can get the uninstaller to know about a property?
> I've tried setting DONTDOACTION=1 in my installer, but it doesn't
> propagate as far as the uninstall script. I've noticed in the
> install.log there's a "Command Line" listed when it boots the
> uninstall script, but I can't figure out how to get the property in
> there.
>
> Is there a way to do what I want to do?
>
> Thanks,
> Simon
>
>
>
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