Uninstall: distinguish regular from upgrade

[Robert Kock]

Within the 'Upgrades' page of my project I set the order to "Uninstall old version first and then install new version".

I have a custom action that runs only when uninstalling but its actions depend on whether we're dealing with a "regular uninstall" or "replaced by a new version".
I could of course create 2 different custom actions: The first one runs only during a regular uninstall and the second one only during an uninstall of an old version being replaced by a new one. This however would create partial duplication of code that makes the maintenance more complicated.

My question is: is there a property whose value I can read within the custom action in order to be able to distinguish the mode of the uninstall?

FYI: My custom action runs AFTER the "Finish Execution" step within the "Install Execution Stage"

[Catalin]

Hello Robert,

In order to achieve this, you could use the OLDPRODUCTS property which is set only during a major upgrade.

We can use the following logic:

- if the property exists, it means it's an upgrade

- if it doesn't, it means it's a regular uninstall

Hope this helps!

Best regards,
Catalin

[Robert Kock]

Hi Catalin,

The property OLDPRODUCTS appears absent both during a regular uninstall and upgrade.
However, I did the trick you suggested checking the UPGRADINGPRODUCTCODE property.
Things work as they should now.

Thanks,
Robert

[Catalin]

You are always welcome, Robert!

Glad to hear everything is working as expected now.

Best regards,
Catalin