Is there any way to run custom code during the installation or uninstallation of a ClickOnce app?
This question has been asked before here, but that was a long time ago, the answer given there was IMHO very kludgy, and I'm kind of hoping that the later releases of VS have provided a more elegant solution...
Check the following articles:
Administering ClickOnce Deployments
Walkthrough: Creating a Custom Installer for a ClickOnce Application
This solution is not very elegant but works:
ClickOnce application autostart and clean uninstall or the way to customize ClickOnce installation
ClickOnce does not have the capability to do post-install or post-uninstall actions EXCEPT for the VSTO applications. Is your app a VSTO application?