如何使用MSI包卸载topshelf服务？

I have several services developed with topshelf that are installed using an MSI created in InstallShield (using basic MSI). We install them using a custom action passing the install parameter. When it comes to uninstall, we use a custom action passing the uninstall parameter (we also have custom actions that start and stop as appropriate). All of this is working, but the user is presented with a dialog asking them to shut down those services otherwise a reboot may be required otherwise. If, however, the user elects to continue anyway, our custom action runs, stopping and uninstalling the service.I have several services developed with topshelf