WiX burn Upgrade shows uninstall UI at the end -

i trying create custom ui wix , burn. i'm done except 1 thing. in end of installation upgrading(for exaple 1.0.0 1.1.0) uninstall previous version starts , ui of shows. question how should handle user doesn't see uninstall ui in end.

when performing upgrade of burn-based installer, process upgrade each of msis bundled inside installer, uninstall previous version's bundle using commandline arguments -uninstall -quiet -burn.related.upgrade -burn.embedded (and bunch of other stuff). if you're writing custom ui in .net, present in wix bootstrapperapplication base class these property values:

• command.action property launchaction.uninstall
• command.display property of none or embedded

when command.display set none or embedded, custom ui need hide (ie: don't display ui). guess you're not hiding ui in scenario, why it's displaying during upgrade.