Set the UpdateType property of the AutomaticUpdater in your form's constructor. Possible values:
// The AutomaticUpdater will check, download, and install the update completely silently.Automatic
// The AutomaticUpdater will check for and download updatest automatically, then notify the user.CheckAndDownload
// The AutomaticUpdater will only check for updates and notify the user if updates are found.OnlyCheck
// The AutomaticUpdater will do nothing. All checking must be done manually.DoNothing