private bool IsInstallOrUninstall() { if (commandLine.IsInstall || commandLine.IsUninstall) { // Tis is an installation (Setup file or "/install" arg) or uninstallation (/uninstall arg) // Need some temp main window when only message boxes will be shown for commands MainWindow = CreateTempMainWindow(); installer.InstallOrUninstall(); return(true); } return(false); }