/// <summary> /// Initalize modal service. /// </summary> /// <param name="serviceContainer"></param> void InitalizeModalService(IUnityContainer serviceContainer) { // Setup navigation service. var modalService = new ModalService(serviceContainer); // WelcomePage modalService.Register(typeof(WelcomeViewModel), typeof(WelcomePage)); // AboutPage modalService.Register(typeof(AboutViewModel), typeof(AboutPage)); serviceContainer.RegisterInstance <IModalService>(modalService); }