public StartViewModel() { images = new PagedEnumerable <byte[]>( NBAContext.Instance.Pictures.Select(p => p.Img).ToArray(), PAGE_SIZE ); UpdateImageInPage(); NextImagePage = new ActionCommand(() => { images.NextPage(); UpdateImageInPage(); }); PriviusImagePage = new ActionCommand(() => { images.PriviusPage(); UpdateImageInPage(); }); OpenLoginPage = new ActionCommand(() => NavigationManager.OpenPage(new LoginPage())); OpenVisitorPage = new ActionCommand(() => NavigationManager.OpenPage(new VisitorMainPage())); }