/// <summary> /// Initializes a new instance of the MainViewModel class. /// </summary> /// <param name="navigationService"> /// The navigation Service. /// </param> /// <param name="logManager"> /// The log manager. /// </param> /// <param name="sessionService">The session service.</param> public MainViewModel(INavigationService navigationService, ILogManager logManager, ISessionService sessionService) { _navigationService = navigationService; _logManager = logManager; _sessionService = sessionService; LogoutCommand = new RelayCommand( () => { _sessionService.Logout(); // todo navigation _navigationService.Navigate<LoginView>(); }); AboutCommand = new RelayCommand( async () => { Exception exception = null; try { // todo navigation // _navigationService.Navigate(new Uri(Constants.AboutView, UriKind.Relative)); } catch (Exception ex) { exception = ex; } if (exception != null) { await _logManager.LogAsync(exception); } }); }