C# DelegateCommand类代码示例

        public LoggedInUserViewModel()
        {
            EventServiceFactory.EventService.GetEvent<GenericEvent<User>>().Subscribe(x =>
            {
                if (x.Topic == EventTopicNames.UserLoggedIn) UserLoggedIn(x.Value);
                if (x.Topic == EventTopicNames.UserLoggedOut) UserLoggedOut(x.Value);
            });
            LoggedInUser = AppServices.CurrentLoggedInUser;

            LogoutUserCommand = new DelegateCommand<User>(x =>
            {
                if (AppServices.CanNavigate())
                {
                    if (AppServices.IsUserPermittedFor(PermissionNames.OpenNavigation))
                    {
                        EventServiceFactory.EventService.PublishEvent(EventTopicNames.ActivateNavigation);
                    }
                    else
                    {
                        AppServices.CurrentLoggedInUser.PublishEvent(EventTopicNames.UserLoggedOut);
                        AppServices.LogoutUser();
                    }
                }
            });
        }

        public CalendarViewModel(ICalendarService calendarService, IRegionManager regionManager)
        {
            this.synchronizationContext = SynchronizationContext.Current ?? new SynchronizationContext();

            this.openMeetingEmailCommand = new DelegateCommand<Meeting>(this.OpenMeetingEmail);

            this.meetings = new ObservableCollection<Meeting>();

            this.calendarService = calendarService;
            this.regionManager = regionManager;

            this.calendarService.BeginGetMeetings(
                r =>
                {
                    var meetings = this.calendarService.EndGetMeetings(r);

                    this.synchronizationContext.Post(
                        s =>
                        {
                            foreach (var meeting in meetings)
                            {
                                this.Meetings.Add(meeting);
                            }
                        },
                        null);
                },
                null);
        }

 public MainViewModel()
 {
     SearchItemCommand = new DelegateCommand(SearchItem);
     UpdateHire1Command = new DelegateCommand(UpdateHire1);
     UpdateHire2Command = new DelegateCommand(UpdateHire2);
    
 }

 public RenameAccountDialogViewModel(ShellViewModel shell, Account account, string currentName)
     : base(shell)
 {
     _account = account;
     _rename = new DelegateCommand(RenameAction);
     CurrentAccountName = currentName;
 }

        public InfoLinkDecal()
        {
            MetaData = new InfoLinkMetaData() { Source = "http://" };
            Stretch = System.Windows.Media.Stretch.Uniform;
            Size = 1;
            CanResize = false;
            Stretch = System.Windows.Media.Stretch.None;
            Center = new System.Windows.Point(1, 1);
            PinPoint = new System.Windows.Point(1, 1);
            CanMove = false;

            OpenUrl = new DelegateCommand(() =>
            {
                if (!MetaData.Source.StartsWith("http://"))
                {
                    MetaData.Source = "http://" + MetaData.Source;
                }
            #if WINDOWS_PHONE
                Microsoft.Phone.Controls.PhoneApplicationFrame frame = Application.Current.RootVisual as Microsoft.Phone.Controls.PhoneApplicationFrame;
                frame.Navigate(new Uri(MetaData.Source));
            #elif SILVERLIGHT

                HtmlPage.Window.Navigate(new Uri(MetaData.Source), "_blank");
            #else
                Process.Start(MetaData.Source);
            #endif
            }, CanOpenUrl);
        }

 public ConfigService()
 {       
     LoadAdminInfo();
     LoadConfig();
     SaveAdminInfoCommand = new DelegateCommand(SaveAdminInfo);
     SaveConfigCommand = new DelegateCommand(SaveConfig);
 }

        public GeoRegionMaintenanceViewModel(IModuleController moduleController, IDataRepository repository, IEventAggregator eventAggregator)
        {
            _moduleController = moduleController;
            _repository = repository;
            _eventAggregator = eventAggregator;

            ShowView = _moduleController.ShowViewCommand;
            NavigationDetails = _moduleController.NavigationDetails;

            ChangeMetaPanel = new DelegateCommand<bool?>(ChangeMetaViewPanel);
            ChangeGeoPanel = new DelegateCommand<bool?>(ChangeGeoViewPanel);

            DeleteMetaRegionCommand = new DelegateCommand(DeleteMetaRegion);
            EditMetaRegionCommand = new DelegateCommand(EditMetaRegion);
            AddNewMetaRegionCommand = new DelegateCommand(AddNewMetaRegion);
            DeleteMetaRegionMappingCommand = new DelegateCommand(DeleteMetaRegionMapping);
            AddMetaRegionMappingCommand = new DelegateCommand(AddMetaRegionMapping);
            DeleteGeoRegionCommand = new DelegateCommand(DeleteGeoRegion);
            EditGeoRegionCommand = new DelegateCommand(EditGeoRegion);
            CreateNewGeoRegionCommand = new DelegateCommand(CreateNewGeoRegion);

            _metaRegions = new ObservableCollection<t033_meta_region>();
            _metaRegionMappings = new ObservableCollection<t031_geo_code>();
            _geoRegions = new ObservableCollection<GeoRegionViewModel>();

            _moduleController.SwitchPanel(MaintenanceRegionNames.MetaRegionRegion, MaintenanceViewNames.MetaRegionView);
            _moduleController.SwitchPanel(MaintenanceRegionNames.GeoRegionRegion, MaintenanceViewNames.GeoRegionView);
            _moduleController.SwitchPanel(MaintenanceRegionNames.MetaRegionMappingRegion, MaintenanceViewNames.MetaRegionMappingView);

            _eventAggregator.GetEvent<RefreshRegionsEvent>().Subscribe(InitializeData);
        }

 public NodeMasterViewModel(NodeConfig config)
 {
     m_Config = config;
     Name = m_Config.Name;
     ConnectCommand = new DelegateCommand(ExecuteConnectCommand);
     ThreadPool.QueueUserWorkItem((c) => InitializeWebSocket((NodeConfig)c), config);
 }

        public MechanicalNavigationViewModel(SearchFilterControl searchFilterControl)
        {
            CompositionInitializer.SatisfyImports(this);

            mSearchFilterControl = searchFilterControl;

            mGridRefreshTimer.Interval = TimeSpan.FromMilliseconds(500);
            mGridRefreshTimer.Tick += (sender, eventArgs) => { mGridRefreshTimer.Stop(); ProcessSearchFilter(); };

            ImportNewMechanicalsCommand = new DelegateCommand<object>(ImportNewMechanicalsHandler, CanImport);
            ImportNewMechanicalComponentsCommand = new DelegateCommand<object>(ImportNewMechanicalComponentsHandler, CanImport);

            ImportNewRelatedDocumentsCommand = new DelegateCommand<object>(ImportNewRelatedDocumentsHandler, CanImport);
            ImportExistingMechanicalsCommand = new DelegateCommand<object>(ImportExistingMechanicalsHandler, CanImport);
            ImportExistingMechanicalComponentsCommand = new DelegateCommand<object>(ImportExistingMechanicalComponentsHanlder, CanImport);

            CreateAttachmentsCommand = new DelegateCommand<object>(CreateAttachmentsHandler, CanImport);
            PreferredEquipmentCommand = new DelegateCommand<object>(PreferredEquipmentHandler, x => (CMS.EffectivePrivileges.AdminTab.CanView || CMS.EffectivePrivileges.MechanicalTab.CanView));

            ClearFilterCommand = new DelegateCommand<object>(x => { ClearControls(); ProcessSearchFilter(); searchFilterControl.SetFilterIsOn(false); }, x => true);
            SearchCommand = new DelegateCommand<object>(x => ProcessSearchFilter(), x => true);
            KeywordKeyCommand = new DelegateCommand<object>(x => ProcessSearchFilter(), x => true);
            MaintSysIdKeyCommand = new DelegateCommand<object>(x => ProcessSearchFilter(), x => true);

            LoadData();
        }

 public LoginViewModel(IEventAggregator messageBus)
 {
     _messageBus = messageBus;
     LoginCommand = new DelegateCommand<object>(Login);
     _serviceFacade = ((ServiceLocator)App.Current.Resources["ServiceLocator"]).ServiceFacade;
     _serviceFacade.LoginCompletedEvent += new EventHandler<HsrOrderApp.UI.Silverlight.AuthenticationService.LoginCompletedEventArgs>(LoginViewModel_LoginCompletedEvent);
 }

        public ActionTriggerViewModel(BindableNetworkValueBag<string> networkValueCollection)
        {
            _networkValueCollection = networkValueCollection;

            PullItemsAgainCommand = new DelegateCommand(ExecutePullItemsAgain, CanExecutePullItemsAgain);
            ClearCommand = new DelegateCommand(ExecuteClear, CanExecuteClear);
        }

        public MyDayViewModel(
            [Import] IEventAggregator aggregator,
            [Import] ITasksService tasksService,
            [Import] IProjectsService projectsService,
            [Import] ITeamService teamService,
            [Import] IBackgroundExecutor executor,
            [Import] IAuthorizationService authorizator)
            : base(aggregator, tasksService, projectsService, teamService, executor, authorizator)
        {
            aggregator.Subscribe<MemberProfile>(ScrumFactoryEvent.SignedMemberChanged, OnSignedMemberChanged);

            aggregator.Subscribe<Task>(ScrumFactoryEvent.TaskAdded, t => { UpdateTasks(); });
            aggregator.Subscribe<Task>(ScrumFactoryEvent.TaskAssigneeChanged, t => { UpdateTasks(); });
            aggregator.Subscribe<Task>(ScrumFactoryEvent.TaskChanged, t => { UpdateTasks(); });

            aggregator.Subscribe<ICollection<ProjectInfo>>(ScrumFactoryEvent.RecentProjectChanged, prjs => {
                List<ProjectInfo> prjs2 = new List<ProjectInfo>(prjs);
                if (MemberEngagedProjects != null)
                    prjs2.RemoveAll(p => MemberEngagedProjects.Any(ep => ep.ProjectUId == p.ProjectUId));
                RecentProjects = prjs2.Take(8).ToList();
                OnPropertyChanged("RecentProjects");
            });

            OnLoadCommand = new DelegateCommand(OnLoad);
            RefreshCommand = new DelegateCommand(Load);
            ShowMemberDetailCommand = new DelegateCommand<MemberProfile>(ShowMemberDetail);
            CreateNewProjectCommand = new DelegateCommand(CreateNewProject);

            eventsViewSource = new System.Windows.Data.CollectionViewSource();
        }

 public ProcessingDialogViewModel()
 {
     LoadParameters = new DelegateCommand<MassSpecStudio.Core.Domain.Algorithm>(OnLoadParameters);
     _algorithms = ServiceLocator.Current.GetAllInstances<IAlgorithm>().ToList();
     _selectedAlgorithm = _algorithms.FirstOrDefault();
     _recentAlgorithmsUsed = RecentAlgorithms.Read();
 }

        public dynNodeViewModel(dynNodeModel logic)
        {
            nodeLogic = logic;

            //respond to collection changed events to sadd
            //and remove port model views
            logic.InPorts.CollectionChanged += inports_collectionChanged;
            logic.OutPorts.CollectionChanged += outports_collectionChanged;

            logic.PropertyChanged += logic_PropertyChanged;
            dynSettings.Controller.DynamoViewModel.Model.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(Model_PropertyChanged);

            DeleteCommand = new DelegateCommand(DeleteNodeAndItsConnectors, CanDeleteNode);
            SetLacingTypeCommand = new DelegateCommand<string>(new Action<string>(SetLacingType), CanSetLacingType);
            SetStateCommand = new DelegateCommand<object>(SetState, CanSetState);
            SelectCommand = new DelegateCommand(Select, CanSelect);
            ViewCustomNodeWorkspaceCommand = new DelegateCommand(ViewCustomNodeWorkspace, CanViewCustomNodeWorkspace);
            SetLayoutCommand = new DelegateCommand<object>(SetLayout, CanSetLayout);
            SetupCustomUIElementsCommand = new DelegateCommand<dynNodeView>(SetupCustomUIElements, CanSetupCustomUIElements);
            ValidateConnectionsCommand = new DelegateCommand(ValidateConnections, CanValidateConnections);

            //Do a one time setup of the initial ports on the node
            //we can not do this automatically because this constructor
            //is called after the node's constructor where the ports
            //are initially registered
            SetupInitialPortViewModels();

            dynSettings.Controller.RequestNodeSelect += new NodeEventHandler(Controller_RequestNodeSelect);
        }

        public RiskAnalyserViewModel(ICustomerService customerService)
        {
            _customerService = customerService;

            try
            {
                _customerService.Init();
                cutSettledBets = new ObservableCollection<CustomerBet>(_customerService.CustomerSettledBets);
                cutUnSettledBets = new ObservableCollection<CustomerBet>(_customerService.CustomerUnSettledBets);
            }
            catch (Exception e)
            {
                Header = e.Message;
            }

            SettleBets = new ObservableCollection<Bet>(cutSettledBets.SelectMany(d => d.Bet).ToList());
            UnSettleBets = new ObservableCollection<Bet>(cutUnSettledBets.SelectMany(d => d.Bet).ToList());

            ShowSettled = new DelegateCommand(VisibleSettled);

            ShowUnSettled = new DelegateCommand(VisibleUnSettled);

            ShowUnusalWinning = new DelegateCommand(UnsualWinning);

            ShowUnusalStake = new DelegateCommand(UnusalStake);

            ShowHighlyUnusalStake = new DelegateCommand(HighlyUnusalStake);

            ShowBigWin = new DelegateCommand(BigWin);

            Header = "Settled Bets";
        }