WPF Binding INotifyPropertyChanged 다중 스레드 이해

4

예

먼저 하나의 예를 보겠습니다.
Person.cs

public class Person : ObservableObject,INotifyPropertyChanged

    {

        private string _testName;

        private ObservableCollection<string> _names=new ObservableCollection<string>();



        public string TestName

        {

            get

            {

                return _testName;

            }

            set

            {

                _testName = value;

                OnPropertyChanged();

            }

        }



        public ObservableCollection<string> Names

        {

            get { return _names; }

            set

            {

                _names = value;

                RaisePropertyChanged(()=>Names);

            }

        }



        public event PropertyChangedEventHandler PropertyChanged;



        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)

        {

            PropertyChangedEventHandler handler = PropertyChanged;

            if (handler != null)

            {

                handler(this, new PropertyChangedEventArgs(propertyName));

            }

        }

    }

MainWindow.xaml.cs

public partial class MainWindow : Window, INotifyPropertyChanged

    {

        private int _currentId;

        private Person _person;



        public Person Person

        {

            get

            {

                return _person;

            }

            set

            {

                _person = value;

                OnPropertyChanged();

            }

        }



        public MainWindow()

        {

            InitializeComponent();



            this.DataContext = this;



            Person = new Person();



            Person.TestName = "TestName";

            Person.Names.Add("string");



            _currentId = Thread.CurrentThread.ManagedThreadId;



            DispatcherHelper.Initialize();

        }



        public event PropertyChangedEventHandler PropertyChanged;



        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)

        {

            PropertyChangedEventHandler handler = PropertyChanged;

            if (handler != null)

            {

                handler(this, new PropertyChangedEventArgs(propertyName));

            }

        }



        private void ButtonBase_OnClick(object sender, RoutedEventArgs e)

        {

            Task.Factory.StartNew(() =>

            {

                if (_currentId == Thread.CurrentThread.ManagedThreadId)

                {

                    Person = new Person();

                }

                else

                {

                    //              ？

                    Person.TestName = "NotSame";



                    //   ？

                    Person.Names.Add("Hello");

                }

            });





        }



    }

주석에 주의하다
결과적으로TestName 속성은 UI에 올바르게 업데이트될 수 있지만 집합 속성Names는 그렇지 않습니다.
나머지 의 이해 는 한 편 은 잘 썼다
http://www.cnblogs.com/wpcockroach/p/3909081.html