using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Test.WpfApplication1
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        private string _BindData = string.Empty;
        public string BindData
        {
            get
            {
                if (_BindData.Length == 0)
                    _BindData = "this is BindData";
                return _BindData;
            }
            set
            {
                _BindData = value;
            }
        }
        private string _TextBoxData = string.Empty;
        public string TextBoxData
        {
            get
            {
                if (_TextBoxData.Length == 0)
                    _TextBoxData = "this is data";
                return _TextBoxData;
            }
            set
            {
                if (_TextBoxData != value)
                {
                    _TextBoxData = value;
                    OnPropertyChanged("TextBoxData");
                }
            }
        }
        ObservableCollection<StudentModel> StudentModelList = new ObservableCollection<StudentModel>()
            {
                new StudentModel() { Number = Guid.NewGuid().ToString().Substring(0,2),Name = "张三"},
                new StudentModel() { Number = Guid.NewGuid().ToString().Substring(0,2),Name = "李四"},
                new StudentModel() { Number = Guid.NewGuid().ToString().Substring(0,2),Name = "王五"},
            };

        public event PropertyChangedEventHandler PropertyChanged;
        public virtual void OnPropertyChanged(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        private ObservableCollection<StudentModel> _GuidList;
        public ObservableCollection<StudentModel> GuidList
        {
            get { return _GuidList; }
            set
            {
                _GuidList = value;
                OnPropertyChanged("GuidList");
            }
        }

        public MainWindow()
        {
            InitializeComponent();
            DataContext = this;

            GuidList = StudentModelList;

            Task.Factory.StartNew(() =>
            {
                for (int i = 0; i < 10000; i++)
                {
                    foreach (var item in GuidList)
                    {
                        item.Number = Guid.NewGuid().ToString().Substring(0, 2);
                    }
                    GuidList = new ObservableCollection<StudentModel>(StudentModelList);


                    TextBoxData = DateTime.Now.ToString("HH:mm:ss.fff");
                    Thread.Sleep(1000);
                }
            });
        }

    }
}