WPF listView中【checkbox】实现全选功能

  List<xxx> nn = new List<xxx>();
        public MainWindow()
        {
            InitializeComponent();

            for (int i = 0; i < 10; i++)
            {
                nn.Add(new xxx { name = "nihaohao" + i, bol = false });
            }
            listview.ItemsSource = nn;
        }

        // public bool bb { get; set; }
        
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            foreach (xxx item in nn)
            {
                //Debug.WriteLine(item.name + ":" + item.bol);
                item.bol = true; //吧列表中checkbox属性设置为true
            }
        }

//xxx 表类
//实现INotifyPropertyChanged实现更改通知
public class xxx : INotifyPropertyChanged
    {
        private string _name;
        public string name
        {
            get { return _name; }
            set
            {
                _name = value;
                OnPropertyChanged("name");
            }
        }

        private bool _bol;
        public bool bol
        {
            get { return _bol; }
            set
            {
                _bol = value;
                OnPropertyChanged("bol");
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        public void OnPropertyChanged(string args)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(args));
            Debug.WriteLine(name);
        }
    }