具有可观察集合的C# wpf列表视图绑定问题

using System.Collections.ObjectModel;
using System.ComponentModel;

public class ViewModel : INotifyPropertyChanged
{
    private ObservableCollection<string> items;

    public ObservableCollection<string> Items
    {
        get { return items; }
        set
        {
            items = value;
            OnPropertyChanged("Items");
        }
    }

    public ViewModel()
    {
        Items = new ObservableCollection<string>();
    }

    public event PropertyChangedEventHandler PropertyChanged;

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

<Window x:Class="YourNamespace.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Your Application" Height="450" Width="800">
    <Grid>
        <ListView ItemsSource="{Binding Items}">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding}" />
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>
    </Grid>
</Window>

using System.Windows;

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        DataContext = new ViewModel();
    }
}