如何使用MVVM模式从数据库填充ListView？

// 数据模型
public class ItemModel
{
    public string Name { get; set; }
    public int Quantity { get; set; }
}

// 视图模型
public class ItemViewModel : INotifyPropertyChanged
{
    private ObservableCollection<ItemModel> items;

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

    public event PropertyChangedEventHandler PropertyChanged;

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

    public void LoadDataFromDatabase()
    {
        // 从数据库中获取数据，并填充到Items集合中
        // 示例代码仅为演示，实际应使用合适的数据库访问技术
        Items = new ObservableCollection<ItemModel>
        {
            new ItemModel { Name = "Item 1", Quantity = 10 },
            new ItemModel { Name = "Item 2", Quantity = 5 },
            new ItemModel { Name = "Item 3", Quantity = 8 }
        };
    }
}

// 视图
public partial class MainWindow : Window
{
    private ItemViewModel viewModel;

    public MainWindow()
    {
        InitializeComponent();
        viewModel = new ItemViewModel();
        DataContext = viewModel;
    }

    private void Window_Loaded(object sender, RoutedEventArgs e)
    {
        viewModel.LoadDataFromDatabase();
    }
}