如何使用INotifyPropertyChanged更新数组绑定？

public class MainViewModel : INotifyPropertyChanged
{
    private string _name;
    public string Name
    {
        get { return _name; }
        set
        {
            if (_name == value)
            {
                return;
            }
            _name = value;
            OnPropertyChanged();
        }
    }

    private ObservableCollection<int> _data;
    public ObservableCollection<int> Data
    {
        get { return _data; }
        set
        {
            if (_data == value)
            {
                return;
            }
            _data = value;
            OnPropertyChanged();
        }
    }

    public MainViewModel()
    {
        _name = "";
        _data = new ObservableCollection<int>();
        _data.Add(1);
        _data.Add(2);
        _data.Add(3);
    }

    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }

    public event PropertyChangedEventHandler PropertyChanged;
}

private void OnPropertyChanged(string propertyName)
{
    if (PropertyChanged != null)
    {
        PropertyChangedEventArgs e = new PropertyChangedEventArgs(propertyName);
        PropertyChanged(this, e);
    }
}