如何在treeview wpf上使用INotifyPropertyChanged

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

    public event PropertyChangedEventHandler PropertyChanged;

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

<TreeView x:Name="treeView">
    <TreeView.ItemTemplate>
        <HierarchicalDataTemplate ItemsSource="{Binding Children}">
            <TextBlock Text="{Binding Name}" />
        </HierarchicalDataTemplate>
    </TreeView.ItemTemplate>
</TreeView>

public MainWindow()
{
    InitializeComponent();

    TreeNode root = new TreeNode() { Name = "Root" };
    TreeNode child1 = new TreeNode() { Name = "Child 1" };
    TreeNode child2 = new TreeNode() { Name = "Child 2" };
    root.Children.Add(child1);
    root.Children.Add(child2);

    treeView.ItemsSource = new List<TreeNode>() { root };
}

private void UpdateNodeName()
{
    TreeNode selectedNode = treeView.SelectedItem as TreeNode;
    if (selectedNode != null)
    {
        selectedNode.Name = "New Name";
    }
}