在TreeView WPF中显示分层数据

<Window x:Class="TreeViewExample.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="TreeView Example" Height="450" Width="300">
    <Grid>
        <TreeView x:Name="treeView">
            <TreeView.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding Children}">
                    <TextBlock Text="{Binding Name}" />
                </HierarchicalDataTemplate>
            </TreeView.ItemTemplate>
        </TreeView>
    </Grid>
</Window>

using System.Collections.ObjectModel;
using System.Windows;

namespace TreeViewExample
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            // 创建数据源
            var root = new Node { Name = "Root" };
            var child1 = new Node { Name = "Child 1" };
            var child2 = new Node { Name = "Child 2" };
            var grandchild1 = new Node { Name = "Grandchild 1" };
            var grandchild2 = new Node { Name = "Grandchild 2" };

            root.Children.Add(child1);
            root.Children.Add(child2);
            child1.Children.Add(grandchild1);
            child2.Children.Add(grandchild2);

            // 设置数据源
            treeView.ItemsSource = new ObservableCollection<Node> { root };
        }
    }

    public class Node
    {
        public string Name { get; set; }
        public ObservableCollection<Node> Children { get; } = new ObservableCollection<Node>();
    }
}