WPF中将Dictionary<T,T>类型做为数据源绑定到TreeView上

一、后台源码

using System.Collections.ObjectModel;
namespace WpfTreeView
{
    public partial class MainWindow : Window
    {
        Dictionary<string, Node> mDicList;
        public MainWindow()
        {
            InitializeComponent();
            mDicList = new Dictionary<string, Node>();
        }
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            for (int i = 0; i < 10; i++)
            {
                Node node = new Node(i.ToString(), "node" + i);
                mDicList.Add(i.ToString(), node);
                for (int j = 0; j < 5; j++)
                {
                    Node childNode = new Node(j.ToString(), "subNode" + j);
                    node.Children.Add(childNode);
                    for (int k = 0; k < 5; k++)
                    {
                        Node grandSonNode = new Node(k.ToString(), "grandSon" + k);
                        childNode.Children.Add(grandSonNode);
                    }
                }
            }
            treeView1.ItemsSource = mDicList;
        }
    }

    public class Node
    {
        public Node(string id, string desc)
        {
            this.id = id;
            this.desc = desc;
        }
        private string id;
        public string ID
        {
            get { return id; }
            set { id = value; }
        }
        private string desc;
        public string Desc
        {
            get { return desc; }
            set { desc = value; }
        }
        private ObservableCollection<Node> children = new ObservableCollection<Node>();
        public ObservableCollection<Node> Children
        {
            get { return children; }
            set { children = value; }
        }
    }
}
二、Xaml

<Window x:Class="WpfTreeView.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:WpfTreeView"
        Title="MainWindow" Height="646" Width="1058" Loaded="Window_Loaded">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="302*" />
            <ColumnDefinition Width="10*" />
            <ColumnDefinition Width="724*" />
        </Grid.ColumnDefinitions>
        <GridSplitter Grid.Column="1" Grid.ColumnSpan="1" HorizontalAlignment="Stretch" Name="gridSplitter1" VerticalAlignment="Stretch" Width="10" />
        <TreeView HorizontalAlignment="Stretch" Name="treeView1" VerticalAlignment="Stretch" Background="#FFADABAB">
            <TreeView.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding Value.Children}">
                    <TextBlock  Text="{Binding Value.Desc}"/>
                    <HierarchicalDataTemplate.ItemTemplate>
                        <HierarchicalDataTemplate ItemsSource="{Binding Children}">
                            <TextBlock Text="{Binding Desc}"/>
                        </HierarchicalDataTemplate>
                    </HierarchicalDataTemplate.ItemTemplate>
                </HierarchicalDataTemplate>
            </TreeView.ItemTemplate>
        </TreeView>
    </Grid>
</Window>

三、效果图

四、说明

treeView1.ItemsSource = mDicList;必须放在为mDicList添加元素之后，否则无法显示。一级节点对应的数据类型是KeyValuePair<string,Node>，子节点或孙子节点类型则是Node。