wpf之TreeView

<Window x:Class="MyWpf.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
      xmlns:local="clr-namespace:MyWpf"
        mc:Ignorable="d" 
        Title="MainWindow" Height="296.042" Width="347.333">

    <Grid>
        <TreeView HorizontalAlignment="Left" Height="247" Margin="10,10,0,0" VerticalAlignment="Top" Width="135">
            <!--IsExpanded=true表示展开节点 -->
            <TreeViewItem Header="学生管理系统" IsExpanded="True">
                <!-- IsSelected是否被选中-->
                <TreeViewItem Header="系统管理系统" IsExpanded="True" IsSelected="True">
                    <TreeViewItem Header="角色管理系统" IsExpanded="True">
                    </TreeViewItem>
                </TreeViewItem>
            </TreeViewItem>

        </TreeView>

    </Grid>
</Window>

上面是静态简单生成一个树形结构

 结果：

 下面是一个非常简单的动态加载的树形：

<Window x:Class="MyWpf.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
      xmlns:local="clr-namespace:MyWpf"
        mc:Ignorable="d" 
        Title="MainWindow" Height="296.042" Width="347.333" Loaded="Window_Loaded">

    <Grid>
        <TreeView x:Name="tvList" HorizontalAlignment="Left"  MinHeight="247" Height="auto" Margin="10,10,0,0" VerticalAlignment="Top" Width="90">
            <!--IsExpanded=true表示展开节点 -->
           

        </TreeView>

    </Grid>
</Window>

后台代码：

    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent(); 
        }
        
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            //代码添加
            TreeViewItem ti = new TreeViewItem();
            ti.Header = "基础信息管理系统";
            //设置信息悬浮提示
            ti.ToolTip = ti.Header;
            tvList.Items.Add(ti);

            TreeViewItem ti1 = new TreeViewItem();
            ti1.Header = "用户管理系统";
            ti1.ToolTip = ti1.Header;
            ti.Items.Add(ti1);
            TreeViewItem ti2 = new TreeViewItem();
            ti2.Header = "角色管理系统";
            ti2.ToolTip = ti2.Header;
            ti.Items.Add(ti2);
        }
    }

 结果：

 下面是项目开发中通常用的，模型是自定义的：

<Window x:Class="MyWpf.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
      xmlns:local="clr-namespace:MyWpf"
        xmlns:model="clr-namespace:MyWpf"
        mc:Ignorable="d" 
        Title="MainWindow" Height="296.042" Width="347.333" Loaded="Window_Loaded">

    <Grid>
        <TreeView x:Name="tvList" HorizontalAlignment="Left"  MinHeight="247" Height="auto" Margin="10,10,0,0" VerticalAlignment="Top" Width="90"
                ItemsSource="{Binding TreeList}" ToolTip="sd" > 
            <TreeView.ItemTemplate>
                <!--DataType中使用情况的前提是引入了TreeViewTestModel模型，在这里是在上面通过 
                xmlns:model="clr-namespace:MyWpf引入的" -->
                <HierarchicalDataTemplate DataType="{x:Type model:TreeViewTestModel}"
                                          ItemsSource="{Binding Items}">
                    <!-- ToolTip加悬浮提示-->
                    <TextBlock Text="{Binding Name}" ToolTip="{Binding Name}"> 
                    </TextBlock>
                </HierarchicalDataTemplate> 
                
            </TreeView.ItemTemplate>

        </TreeView>

    </Grid>
</Window>

 后台：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace MyWpf
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            List<TreeViewTestModel> list = new List<TreeViewTestModel>();

            TreeViewTestModel tree = new TreeViewTestModel();
            tree.Id = "1"; 
            tree.Name = "系统01";
            tree.ToolTip = tree.Name;
            TreeViewTestModel tree2 = new TreeViewTestModel();
            tree2.Id = "2";
            tree2.Name = "系统02";
            tree2.ToolTip = tree2.Name;
            tree.Items.Add(tree2);

            TreeViewTestModel tree3 = new TreeViewTestModel();
            tree3.Id = "3";
            tree3.Name = "系统03";
            tree3.ToolTip = tree3.Name;
            tree.Items.Add(tree3);
            list.Add(tree);
            TLModel tL = new TLModel();
            tL.TreeList = list;
            this.DataContext = tL;
           
        }
    }

    public class TLModel
    {
        public List<TreeViewTestModel> TreeList
        {
            get; set;
        }
    }

    public class TreeViewTestModel 
    {
        public TreeViewTestModel()
        {
            Items = new List<TreeViewTestModel>();
        }
        public string Id { get; set; }

        public string ToolTip { get; set; }

        public string Name { get; set; }
        public List<TreeViewTestModel> Items { get; set; }
    }

 
}

WPF使用模板HierarchicalDataTemplate实现TreeView层次显示

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