WPF—— ListBox的使用

<Window x:Class="ListBox的使用.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded">
    <Grid Name="grid1">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="48*" />
            <ColumnDefinition Width="455*" />
        </Grid.ColumnDefinitions>
        <!--因为listBox的数据源是一个Person类对象的集合，DisplayMemberPath="Name"listBox控件要显示行的内容为Person对象的Name属性值，SelectedValuePath="Age"表示获选中行的值的时候获取到的是Age的值-->
        <ListBox DisplayMemberPath="Name" SelectedValuePath="Age"  Height="100" HorizontalAlignment="Left" Margin="62,78,0,0" Name="listBox1" VerticalAlignment="Top" Width="120" Grid.Column="1">
            <ListBox.Items>
                <!--<ListBoxItem Content="湖南"></ListBoxItem>-->
                <!--<ListBoxItem Content="广东"></ListBoxItem>-->
                <!--<ListBoxItem Content="四川"></ListBoxItem>-->
                <!--<Button Content="北京"></Button>-->
                <!--<ListBoxItem Content="{Binding Name}"></ListBoxItem>-->
                <!--<ListBoxItem Content="{Binding Age}"></ListBoxItem>-->
                <!--<ListBoxItem Content="{Binding Height}"></ListBoxItem>-->
               
            </ListBox.Items>
        </ListBox>
        <Button Content="获得listBox选中行的值" Grid.Column="1" Height="23" HorizontalAlignment="Left" Margin="62,37,0,0" Name="button1" VerticalAlignment="Top" Width="132" Click="button1_Click" />
        <TextBox Grid.Column="1" Height="23" HorizontalAlignment="Right" Margin="0,37,135,0" Name="txtListBoxSelectedValue" VerticalAlignment="Top" Width="120" />
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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;
using Model;

namespace ListBox的使用
{
    /// <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<Person> list = new List<Person>();
            Person p1 = new Person();
            p1.Name = "杨中科";
            p1.Age = 38;
            p1.Height = 172;
            list.Add(p1);

            //list.Add(new Person(Name = "毛泽东", Age = 76, Height = 184));
            Person p2 = new Person();
            p2.Name = "周恩来";
            p2.Age = 72;
            p2.Height = 178;
            list.Add(p2);

            
            //这个list里面总共放了有两个Person对象
            listBox1.ItemsSource = list;
            //因为listBox1控件是绑定Person类的对象集合的。所以我们得让listBox1显示
            //Person类对象的某一个属性的值，下面的设置就是让listBox1控件显示Person
            //类对象的Name属性值。如果不设的话就会显示为Person类的名字
            listBox1.DisplayMemberPath = "Name";

            //因为listBox1可以有很多行，一行就是一个Person对象，那么当我选中其中一行的时候，也就是说选中一个对象
            //那么现在我要用SelectedValue获得选中这一行的值，可是这一行是一个对象，我应该怎么取呢？于是下面的设置就是“当选中一行的时候，我所取到的值设定为Person类对象的Age属性的值”
            listBox1.SelectedValuePath = "Age";

            
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            //SelectedItem获得的是选中行的对应的对象。如果没有选中行就是null
            Person selectedItem = listBox1.SelectedItem as Person;

            //SelectedValue获得的是选中行对应的对象的“SelectedValuePath="Age"标示的属性”的属性值即Age的值
            int  selectedValue =(int) listBox1.SelectedValue;
            txtListBoxSelectedValue.Text = selectedValue.ToString();
            
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Model
{
    public class Person
    {
        public string Name { get; set; }

        public int Age { get; set; }

        public int Height { get; set; }
        
    }
}