WPF数据绑定实现自定义数据源

前台代码：

<Window x:Class="WpfApplication1.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">
    <Grid>
        <TextBox Height="23" Margin="10,10,9,0" Name="textBox1" VerticalAlignment="Top" />
        <TextBox Height="23" Margin="10,41,9,0" Name="textBox2" VerticalAlignment="Top" />
        <Slider Height="21" Margin="10,73,9,0" Name="slider1" VerticalAlignment="Top" Maximum="100" />
        <Button Content="Button" Height="40" HorizontalAlignment="Left" Margin="176,164,0,0" Name="button1" VerticalAlignment="Top" Width="156" Click="button1_Click" />
    </Grid>
</Window>

后台代码：

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 System.ComponentModel;

namespace WpfApplication1
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {

        Test test = new Test();

        public MainWindow()
        {
            InitializeComponent();
            Binding binding = new Binding();
            binding.Source = test;
            binding.Path = new PropertyPath("Id");
            this.textBox1.SetBinding(TextBox.TextProperty, binding);

        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            test.Id += 10;
        }
    }

    public class Test : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged; // 这个接口仅包含一个事件而已 

        private int id;
        public int Id
        {
            get { return id; }
            set
            {
                id = value;
                if (this.PropertyChanged != null)
                {

                    this.PropertyChanged.Invoke(this, new PropertyChangedEventArgs("Id")); // 通知Binding是“Id”这个属性的值改变了 
                }
            }
        }

        private int age;
        public int Age
        {
            get { return age; }
            set { age = value; } // Age的值改变时不进行通知 
        }
    }
}

代码功能：

该代码实现test 对象的Id属性与textBox1的text属性绑定；