WPF 双向绑定

定义类： 类实现INotifyPropertyChanged 接口

using Microsoft.Win32;
using System.ComponentModel;
using System.Windows;

namespace WPFEntity
{
    public class Person : INotifyPropertyChanged
    {
        private int age;

        public event PropertyChangedEventHandler PropertyChanged;

        public int Age
        {
            get { return this.age; }
            set
            {
                this.age = value;
                if (this.PropertyChanged != null)
                {
                    this.PropertyChanged(this, new PropertyChangedEventArgs("Age"));
                }
            }
        }

        public string Name { get; set; }
    }
}

.cs文件绑定：

public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            this.Loaded += MainWindow_Loaded;
            btnAddAge.Click += btnAddAge_Click;
        }

        Person person = new Person();

        void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            person.Name = "Nelson";
            person.Age = 24;
            grid1.DataContext = person;
        }

        void btnAddAge_Click(object sender, RoutedEventArgs e)
        {
            person.Age++;
        }
    }

XAML代码：

<TextBox Name="txtName" Text="{Binding Name}" HorizontalAlignment="Left" Height="23" Margin="83,74,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120"/>
<TextBox Name="txtAge" Text="{Binding Age}" HorizontalAlignment="Left" Height="23" Margin="83,131,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120"/>
<Button Name="btnAddAge" Content="Age增加" HorizontalAlignment="Left" Margin="274,75,0,0" VerticalAlignment="Top" Width="75"/>