using System;
using System.Collections.Generic;
using System.ComponentModel;
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 WpfApplication2
{
    /// <summary>
    /// MainWindow.xaml 的互動邏輯
    /// </summary>
    public partial class MainWindow : Window
    {
        Student stu;

        public MainWindow()
        {
            InitializeComponent();

            // 準備資料來源
            stu = new Student()
            {
                Name = "小明"
            };

            // 準備Binding
            Binding binding = new Binding()
            {
                Source = stu// 資料來源
                ,
                Path = new PropertyPath("Name")// 需繫結的資料來源屬性名
                ,
                Mode = BindingMode.TwoWay// 繫結模式
                ,
                UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
            };

            // 連線資料來源與繫結目標
            BindingOperations.SetBinding(
                txt// 需繫結的控制元件
                ,
                TextBox.TextProperty// 需繫結的控制元件屬性
                ,
                binding);

            // 簡寫
            //txt.SetBinding(TextBox.TextProperty, new Binding("Name")
            //{
            //    Source = stu,
            //    Mode = BindingMode.TwoWay
            //});
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show(stu.Name);
        }
    }

    public class Student : INotifyPropertyChanged
    {
        private string name;
        public string Name
        {
            get
            {
                return name;
            }
            set
            {
                name = value;
                if (PropertyChanged != null)
                {
                    PropertyChanged(this, new PropertyChangedEventArgs("Name"));
                }
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
    }
}