1新建wpf程序

2 新建Student类

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace WpfApp9
{public class Student:INotifyPropertyChanged{private string _Name = "";public string Name{get { return _Name; }set{_Name = value;OnPropertyChanged("Name");}}public event PropertyChangedEventHandler PropertyChanged;private void OnPropertyChanged(string propertyName){if (PropertyChanged != null){PropertyChanged(this, new PropertyChangedEventArgs(propertyName));}}}
}

 3.修改ui

<Window x:Class="WpfApp9.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:WpfApp9"mc:Ignorable="d"Title="MainWindow" Height="450" Width="800"><Grid><StackPanel><TextBox x:Name="textBoxName" Margin="5" BorderBrush="Black"/><Button Content="Modify Name" Margin="5" Click="Button_Click"></Button></StackPanel></Grid>
</Window>

4 主程序

using System;
using System.Collections.Generic;
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 WpfApp9
{/// <summary>/// MainWindow.xaml 的交互逻辑/// </summary>public partial class MainWindow : Window{Student student;public MainWindow(){InitializeComponent();student = new Student();//Binding binding = new Binding();//binding.Source = student;//binding.Path = new PropertyPath("Name");//BindingOperations.SetBinding(this.textBoxName, TextBox.TextProperty, binding);//可以简写成下面的样子this.textBoxName.SetBinding(TextBox.TextProperty,new Binding("Name"){ Source=student});}private void Button_Click(object sender, RoutedEventArgs e){student.Name += "Name";}}
}