您当前的位置: INotifyPropertyChanged一般在数据绑定的时候使用。
InotifyPropertyChanged是.net内置的接口，数据绑定时会检测DataContext是否实现了InotifyPropertyChanged，如果实现了，就会监听PropertyChanged，得知属性变化。
可以理解为InotifyPropertyChanged接口用于向客户端发出某一属性值已更改的通知。
类
class Person:INotifyPropertyChanged { private int age; public int Age { get { return age; } set { this.age = value; if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs("Age")); } } } public event PropertyChangedEventHandler PropertyChanged; }
.cs文件
public partial class MainWindow : Window { private Person p = new Person(); public MainWindow() { InitializeComponent(); } private void Button_Click(object sender, RoutedEventArgs e) { p.Age++; } private void Window_Loaded(object sender, RoutedEventArgs e) { p.Age = 10; txtAge.DataContext = p; } }
xaml文件
<TextBox Name="txtAge" HorizontalAlignment="Left" Height="23" Margin="82,39,0,0" TextWrapping="Wrap" Text="{Binding Age}" VerticalAlignment="Top" Width="120"/> <Button Content="Age++" HorizontalAlignment="Left" Margin="271,39,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click"/>
这样点击button可以实现textbox里的数字自增。