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 = ;
txtAge.DataContext = p;
}
}
xaml文件
<TextBox Name="txtAge" HorizontalAlignment="Left" Height="" Margin="82,39,0,0" TextWrapping="Wrap" Text="{Binding Age}" VerticalAlignment="Top" Width=""/>
<Button Content="Age++" HorizontalAlignment="Left" Margin="271,39,0,0" VerticalAlignment="Top" Width="" Click="Button_Click"/>
这样点击button可以实现textbox里的数字自增。