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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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.Shapes;
using System.Collections.ObjectModel;
using System.ComponentModel;
namespace WpfApplication1
{
public partial class WindowObservable : Window
{
ObservableCollection<Students> infos = new ObservableCollection<Students>() {
new Students(){ Id=1, Age=11, Name="Tom"},
new Students(){ Id=2, Age=12, Name="Darren"},
new Students(){ Id=3, Age=13, Name="Jacky"},
new Students(){ Id=4, Age=14, Name="Andy"}
};
public WindowObservable()
{
InitializeComponent();
this.lbStudent.ItemsSource = infos;
this.txtStudentId.SetBinding(TextBox.TextProperty, new Binding("SelectedItem.Id") { Source = lbStudent });
}
private void button1_Click(object sender, RoutedEventArgs e)
{
infos[1] = new Students() { Id = 4, Age = 14, Name = "这是一个集合改变" };
infos[2].Name = "这是一个属性改变";
}
public class Students
{
public int Id { get; set; }
public string Name { get; set; }
public int Age { get; set; }
}
}
}
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在这个例子中我们将Students数据对象用ObservableCollection<T>来修饰。这样当我们点击click的时候我们看到。当我们点击后只有student整个对象的改变引发了后台通知机制。