具体方案为：将ItermsSource设置为实现 INotifyCollectionChanged 接口的对象，以使集合的更改在 ItemsControl 中反映出来。
ObservableCollection<T> 类即定义这样的对象，不要贪图方便而使用List<T>。
请看Listbox 添加删除演示
XAML：
<UserControl x:Class="ListBoxDemo.MainPage"
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"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">
<Grid x:Name="LayoutRoot" Background="White">
<ListBox Height="200" Width="200" x:Name="listBox" ItemsSource="{Binding}" DisplayMemberPath="Name"></ListBox>
<Button Content="增加" Height="23" HorizontalAlignment="Left" Margin="11,270,0,0" Name="buttonAdd" VerticalAlignment="Top" Width="75" Click="buttonAdd_Click" />
<Button Content="删除" Height="23" HorizontalAlignment="Left" Margin="100,270,0,0" Name="buttonRemove" VerticalAlignment="Top" Width="75" Click="buttonRemove_Click" />
</Grid>
</UserControl>
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"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">
<Grid x:Name="LayoutRoot" Background="White">
<ListBox Height="200" Width="200" x:Name="listBox" ItemsSource="{Binding}" DisplayMemberPath="Name"></ListBox>
<Button Content="增加" Height="23" HorizontalAlignment="Left" Margin="11,270,0,0" Name="buttonAdd" VerticalAlignment="Top" Width="75" Click="buttonAdd_Click" />
<Button Content="删除" Height="23" HorizontalAlignment="Left" Margin="100,270,0,0" Name="buttonRemove" VerticalAlignment="Top" Width="75" Click="buttonRemove_Click" />
</Grid>
</UserControl>
CS：
using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Collections.ObjectModel;
namespace ListBoxDemo
{
public partial class MainPage : UserControl
{
public MainPage ()
{
InitializeComponent ();
BindingData ();
}
ObservableCollection<User> myUsers = new ObservableCollection<User> ();//数据源
private void BindingData ()
{
myUsers.Clear ();
myUsers.Add (new User ("A1", "A11"));
myUsers.Add (new User ("A2", "A12"));
myUsers.Add (new User ("A3", "A13"));
myUsers.Add (new User ("A4", "A14"));
myUsers.Add (new User ("A5", "A15"));
this.listBox.ItemsSource = myUsers;//绑定数据源
}
private void buttonAdd_Click (object sender, RoutedEventArgs e)
{
myUsers.Add (new User ("A" + (myUsers.Count + 1), "A1" + myUsers.Count + 1));
//this.listBox.ItemsSource = myUsers;
}
private void buttonRemove_Click (object sender, RoutedEventArgs e)
{
if (myUsers.Count > 0)
myUsers.RemoveAt (myUsers.Count - 1);
//this.listBox.ItemsSource = myUsers;
}
}
public class User
{
public User (string name, string address)
{
Name = name;
Address = address;
}
public string Name { get; set; }
public string Address { get; set; }
}
}
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Collections.ObjectModel;
namespace ListBoxDemo
{
public partial class MainPage : UserControl
{
public MainPage ()
{
InitializeComponent ();
BindingData ();
}
ObservableCollection<User> myUsers = new ObservableCollection<User> ();//数据源
private void BindingData ()
{
myUsers.Clear ();
myUsers.Add (new User ("A1", "A11"));
myUsers.Add (new User ("A2", "A12"));
myUsers.Add (new User ("A3", "A13"));
myUsers.Add (new User ("A4", "A14"));
myUsers.Add (new User ("A5", "A15"));
this.listBox.ItemsSource = myUsers;//绑定数据源
}
private void buttonAdd_Click (object sender, RoutedEventArgs e)
{
myUsers.Add (new User ("A" + (myUsers.Count + 1), "A1" + myUsers.Count + 1));
//this.listBox.ItemsSource = myUsers;
}
private void buttonRemove_Click (object sender, RoutedEventArgs e)
{
if (myUsers.Count > 0)
myUsers.RemoveAt (myUsers.Count - 1);
//this.listBox.ItemsSource = myUsers;
}
}
public class User
{
public User (string name, string address)
{
Name = name;
Address = address;
}
public string Name { get; set; }
public string Address { get; set; }
}
}