Window x:Class="模板选择器.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:local="clr-namespace:模板选择器"Title="MainWindow" Height="350" Width="525"><Window.Resources><local:MyDataTemplateSelector  x:Key="tmpdog"></local:MyDataTemplateSelector><DataTemplate x:Key="dta"><Border BorderThickness="2" BorderBrush="red" Background="GreenYellow"><StackPanel Orientation="Horizontal"><TextBlock Text="{Binding Name}"  Margin="10"></TextBlock><TextBlock Text="{Binding ID}" Margin="10"></TextBlock></StackPanel></Border></DataTemplate><DataTemplate x:Key="dtb" DataType="ListBox"><Border BorderThickness="1" BorderBrush="Blue" Background="LightBlue" Padding="5" ><StackPanel Orientation="Horizontal"><TextBlock Text="{Binding Name}"  Margin="10"></TextBlock><TextBlock Text="{Binding ID}" Margin="10"></TextBlock></StackPanel></Border></DataTemplate></Window.Resources><Grid><Grid.RowDefinitions><RowDefinition Height="*"></RowDefinition><RowDefinition Height="Auto"></RowDefinition></Grid.RowDefinitions><ListBox  Name="listbox" ItemTemplateSelector="{StaticResource tmpdog}"></ListBox><Button  Grid.Row="1" Width="75" Height="23" Click="Button_Click">确定</Button></Grid>
</Window>

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.Navigation;
using System.Windows.Shapes;namespace 模板选择器
{/// <summary>/// MainWindow.xaml 的交互逻辑/// </summary>public partial class MainWindow : Window{public MainWindow(){InitializeComponent();InitData();listbox.ItemsSource = list;            }public List<Student> list { get; set; }public void InitData(){Random r = new Random();list = new List<Student>();for (int i = 0; i < 15; i++){list.Add(new Student{Name = "dog" + i,ID = r.Next(100)});}}int i = 0;private void Button_Click(object sender, RoutedEventArgs e){if (i%2==0){listbox.SetResourceReference(ListBox.ItemTemplateProperty, "dta");}else{listbox.SetResourceReference(ListBox.ItemTemplateProperty, "dtb");}i++;}}public class Student{public int ID{set;get;}public string Name{set;get;}}public class MyDataTemplateSelector : DataTemplateSelector{public override DataTemplate SelectTemplate(object item, DependencyObject container){var fe = container as FrameworkElement;var obj = item as Student;DataTemplate dt = null;if (obj != null && fe != null){if (obj.ID > 30){dt = fe.FindResource("dta") as DataTemplate;}                    else{dt = fe.FindResource("dtb") as DataTemplate;}                    }return dt;}}
}