WPF的ComboBox 数据模板自定义


WPF的ComboBox 有些时候不能满足用户需求,需要对数据内容和样式进行自定义,下面就简要介绍一下用数据模板(DataTemplate)的方式对ComboBox 内容进行定制:
原型设计如下:

步骤:
1、新建一个WPF应用程序WpfAppDemo(VS2012),并新建一个images文件夹(上传图片素材);
2、在主界面MainWindow.xaml文件中添加一个Label、ComboBox 和Button控件,如下图:

代码如下:

 1 <Window x:Class="WpfAppDemo.MainWindow"
 2  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 4  Title="MainWindow" Height="350" Width="525">
 5     <Grid>
 6         <ComboBox x:Name="myColorComBox" HorizontalAlignment="Left" Margin="110,79,0,0" VerticalAlignment="Top" Width="309" Height="48"  >
 7             <!--ItemTemplate-->
 8             <ComboBox.ItemTemplate>
 9                 <!--DataTemplate开始-->
10                 <DataTemplate>
11                     <Grid>
12                         <Grid.ColumnDefinitions>
13                             <ColumnDefinition Width="36"/>
14                             <ColumnDefinition Width="100*"/>
15                         </Grid.ColumnDefinitions>
16                         <Grid.RowDefinitions>
17                             <RowDefinition Height="50*"/>
18                             <RowDefinition Height="50*"/>
19                         </Grid.RowDefinitions>
20                         <!--绑定数据对象Image属性-->
21                         <Image Source="{Binding Image}" Width="32" Height="32" Margin="3,3,3,3" Grid.Row="0" Grid.Column="0" Grid.RowSpan="2" />
22                         <!--绑定数据对象Name属性-->
23                         <TextBlock Text="{Binding Name}" FontSize="12" Grid.Row="0" Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center"/>
24                         <!--绑定数据对象Desc属性-->
25                         <TextBlock Text="{Binding Desc}" FontSize="10" Grid.Row="1" Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center"/>
26                     </Grid>                    
27                 </DataTemplate>
28                 <!--DataTemplate结束-->
29             </ComboBox.ItemTemplate>
30         </ComboBox>
31         <Label Content="员工: " HorizontalAlignment="Left" Margin="66,92,0,0" VerticalAlignment="Top"/>
32         <Button Content="显示" HorizontalAlignment="Left" Margin="110,166,0,0" VerticalAlignment="Top" Width="75" Height="22" Click="Button_Click"/>
33 
34     </Grid>
35     
36 </Window>


3、在主界面MainWindow.xaml.cs文件中进行逻辑处理,代码如下:

 1 using System;  2 using System.Collections.Generic;  3 using System.Linq;  4 using System.Text;  5 using System.Threading.Tasks;  6 using System.Windows;  7 using System.Windows.Controls;  8 using System.Windows.Data;  9 using System.Windows.Documents; 10 using System.Windows.Input; 11 using System.Windows.Media; 12 using System.Windows.Media.Imaging; 13 using System.Windows.Navigation; 14 using System.Windows.Shapes; 15 
16 
17 namespace WpfAppDemo 18 { 19     /// <summary>
20     /// MainWindow.xaml 的交互逻辑 21     /// </summary>
22     public partial class MainWindow : Window 23  { 24         public MainWindow() 25  { 26  InitializeComponent(); 27             //初始化数据,并绑定
28  LodData(); 29  } 30 
31 
32         private void LodData() 33  { 34             IList<empoyee> customList = new List<empoyee>(); 35             //项目文件中新建一个images文件夹,并上传了001.png,002.png,003.png
36             customList.Add(new empoyee() { ID ="001", Name = "Jack" ,Image="images/001.png",Desc="this is good gay!"}); 37             customList.Add(new empoyee() { ID = "002", Name = "Smith", Image = "images/002.png", Desc = "this is great gay!" }); 38             customList.Add(new empoyee() { ID = "003", Name = "Json", Image = "images/003.png", Desc = "this is the bset gay!" }); 39 
40 
41             this.myColorComBox.ItemsSource = customList;//数据源绑定
42             this.myColorComBox.SelectedValue = customList[1];//默认选择项
43             
44  } 45 
46 
47         private void Button_Click(object sender, RoutedEventArgs e) 48  { 49             //显示选择的员工ID信息
50             MessageBox.Show((this.myColorComBox.SelectedItem as empoyee).ID); 51  } 52 
53 
54        
55 
56 
57  } 58     //定义员工类
59     public class empoyee 60  { 61         public string ID { get; set; } 62         public string Name { get; set; } 63         public string Image { get; set; } 64         public string Desc { get; set; } 65      
66  } 67 }

 

4、编译运行,如果运气不错的话,应该能看到如下的界面:


 


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