WPF---数据绑定之ItemsControl（三）
2024-09-20 08:09:44
一、Combox绑定
场景：定义多个Person，Person有Name和Age属性，将多个Person与Combox进行绑定，Combox中只显示Name信息，点击任意一个item，在左侧显示该条目的详细信息。
参考代码以下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data; namespace BindingDemo2
{
public partial class MainWindow : Window
{
private List<Person> personList = new List<Person>();
public MainWindow()
{
InitializeComponent();
personList.Add(new Person() {Name = "Mary",Age = 18 });
personList.Add(new Person() { Name = "Tom", Age = 15 });
personList.Add(new Person() { Name = "Jack", Age = 28 });
personList.Add(new Person() { Name = "Jim", Age = 38 });
cmbPerson.ItemsSource = personList;
}
}
public class Person : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged; if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
private int _age = 18; public int Age
{
get { return _age; }
set
{
_age = value;
OnPropertyChanged("Age");
}
} private string _name = "Mary"; public string Name
{
get { return _name; }
set
{
_name = value;
OnPropertyChanged("Name");
}
}
public Person()
{
Age = 18;
Name = "Mary";
} }
}
<Window x:Class="BindingDemo2.MainWindow"
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"
xmlns:local="clr-namespace:BindingDemo2"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525" Name="win">
<Grid ShowGridLines="True">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<StackPanel>
<Label Content="Target"/>
<Label Content="Name"/>
<Label Content="{Binding SelectedItem.Name,ElementName=cmbPerson}" Height="30" Background="AliceBlue" Name="lbName"/>
<Label Content="Age"/>
<Label Height="30" Background="AliceBlue" Name="lbAge" Content="{Binding SelectedItem.Age, ElementName=cmbPerson}"/>
</StackPanel>
<StackPanel Grid.Column="1">
<ComboBox Name="cmbPerson" ItemsSource="{Binding}" DisplayMemberPath="Name" SelectedIndex="0">
</ComboBox>
</StackPanel>
</Grid>
</Window>
运行结果如下：
我们也可以利用DataContext属性来简化前台绑定，参考代码以下：
<Window x:Class="BindingDemo2.MainWindow"
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"
xmlns:local="clr-namespace:BindingDemo2"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525" Name="win">
<Grid ShowGridLines="True">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<StackPanel DataContext="{Binding ElementName=cmbPerson, Path=SelectedItem}">
<Label Content="Target"/>
<Label Content="Name"/>
<Label Content="{Binding Name}" Height="30" Background="AliceBlue" Name="lbName"/>
<Label Content="Age"/>
<Label Height="30" Background="AliceBlue" Name="lbAge" Content="{Binding Age}"/>
</StackPanel>
<StackPanel Grid.Column="1">
<ComboBox Name="cmbPerson" ItemsSource="{Binding}" DisplayMemberPath="Name" SelectedIndex="0">
</ComboBox>
</StackPanel>
</Grid>
</Window>
最新文章
- Linux操作系统启动流程梳理
- stm32软件模拟IIC读取PX4FLOW光流传感器数据
- WdatePicker 设置日期第一个比第二个的日期小
- ssh中getHibernateTemplate()的方法
- 对LVS DR模式的理解
- 用document.getElementsByTagName()返回的真的是数组吗？
- wildcard
- javascript笔记整理（流程控制）
- 基于docker+reveal.js搭建一个属于自己的在线ppt网站
- MySQL分类表设计--根据ID删除全部子类
- 一些常用的api接口、
- Beta 冲刺day3
- Django rest framework源码分析（2）----权限
- 处理Word文档中所有修订
- C# GDI+编程之Graphics类
- Vue单页面应用
- Python——eventlet
- 关于struts.xml配置文件的说明
- mac下framework联编需要设置的
- Qt中QScrollArea类的简单使用心得