本文主要说明控件绑定类的属性。比如表格绑定对象,当对象更新的时候,表格内容同步更新。
无需再写多余的代码。
对应的类必须是实现接口: INotifyPropertyChanged ,对应属性是 public
类代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.ComponentModel;
namespace 绑定非元素对象
{
public class TMyData : INotifyPropertyChanged
{
private string m_StuName = string.Empty;
public TMyData(string A_StuName)
{
this.m_StuName = A_StuName;
}
//public string? Name { get; set; }
public string StuName
{
get
{
return m_StuName;
}
set
{
if (value!= m_StuName)
{
m_StuName = value;
Nofity("StuName");
}
}
}
public event PropertyChangedEventHandler? PropertyChanged;
private void Nofity(string property)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(property));
}
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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 绑定非元素对象
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
private TMyData myData;
public MainWindow()
{
InitializeComponent();
myData = new TMyData("chenzhigang");
this.DataContext = myData; //指定 DataContext
}
private void btnSetName_Click(object sender, RoutedEventArgs e)
{
myData.StuName = TextSetName.Text;
}
}
}
页面布局代码:
<Window x:Class="绑定非元素对象.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:绑定非元素对象"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<StackPanel>
<Label>姓名同步</Label>
<TextBox Text="{Binding Path=StuName}"></TextBox>
<Label>请输入姓名</Label>
<TextBox Name="TextSetName"></TextBox>
<Button Name="btnSetName" Click="btnSetName_Click">设置姓名</Button>
</StackPanel>
</Window>