using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.CompilerServices;
namespace WindowsFormsApplication1
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
Test test;
private void Form2_Load(object sender, EventArgs e)
{
test=new Test();
label1.DataBindings.Add("Text", test, "Str");
label2.DataBindings.Add("Text", test, "Str");
label3.DataBindings.Add("Text", test, "Str");
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
test.Str = textBox1.Text;
}
}
//要使用绑定数据功能，需要模型支持INotifyPropertyChanged接口
public class Test : INotifyPropertyChanged
{
string _str;
public string Str
{
get
{
return _str;
}
set
{
_str = value;
FireStrChanged();
}
}
//必须实现INotifyPropertyChanged接口的此事件
public event PropertyChangedEventHandler PropertyChanged;
//要在.net4.0使用CallerMemberName特性，需要加上后面一段代码
public void FireStrChanged([CallerMemberName] string propertyName="")
{
PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
}
namespace System.Runtime.CompilerServices
{
[AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
public class CallerMemberNameAttribute : Attribute
{
}
[AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
public class CallerFilePathAttribute : Attribute
{
}
[AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
public class CallerLineNumberAttribute : Attribute
{
}
}
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版权声明：本文为CSDN博主「naruto2017」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/szy759590387/article/details/89516163
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