label&textbox(简单绑定).txt

C# 是创新性的新式编程语言

1.控件名称	label1/textBox2
2.控件属性名称	"Text"
3.对象		comboBox1.DataSource
4.列		"Country"
5.行		(行通过借助comboBox.DataSource指定)


		private void button1_Click(object sender, System.EventArgs e)
		{
			al.Add(new Person("China",0));
			al.Add(new Person("USA",1));
			al.Add(new Person("Japan",2));
			this.comboBox1.DataSource=al;
			this.comboBox1.DisplayMember="Country";
			this.comboBox1.ValueMember="Code";

			//简单绑定(关键)
			this.label1.DataBindings.Add("Text",comboBox1.DataSource,"Country");
			this.textBox2.DataBindings.Add("Text",comboBox1.DataSource,"Country");
		}

对于不是字符串型的:整数,时间需要响应格式化事件

txtTarget.DataBindings[0].Format+=new ConvertEventHandler(this.Data_Format);

private void Date_Format(object sender,ConvertEventArgs e)
{
	e.value=e.Value.ToString("d");
}

解除绑定
private void Unbind()
{
	comboBox1.DataBindings.Clear();
	comboBox1.Text=String.Empty;
	comboBox1.DataSource=null;
}