例子 : 点击form1上的按钮打开form2窗口,在form2窗体中的文本框中输入一个值后,在点击form2窗体中按钮,在form2中的文本框中输入的值也会在form1中的文本框中出现。
form1:
public partial class Form1 : Form
{
public Form1() { InitializeComponent(); }private void textBox1_TextChanged(object sender, EventArgs e)
{}
private void button1_Click(object sender, EventArgs e)
{ Form2 frm = new Form2(); frm.Text_event += new Form2.Text_delegate(getData); frm.ShowDialog(); }public void getData()
{ textBox1.Text = Form2.x; } }form2:
public partial class Form2 : Form
{ public Form2() { InitializeComponent(); }
private void Form2_Load(object sender, EventArgs e)
{}
public delegate void Text_delegate();
public event Text_delegate Text_event; public static string x;public void Tram()
{ x = textBox1.Text; if (Text_event != null) Text_event(); } private void textBox1_TextChanged(object sender, EventArgs e) {}
private void button1_Click(object sender, EventArgs e)
{ if (!String.IsNullOrEmpty(this.textBox1.Text)) { Tram(); } } }