Cacher is the code snippet organizer for pro developers

//一个Button和textbox1
  private void button1_Click(object sender, EventArgs e)
  {
      Form2 t = new Form2();
      //给窗体二EvnSend注册(注册事件为窗体二委托(委托实例化:指向本窗体t_send))
      t.EvnSend += new Form2.send(t_send);
      t.Show();
  }
//为了证明不是调用,设为私有
 private void t_send(string mess)
  {
      textBox1.Text = mess;
  }

  public delegate void send(string mess);//声明一个委托
  public event send EvnSend;//声明一个事件指向委托
  //在窗体启动中为该事件注册为Form1.textBox1赋值
  private void button1_Click(object sender, EventArgs e)
  {
    EvnSend(textBox1.Text);//事件调用
  }