WINFORM窗体间的传值实现解析

//代理声明
public delegate void SendMessage(string str);
//事件声明
public event SendMessage SendEvent;
private void btnSend_Click(object sender, EventArgs e)
{
    //调用事件
   SendEvent(textBox1.Text);
}

private void btnShow_Click(object sender, EventArgs e)
{
    Form2 f2 = new Form2();
    //Form2事件注册
    f2.SendEvent+=new Form2.SendMessage(GetMessage);
    f2.Show();
}
//代理调用的方法
public void GetMessage(string str)
{
    textBox1.Text = str;
}