winform 窗体之间传值的问题

Question

form1:public void yytfuzhi(int a)
        {
            this.txtyyt.Text = a.ToString();
        }form2: private void button1_Click(object sender, EventArgs e)
        {
                int id = 0;
                form1 ind = new form1();
                ind.yytfuzhi(id);
            
        }我想把Form2的id传到Form1中，并在txtyyt上显示出来，但是出错了，他说我的txtyyt控件未实例化，求解

Answer 1

http://topic.csdn.net/u/20110407/19/c1068d69-7331-4d02-bc0b-f5ba7a5f8dd8.html?75505

Answer 2

cao版主引以为荣的委托例子,你竟然说看不懂?
打你pp

Answer 3

form1:
private void button1_Click(object sender, System.EventArgs e)
        {
            Form2 frm = new Form2();
            frm.OnSendString += (text) => { textBox1.Text = text; };
            frm.Show();
        }form2:
        public delegate void SendStringHandler(String text);
        public event SendStringHandler OnSendString;        private void button1_Click(object sender, EventArgs e)
        {
            if (OnSendString != null)
            {
                OnSendString("在WinForms程序里实现窗体传值的最佳实践");
            }
        }