c#窗体传志

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public delegate void ces(string a);
    public partial class Form2 : Form
    {
        ces bbb;
        public Form2(ces aax)
        {
            bbb = aax;
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            bbb(this.textBox1.Text);
        }
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        private string text;

        
        public Form1()
        {
            InitializeComponent();
            
        }

        public Form1(string text)
        {
            // TODO: Complete member initialization
            this.text = text;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form2 f = new Form2(setmsg);
            f.ShowDialog();
            
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
        public void setmsg(string msg) 
        {
            this.label1.Text = msg;
        }
    }
}