delegate委托的例子，实现对Form中控件的更新

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

namespace Invoketest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public void UpdateForm(string param1, string parm2)
        {
            this.textBox1.Text = param1 + parm2;
        }

        public delegate void UpdateForm_dl(string str1, string str2);

        private void Calldelegate()
        {

            /*在Windows窗体应用程序中使用this.Invoke    在WPF应用程序中使用this.Dispatcher.Invoke*/

            this.BeginInvoke(new UpdateForm_dl(UpdateForm), new object[] { "我是文本框", "haha" });

            //this.Dispatcher.BeginInvoke(new UpdateForm_dl(UpdateForm), new object[] { "我是文本框", "haha" });

        }

        public void DoWork()
        {
            Calldelegate();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            Thread thread = new Thread(new ThreadStart(DoWork));
            thread.Start();
        }
    }
}