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;using System.Threading;namespace yaojiangji{    public partial class Form1 : Form    {        List<Label> lbList = new List<Label>();        bool isCreate = false;        public Form1()        {            InitializeComponent();            Control.CheckForIllegalCrossThreadCalls = false;        }        private void btnStart_Click(object sender, EventArgs e)        {            if (isCreate)            {                isCreate = false;                this.btnStart.Text = "开始";            }            else            {                isCreate = true;                this.btnStart.Text = "结束";                //方法一：                /*                new Thread(                        ()=>                                                {                            Random random = new Random();                            while (isCreate)                            {                                for (int i = 0; i < 6; i++)                                {                                    lbList[i].Text = random.Next(1, 10).ToString();                                }                                Thread.Sleep(200);                            }                        }                    ).Start();                 */                //方法二：                Thread thread = new Thread(new ThreadStart(start));                //设置后台线程                thread.IsBackground = true;                thread.Start();                        }        }        private void Form1_Load(object sender, EventArgs e)        {            for (int i = 0; i < 6; i++)            {                Label label = new Label();                label.Text = i.ToString();                label.AutoSize = true;                label.Location = new Point(50*i+15,50);                lbList.Add(label);                this.Controls.Add(label);            }        }        public void start()        {            Random random = new Random();            while (isCreate)            {                for (int i = 0; i < 6; i++)                {                    lbList[i].Text = random.Next(1, 10).ToString();                }                Thread.Sleep(200);            }        }    }}