private void btn_start_Click(object sender, EventArgs e)

        {

            //开始抽奖

            if (btn_start.Text == "停止")

            {

                timer1.Stop();

                btn_start.Text = "开始";



                //保存获奖信息

                SaveResult();

            }

            else

            {

                cjnum++;

                timer1.Start(); 

                

            }



        }



        private void SaveResult()

        {

            TGH.Lib.Log.WriteFile(Application.StartupPath + "\\choujiang.txt", "第" + cjnum.ToString() + "次抽奖数为:" + lbl_num.Text);

            lbl_result.Text += "第" + cjnum.ToString() + "次抽奖号码为:" + lbl_num.Text;// +"\r\n";

        }



        public int[] getRandomNum(int num, int minValue, int maxValue)

        {

            Random ra = new Random(unchecked((int)DateTime.Now.Ticks));

            arrNum = new int[num];

            int tmp = 0;

            for (int i = 0; i <= num - 1; i++)