我想在窗体中添加倒计时,
 private void timer1_Tick(object sender, EventArgs e)
        {
            int time = 60;
            int i = 59;
            if (time >= 0 && i >= 0)
            {
                time--;
                fen.Text = i.ToString();
                if (time >= 10)
                {
                    miao.Text = time.ToString();
                }
                else if (time < 10 && time >= 0)
                {
                    miao.Text = "0" + time.ToString();
                }
                else
                {
                    i--;
                    time = 60;
                }
            }
        }可是程序运行后,只显示”59:59“,然后就不动了,是怎么回事啊?