ASP.NET

public delegate void del_time();

 public Thread threadTime;
 public int time = 60;
 protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                labelTime.Text = "TIME 60";
                threadTime = new Thread(new ThreadStart(Display_Time));
                threadTime.IsBackground = true;
                threadTime.Start();
            }
        }
 
   protected void Dsiplay_Time()
        {
            del_time del1 = new del_time(Lbl_time);
            Thread.Sleep(1000);
            while (true)
               invoke(Lbl_time, new object[] { });
        }

        protected void Lbl_timp()
        {
            if (time > 0)
            {
                time -= 1;
                labelTime.Text = "TIME " + time.ToString();
            }
            else
            {
                time = 60;
                labelTime.Text = "TIME " + time.ToString();
            }
        }