在窗体上显示倒计时隐藏窗体

 #region 倒计时
        private int leftTime = 10; 
        private void timer2_Tick(object sender, EventArgs e)
        {           
            if (currentEmployee != null && currentEmployee.IsEmployee)
            {
                this.lbInfo.Text = "您好！" + tmpEB.DeptName + " " + tmpEB.Name;
                TaskNotifier taskn = new TaskNotifier(currentEmployee);
                //this.Hide();
                //notifyIcon1.Visible = true;  
                if (leftTime >= 10)
                {
                    this.lbTimer.Text = "待办事宜提醒还有" + leftTime.ToString() + "秒将自动开启！";
                }
                else
                {
                    this.lbTimer.Text = "待办事宜提醒还有0" + leftTime.ToString() + "秒将自动开启！";
                }
                if (leftTime == 0)
                {
                    //倒计时到“00”，计时器停止 
                    this.timer2.Stop();
                    this.Hide();
                    notifyIcon1.Visible = true;
                }
                else
                {
                    leftTime--;
                }
            }
            else
            {
                this.Close();
            }           
        }
        #endregion