protected void Timer1_Tick(object sender, EventArgs e)    {        string id = ViewState["mobileid"].ToString();        if (!string.IsNullOrEmpty(id))        {            DataTable dtGps = GBLL.GetList(" imei = '" + id + "' order by intime desc ").Tables[0];            if (dtGps.Rows.Count > 0)            {                string lat  = dtGps.Rows[0]["lat"].ToString();                string lon = dtGps.Rows[0]["lon"].ToString();                hdflog.Value = lon;                hdflag.Value = lat;            }        }    }    protected void timersWatch_Click(object sender, EventArgs e)    {        Timer1.Interval = 10 * 1000;//10秒 开启计时器    }