protected void Page_Load(object sender, EventArgs e) { long id = 0; if (!string.IsNullOrEmpty(Request.QueryString["id"]) && long.TryParse(Request.QueryString["id"], out id)) { sla = bll.GetSlaById(id); } if (sla != null) { itemList = bll.GetSLAItem(sla.id); hoursList = bll.GetWorkHourList(sla.id); isAdd = false; } }