protected void Session_Start(Object sender, EventArgs e) { if (Request.IsAuthenticated) { Session["date"] = String.Format("{0:dd/MM/yyyy}", DateTime.Today.Date); TDKTEntities td = new TDKTEntities(); if (Session["year"] == null) { HttpContext.Current.Session.Add("year", td.getYear().FirstOrDefault().ToString()); } if (User.IsInRole("Theo dõi đơn vị")) { Session["donvi"] = td.getMaDonvi(User.Identity.GetUserId().ToString()).FirstOrDefault().ToString(); } else { Session["donvi"] = null; } } }