//Load public int LoadKhaoSat() { List<KHAOSAT> lt = new List<KHAOSAT>(); BUSKhaoSat BUSKhaoSat = new BUSKhaoSat(); lt = BUSKhaoSat.SelectKHAOSATsAll(); if (lt.Count > 0) { this.GridViewKhaoSat.DataSource = lt; GridViewKhaoSat.DataBind(); PanelDanhSach.Visible = true; PanelMessage.Visible = false; return lt.Count; } else { PanelDanhSach.Visible = false; PanelMessage.Visible = true; return 0; } }