//Load public int LoadLoaiBaiViet() { List<LOAIBAIVIET_getall_chitietResult> lt = new List<LOAIBAIVIET_getall_chitietResult>(); BUSLoaiBaiViet BUSLoaiBaiViet = new BUSLoaiBaiViet(); lt = BUSLoaiBaiViet.SelectLOAIBAIVIETsAll_chitiet(); if (lt.Count > 0) { this.GridViewLoaiBaiViet.DataSource = lt; GridViewLoaiBaiViet.DataBind(); PanelDanhSach.Visible = true; PanelMessage.Visible = false; return lt.Count; } else { PanelDanhSach.Visible = false; PanelMessage.Visible = true; return 0; } }