private void LoadTreeview() { try { DanhMucProcess danhMucProcess = new DanhMucProcess(); DataTable dtTreeDonVi = new DataTable(); dtTreeDonVi = danhMucProcess.GetTreeDonVi(ClientInformation.TenDangNhap, ClientInformation.MaDonViQuanLy).Tables[0]; //Cấu trúc của Tag: GiaTri#Level item.Items.Clear(); foreach (DataRow dr in dtTreeDonVi.Rows) { if (Convert.ToInt32(dr["LEVEL"]) == 1) { item.Tag = dr["NODE"].ToString() + "#" + dr["LEVEL"].ToString(); item.Header = dr["NODE_NAME"].ToString(); item.IsExpanded = true; break; } } BuildTree(item, dtTreeDonVi); } catch (Exception ex) { LLogging.WriteLog(System.Reflection.MethodInfo.GetCurrentMethod().ToString(), LLogging.LogType.ERR, ex); } }