我正在尝试优化SharePointWeb部件的代码。我有一个中继器控件:'>我正在用数据表填充它countriesList=countriesList.Distinct().ToList();countriesList.Sort();//varnoDupsCountriesList=newHashSet(countriesList);DataTabledt=newDataTable();dt.Columns.Add("CountryName");foreach(StringcountryNameincountriesList){DataRowdr=dt.NewRow();dr["Cou