DataTable dt = new DataTable();
IEnumerable<IGrouping<
string, DataRow>> result = dt.Rows.Cast<DataRow>().GroupBy<DataRow,
string>(dr => dr[
"行政代码"].ToString().Substring(
0,
2));
//按行政区代码前两位分组
转载于:https://www.cnblogs.com/SeNaiTes/p/10615851.html
相关资源：DataTable分组
