Linq初学用法(3) 从dataTable 取出一列值

List<string>  timeList = (from d in _dt_base.AsEnumerable() select d.Field<string>("gettime")).ToList();


Dictionary<string, DataRow>  _dic_base = _dt_base.Rows.Cast<DataRow>().ToDictionary(x => ((DateTime)x["gettime"]).ToString("yyyy-MM-dd"), x =>x);

dataTable 转List 转Dictionary