将DataTable中筛选中的结果保存到另外的DataTable

DataSet ds = new DataSet();            DataTable Dt = ds.Tables[0];            DataTable NewDt=Dt.Clone();            foreach (DataRow dr in Dt.Select("客户 = '" + id + "'"))            {                NewDt.ImportRow(dr);            }            DataSet NewDs = new DataSet();            NewDs .Tables.Add(NewDt);