获取DataTable某一列的所有值
/// <summary> /// 获取某一列的所有值 /// </summary> /// <typeparam name="T">列数据类型</typeparam> /// <param name="dtSource">数据表</param> /// <param name="filedName">列名</param> /// <returns></returns> public static List<T> GetColumnValues<T>(DataTable dtSource,string filedName) { return (from r in dtSource.AsEnumerable() select r.Field<T>("ID")).ToList<T>(); } 方法调用: 获取字段ID的所有值 DataTable dt = ......; List<int> ids= DataTablePro.GetColumnValues<int>(dt, "ID"); 直接使用: //遍历DataTable,取出所有的ID : List<int> lstID = (from d in dt.AsEnumerable() select d.Field<int>("ID")).ToList();