datatable排序 方法

            DataTable varTable = getexcel(excelpath);//datatable 数据
            string expression;//筛选语句，用and分隔条件片断
            string sortOrder;//排序语句  默认升ASC 降desc 用,分隔条件片断 

            expression = "  deviceType<>‘‘ AND deviceAddress<> ‘‘ AND dataType<>‘‘ AND onErrorValue<>‘‘ AND isLock<>‘‘ AND  name <> ‘‘ ";
            sortOrder = "deviceType ASC,deviceAddress ASC";
            // Use the Select method to find all rows matching the filter.
            DataRow[] foundRows =varTable.Select(expression, sortOrder);