DataSet ds = new DataSet();
                        string explorerdata = @"SELECT TMPLOGID,
                                  APP,
                                  FILENAME,
                                  OPERATOR,
                                  FILESIZE,
                                  AUTHOR,
                                  LOGTIME,
                                  OTHER,
                                  LOGSEQUENCE,
                                  ISANALYSIS
                                FROM TB_TMPLOG 
                                 WHERE 1=1 and  LogTime>='{0}' and LogTime<='{1}' and Author='{2}' and app='explorer.exe' and  decode(isanalysis,null,0,1)=0";
                        explorerdata = string.Format(explorerdata, beginDate, endDate, userid);
                        ds = getDataSetBySQL(explorerdata);//获取临时日志表数据
                        DataTable dt = ds.Tables[0];
                        //DataRow rowT = t.Rows[0];
                        //object obj = rowT[6];
                        //DateTime dt = Convert.ToDateTime(obj);
                        //string strTime = dt.Year + "-" + dt.Month + "-" + dt.Day + " " + dt.TimeOfDay;

                        /*end 获取临时日志表数据*/

                        /*处理数据*/
                        if (dt.Rows.Count < 1)//没数据则继续循环
                            continue;
                        string operators = null;
                        string filenames = null;
                        string sizes = null;
                        string strdate = null;
                        string logids = null;
                        var query1 =

                            from pl in dt.AsEnumerable()
                            orderby pl.Field<decimal>("logsequence")
                            group pl by pl.Field<string>("logtime")
                                into temppl
                                select new { Desc = temppl.Key, Total = temppl.Count(), detail = temppl, AA = temppl.ToArray() };

------解决方案--------------------

排序可以用集合呀。
但我也想把代码写成可复用的。
#region T1字符串
       public static void TTT1()
       {
           List<string> stdList = new List<string>() { "3" };
           List<string> recordList = new List<string>() { "1", "0", "1", "3", "5", "1", "3", "0", "1", "3", "0", "1", "3", "1", "3", "0" };

           List<string> nextList = FindNext(stdList, recordList);
           foreach (var item in nextList)
           {
               Console.WriteLine(item.ToString());
           }

       }
       /// <summary>
       /// 字符串
       /// </summary>
       /// <param name="stdList"></param>
       /// <param name="recordList"></param>
       /// <returns></returns>
       public static List<string> FindNext(List<string> stdList, List<string> recordList)
       {
           List<string> lstNext = new List<string>();

           int La = 0;
           string[] stArr = stdList.ToArray();
           foreach (var item in recordList)
           {
               Console.Write(" : " + item.ToString());
               int vResult = 0;
               for (int i = 0; i < stArr.Length; i++)