c#的getSubStringLoop2ArrayList函数用于循环获取字符串中指定头尾间的内容的函数

        /// <summary>
        /// 循环在字串中搜索数据头和数据尾，结果存入ArrayList
        /// 需要引用 using System.Collections; 才能使用ArrayList对象
        /// </summary>
        /// <param name="strfull"></param>
        /// <param name="strhead"></param>
        /// <param name="strfoot"></param>
        /// <returns></returns>
        public ArrayList getSubStringLoop2ArrayList(string strfull, string strhead, string strfoot) {
            ArrayList al = new ArrayList();
            int pos0 = 0, posx = 0;
            string tmpa = "";
            while (posx > -1) {
                tmpa = getSubStringLoop(strfull, strhead, strfoot, pos0, out posx);
                if (tmpa != "") {
                    al.Add(tmpa);
                }
                pos0 = posx;
                if (posx == -1) {
                    break;
                }
            }
            return al;
        }
        /// <summary>
        /// 循环在字串中搜索数据头和数据尾，并返回数据头至数据尾之间的字符串和下一个位置
        /// 由getSubStringLoop2ArrayList调用
        /// </summary>
        /// <param name="strfull"></param>
        /// <param name="strhead"></param>