/// <summary>
        /// 获得字符串中开始和结束字符串中间得值列表
        /// </summary>
        /// <param name="styleContent">样式内容</param>
        /// <returns></returns>
        private MatchCollection GetValueList(string str, string s, string e)
        {
            return Regex.Matches(str, "(?<=(" + s + "))[.\\s\\S]*?(?=(" + e + "))", RegexOptions.IgnoreCase);
        }

            MatchCollection HrefList = this.GetValueList(listHtml, ListHrefBegin, ListHrefEnd);
            foreach (Match match in HrefList)//循环获取
            {
                if (match.Value.StartsWith("/"))
                    list += "http://" + uri.Host + match.Value + "\r\n";
                else
                    list += match.Value + "\r\n";
            }