邮箱正则匹配、获取网页内容

        /// <summary>
        /// 取得内容中所有匹配的 Email地址。
        /// </summary>
        /// <param name="sHtmlText">内容</param>
        /// <returns>匹配列表</returns>
        public static string[] GetContentList(string sHtmlText)
        {
            //string pattern = @"<div class=[^<>]+>(?<imgUrl>[^<>]+)</div>";
            //邮箱匹配正则
            string pattern = @"(?<Email>(?("")(""[^""]+?""@)|(([0-9a-z]((\.(?!\.))|[-!#\$%&'\*\+/=\?\^`\{\}\|~\w])*)(?<=[0-9a-z])@))(?(\[)(\[(\d{1,3}\.){3}\d{1,3}\])|(([0-9a-z][-\w]*[0-9a-z]*\.)+[a-z0-9]{2,17})))";
            Regex regImg = new Regex(pattern, RegexOptions.IgnoreCase);
            // 搜索匹配的字符串            
            MatchCollection matches = regImg.Matches(sHtmlText);
            int i = 0;
            string[] sUrlList = new string[matches.Count];
            // 取得匹配项列表
            foreach (Match match in matches)
                sUrlList[i++] = match.Groups["Email"].Value;
            return sUrlList;
        }

        //获取网页内容 传递url地址
        private string GetWebRequest(string url)
        {
            WebRequest request = WebRequest.Create(url);
            WebResponse response = request.GetResponse();
            Stream resstream = response.GetResponseStream();
            StreamReader srbname = new StreamReader(resstream, System.Text.Encoding.GetEncoding("UTF-8"));
            return srbname.ReadToEnd();   
        }