/// <summary>         /// 取得HTML中所有圖片的 URL。
        /// </summary>         /// <param name="sHtmlText">HTML代碼</param>         /// <returns>圖片的URL列表</returns>         public static string[] GetHtmlImageUrlList(string sHtmlText)
        {
            // 定義正則表達式用來匹配 img 標簽             Regex regImg = new Regex(@"<img/b[^<>]*?/bsrc[/s/t/r/n]*=[/s/t/r/n]*[""']?[/s/t/r/n]*(?<imgUrl>[^/s/t/r/n""'<>]*)[^<>]*?/?[/s/t/r/n]*>", RegexOptions.IgnoreCase);

            // 搜索匹配的字符串             MatchCollection matches = regImg.Matches(sHtmlText);

            int i = 0;
            string[] sUrlList = new string[matches.Count];

            // 取得匹配項列表             foreach (Match match in matches)
                sUrlList[i++] = match.Groups["imgUrl"].Value;

            return sUrlList;
        }