C# 正則提取網頁内容

        string zhengze = "(?<=<title>)(.*?)(?=</title>)"; //建立正則比對

        try

        {

            Match m = Regex.Match(result, zhengze);  //正則比對

            if (m.Success)

            {

                HtmlCodeNew = m.Value;

                Response.Write(HtmlCodeNew);

            }

        }

        catch