获取Html页面元素属性内容

获取网页HTML元素内容方法
①通过 正则表达式 匹配获取

              

 1 string resquestUrl = string.Empty;
 2                 //过来HTML元素方法
 3                 Regex rxGetInfo = new Regex("<label for=\"caller\">.*?</label>", RegexOptions.IgnoreCase);
 4                 Regex rxFilter = new Regex("<.*?>");
 5                 HttpWebRequest request = WebRequest.Create(resquestUrl) as HttpWebRequest;
 6                 HttpWebResponse response = request.GetResponse() as HttpWebResponse;
 7                 StreamReader sr = new StreamReader(response.GetResponseStream());
 8                 string returnContent = sr.ReadToEnd();
 9                 sr.Close();
10                 response.Close();
11                 MatchCollection mc = rxGetInfo.Matches(returnContent);

②根据元素属性 GetElementById获取
 HtmlDocument temphtml = new HtmlDocument();
 temphtml.GetElementById();
③过滤html标签

 1  /// <summary>
 2         /// 过滤html标签
 3         /// </summary>
 4         /// <param name="strHtml">html的内容</param>
 5         /// <returns></returns>
 6         public static string StripHTML(string stringToStrip)
 7         {
 8             // paring using RegEx           //
 9             stringToStrip = Regex.Replace(stringToStrip, "</p(?:\\s*)>(?:\\s*)<p(?:\\s*)>", "\n\n", RegexOptions.IgnoreCase | RegexOptions.Compiled);
10             stringToStrip = Regex.Replace(stringToStrip, "<br(?:\\s*)/>", "\n", RegexOptions.IgnoreCase | RegexOptions.Compiled);
11             stringToStrip = Regex.Replace(stringToStrip, "\"", "''", RegexOptions.IgnoreCase | RegexOptions.Compiled);
12             stringToStrip = StripHtmlXmlTags(stringToStrip);
13             return stringToStrip;
14         }
15 
16         private static string StripHtmlXmlTags(string content)
17         {
18             return Regex.Replace(content, "<[^>]+>", "", RegexOptions.IgnoreCase | RegexOptions.Compiled);
19         }