/// 
        /// 添加关键字以及描述         /// 
        /// 关键字        /// 描述        /// Page        public static void addMeta(string key, string des, System.Web.UI.Page page)        {            Literal keywords = new Literal(), description = new Literal();            keywords.Text = "
     ";            description.Text = "
     ";            page.Header.Controls.Add(keywords);            page.Header.Controls.Add(description);        }        /// 
        /// 读取某网页的关键字或描述         /// 
        /// 链接地址(http://www.baidu.com)        /// 所要读取的类别        /// 
             public static string setMeta(string url, string Type)        {            using (System.Net.WebClient wc = new System.Net.WebClient())            {                string html = wc.DownloadString(url);                int sp = html.IndexOf("name=" + Type);                int se = html.IndexOf("\">", sp);                html = html.Substring(sp, se - sp);                sp = html.IndexOf("\"") + 1;                return html.Substring(sp);            }        }