/// <summary>
        /// 檢查字串中是否有Html標籤
        /// </summary>
        /// <param name="html">Html原始碼</param>
        /// <returns>存在為True</returns>
        public static bool CheckHtml(string html)
        {
            string filter = "<[\\s\\S]*?>";
            if
 
 (Regex.IsMatch(html, filter))
            {
                return true;
            }

            filter = "[<>][\\s\\S]*?";

            if (Regex.IsMatch(html, filter))
            {
                return true;
            }

            return false;
        }

        /// <summary>
 

        /// 返回過濾掉所有的Html標籤後的字串
        /// </summary>
        /// <param name="html">Html原始碼</param>
        /// <returns>過濾Html標籤後的字串</returns>
        public static string ClearAllHtml(string html)
        {
            string filter = "<[\\s\\S]*?>";
            if (Regex.IsMatch(html, filter))
            {
                html 
 
= Regex.Replace(html, filter, "");
            }

            filter = "[<>][\\s\\S]*?";
            if (Regex.IsMatch(html, filter))
            {
                html = Regex.Replace(html, filter, "");
            }

            return html;
        }