Himall验证Web帮助类HTML解码

 //浏览器列表
        private static string[] _browserlist = new string[] { "ie", "chrome", "mozilla", "netscape", "firefox", "opera", "konqueror" };
        //搜索引擎列表
        private static string[] _searchenginelist = new string[] { "baidu", "google", "360", "sogou", "bing", "msn", "sohu", "soso", "sina", "163", "yahoo", "jikeu" };
        //meta正则表达式
        private static Regex _metaregex = new Regex("

        #region 编码

        ///

        /// HTML解码
        ///

        ///
        public static string HtmlDecode(string s)
        {
            return HttpUti