先记下来，以作备用！

///<summary>去除HTML标记//////</summary>///<param name="Htmlstring">包括HTML的源码</param>///<returns>已经去除后的文字</returns>publicstaticstringGetNoHTMLString(stringHtmlstring)
        {//删除脚本Htmlstring=Regex.Replace(Htmlstring,@"<script[^>]*?>.*?</script>","", RegexOptions.IgnoreCase);//删除HTMLHtmlstring=Regex.Replace(Htmlstring,@"<(.[^>]*)>","", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"([\r\n])[\s]+","", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"-->","", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"<!--.*","", RegexOptions.IgnoreCase);

Htmlstring=Regex.Replace(Htmlstring,@"&(quot|#34);","\"", RegexOptions.IgnoreCase);Htmlstring=Regex.Replace(Htmlstring,@"&(amp|#38);","&", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"&(lt|#60);","<", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"&(gt|#62);",">", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"&(nbsp|#160);","", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"&(iexcl|#161);","\xa1", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"&(cent|#162);","\xa2", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"&(pound|#163);","\xa3", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"&(copy|#169);","\xa9", RegexOptions.IgnoreCase);
            Htmlstring=Regex.Replace(Htmlstring,@"(\d+);","", RegexOptions.IgnoreCase);

Htmlstring.Replace("<","");
            Htmlstring.Replace(">","");
            Htmlstring.Replace("\r\n","");
            Htmlstring=HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim();returnHtmlstring;
        }///<summary>获取显示的字符串，可显示HTML标签，但把危险的HTML标签过滤，如iframe,script等。//////</summary>///<param name="str">未处理的字符串</param>///<returns></returns>publicstaticstringGetSafeHTMLString(stringstr)
        {
            str=Regex.Replace(str,@"<applet[^>]*?>.*?</applet>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<body[^>]*?>.*?</body>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<embed[^>]*?>.*?</embed>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<frame[^>]*?>.*?</frame>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<script[^>]*?>.*?</script>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<frameset[^>]*?>.*?</frameset>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<html[^>]*?>.*?</html>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<iframe[^>]*?>.*?</iframe>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<style[^>]*?>.*?</style>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<layer[^>]*?>.*?</layer>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<link[^>]*?>.*?</link>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<ilayer[^>]*?>.*?</ilayer>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<meta[^>]*?>.*?</meta>","", RegexOptions.IgnoreCase);
            str=Regex.Replace(str,@"<object[^>]*?>.*?</object>","", RegexOptions.IgnoreCase);returnstr;
        }