C#过滤HTML代码

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public string NoHTML(string Htmlstring) //去除HTML标记 { //删除脚本 Htmlstring = Regex.Replace(Htmlstring,@"<script[^>]*?>.*?</script>","",RegexOptions.IgnoreCase); //删除HTML Htmlstring = 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();

return Htmlstring; }