去除字符中的脚本、样式、html标签

publicstaticstring DelHtml(thisstring Htmlstring)
    {

        //删除脚本  
        Htmlstring = Regex.Replace(Htmlstring, @"<script(\s[^>]*?)?>[\s\S]*?</script>", "", RegexOptions.IgnoreCase);
        //删除样式 
        Htmlstring = Regex.Replace(Htmlstring, @"<style>[\s\S]*?</style>", "", RegexOptions.IgnoreCase);
        //删除html标签
        Htmlstring = Regex.Replace(Htmlstring, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
        return Htmlstring;

    }