c# 过滤页面特殊字符

先保存，估计能用到

/// <summary>
        /// 去除框架、去除连接、去除脚本等特殊字符。
        /// </summary>
        /// <param name="html"></param>
        /// <returns></returns>
        private string checkStr(string html)
        {
            System.Text.RegularExpressions.Regex regex1 = new System.Text.RegularExpressions.Regex(@"<script[\s\S]+</script *>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            //System.Text.RegularExpressions.Regex regex2 = new System.Text.RegularExpressions.Regex(@" href *= *[\s\S]*script *:", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            System.Text.RegularExpressions.Regex regex2 = new System.Text.RegularExpressions.Regex(@"(<a(.|\s)*?>)|</a>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            System.Text.RegularExpressions.Regex regex3 = new System.Text.RegularExpressions.Regex(@" no[\s\S]*=", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            System.Text.RegularExpressions.Regex regex4 = new System.Text.RegularExpressions.Regex(@"<iframe[\s\S]+</iframe *>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            System.Text.RegularExpressions.Regex regex5 = new System.Text.RegularExpressions.Regex(@"<frameset[\s\S]+</frameset *>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            //System.Text.RegularExpressions.Regex regex6 = new System.Text.RegularExpressions.Regex(@"\<img[^\>]+\>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            System.Text.RegularExpressions.Regex regex7 = new System.Text.RegularExpressions.Regex(@"</p>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            System.Text.RegularExpressions.Regex regex8 = new System.Text.RegularExpressions.Regex(@"<p>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            //System.Text.RegularExpressions.Regex regex9 = new System.Text.RegularExpressions.Regex(@"<[^>]*>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            html = regex1.Replace(html, ""); //过滤<script></script>标记
            html = regex2.Replace(html, ""); //过滤href=javas
cript: (<A>) 属性
            html = regex3.Replace(html, " _disibledevent="); //过滤其它控件的on...事件
            html = regex4.Replace(html, ""); //过滤iframe
            html = regex5.Replace(html, ""); //过滤frameset
            //html = regex6.Replace(html, ""); //过滤img
            html = regex7.Replace(html, ""); //过滤frameset
            html = regex8.Replace(html, ""); //过滤frameset
            //html = regex9.Replace(html, "");//过滤html标签。
            //html = html.Replace(" ", "");
            html = html.Replace("</strong>", "");
            html = html.Replace("<strong>", "");
            return html;

 第二个处理方法

 

 

 void Page_Load(object o , EventArgs e)
 {
 
  if(!Page.IsPostBack)
  {
   string s = @"<span class=lframe-t-text>今日<font color=red>热门新闻</font></span><div>adfadf</div& amp; gt;";
   s = System.Text.RegularExpressions.Regex.Replace(s,"<[^>]+>","");
   Response.Write(s);
  }
  
 }