正则过滤html标记

class Class1
{
    /// <summary>
    /// 去除HTML标记
    /// </summary>
    /// <param name="strHtml">包括HTML的源码 </param>
    /// <returns>已经去除后的文字</returns>
   public static string StripHTML(string strHtml)
    {
        string[] aryReg ={
     @"<script[^>]*?>.*?</script>",
 
      @"<(\/\s*)?!?((\w+:)?\w+)(\w+(\s*=?\s*(([""'])(file://[""'tbnr]|[^/7])*?/7|/w+)|.{0})|/s)*?(///s*)?>",
      @"([\r\n])[\s]+",
      @"&(quot|#34);",
      @"&(amp|#38);",
 
      @"&(lt|#60);",
      @"&(gt|#62);", 
      @"&(nbsp|#160);", 
      @"&(iexcl|#161);",
      @"&(cent|#162);",
      @"&(pound|#163);",
      @"&(copy|#169);",
      @"&#(\d+);",
      @"-->",
      @"<!--.*\n"
     
     };
 
       string[] aryRep = {
       "",
       "",
       "",
       "\"",
       "&",
       "<",
       ">",
       " ",
       "\xa1",//chr(161),
       "\xa2",//chr(162),
      "\xa3",//chr(163),
       "\xa9",//chr(169),
       "",
       "\r\n",
       ""
      };
 
        string newReg = aryReg[0];
        string strOutput = strHtml;
        for (int i = 0; i < aryReg.Length; i++)
        {
            Regex regex = new Regex(aryReg[i], RegexOptions.IgnoreCase);
            strOutput = regex.Replace(strOutput, aryRep[i]);
        }
 
        strOutput.Replace("<", "");
        strOutput.Replace(">", "");
        strOutput.Replace("\r\n", "");
 
 
        return strOutput;
    }
}