c#正則表達式移除javascript 事件

private static string FixTag(Match tagMatch)

    {

        List<string> events = new List<string>();

 

        events.Add("onclick");

        events.Add("onmousedown");

        events.Add("onmouseover");

        events.Add("onmouseout");

        events.Add("onmouseup");

 

        bool flag = true;

        Regex regex = new Regex(" ([-\\w]+)(=(\"[^\"]*\"|'[^']*'|(#|_)?\\w+))?");

        string input = tagMatch.Value;

        string str2 = "";

        if (input.IndexOf("</") == 0)

        {

            return input.ToLower();

        }

        string str3 = tagMatch.Groups[1].Value.ToLower();

        str2 = "<" + str3;

        foreach (Match match in regex.Matches(input))

        {

            string text1 = match.Value;

            string item = match.Groups[1].Value;

            string str5 = match.Groups[3].Value.TrimStart(new char[] { '"' }).TrimEnd(new char[] { '"' });

            if (!flag || !events.Contains(item))

            {

                string str6 = str2;

                str2 = str6 + " " + item.ToLower() + "=\"" + str5 + "\"";

            }

        }

        return (str2 + ">");

    }

    public static string RemoveJavaScriptEventsFromTags(string input)

    {

 

        input = new Regex(@"</?([-\w]+)( [^>]+)?>").Replace(input, new MatchEvaluator(FixTag));

        return input;

}