求一HTML标签正则

Question

想替换掉所有html标签，但<br>、<br />、<p>、</p>保留正则html

Answer 1

(?is)<((?!(br|p))\w*)[^>]*?>.*?</\1>

Answer 2

string s="yourhtml";
s=Regex.Replace(s,"(?is)<((?!(br|p))\w*)[^>]*?>.*?</\1>","");

Answer 3

        /// <summary>
        /// 从HTML中获取文本,保留br,p,img
        /// </summary>
        /// <param name="HTML"></param>
        /// <returns></returns>
        public static string GetTextFromHTML(string HTML)
        {
            System.Text.RegularExpressions.Regex regEx = new System.Text.RegularExpressions.Regex(@"</?(?!br|/?p|img)[^>]*>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);            return regEx.Replace(HTML, "");
        }