把标签全部进行替换 public static string ReplaceHtmlTag(string html, int length = 0) { string strText = System.Text.RegularExpressions.Regex.Replace(html, "<[^>]+>", ""); strText = System.Text.RegularExpressions.Regex.Replace(strText, "&[^;]+;", ""); if (length > 0 && strText.Length > length) return strText.Substring(0, length); return strText; }