C#正则表达式保留头尾替换中间为*

Posted 2022-12-09 沧海·

数据脱敏 身份证号码、证件号码
以下示例是保留前后两位，可以自行调控

  public string ReturnCertificateNumNO(string CERTIFICATE_NUMBER)
        
            string pattern = @"(?<=[\\d]2)\\d(?=[\\S]2)";
            Regex rgx = new Regex(pattern);
            var res = rgx.Replace(CERTIFICATE_NUMBER, "*");
           
            return res;