Regex re_first = new Regex(@"[--]+.*[--]+\r\n", RegexOptions.None);

string Firststring = re_first.Replace(reader.ReadToEnd(), "");

Regex re_sec = new Regex(@"[A-z]+.*\r\n", RegexOptions.None);

Firststring = re_sec.Replace(Firststring,"");

Firststring = Firststring.Replace("\r\n", ";");

string[] m = Firststring.Split(';');

ansysresult ansys = new ansysresult();

Regex re = new Regex(@"\s+", RegexOptions.None);

自我总结:

新建一个正则表达式 Regex re_first = new Regex(@"正则表达式", RegexOptions.None);

替换方式: string Firststring = re_first.Replace("替换这里面符合正则表达式的字符串","替换为什么东东");