C#小写数字金额转换成大写人民币金额的算法

using System.Text.RegularExpressions;

        private string DaXie(string money)
        {

            string s = double.Parse(money).ToString("#L#E#D#C#K#E#D#C#J#E#D#C#I#E#D#C#H#E#D#C#G#E#D#C#F#E#D#C#.0B0A");

            string d = Regex.Replace(s, @"((?<=-|^)[^1-9]*)|((?'z'0)[0A-E]*((?=[1-9])|(?'-z'(?=[F-L\.]|$))))|((?'b'[F-L])(?'z'0)[0A-L]*((?=[1-9])|(?'-z'(?=[\.]|$))))", "${b}${z}");

            return Regex.Replace(d, ".", delegate(Match m) { return "负圆空零壹贰叁肆伍陆柒捌玖空空空空空空空分角拾佰仟万億兆京垓秭穰"[m.Value[0] - '-'].ToString(); });
        }