数字转大写

static string ConvertToChinese(double x)
{
string s = x.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 '负元空零壹贰叁肆伍陆柒捌玖空空空空空空空分角拾佰仟万亿兆京垓秭穰'[m.Value[0] - '-'].ToString(); });
}

数字转大写