曾经在N年前，，也写过一个阿拉伯数字转大写金额的代码，但那时候对正则还不是很了解，Replace写的一长串一长串，现在用正则后，妥妥的几次Replace搞定
与其它转换代码相比，当然也要有点独特（或者说是画蛇添足）的地方，同时支持简体与繁体，好歹台湾同胞们用的都是繁体不是？当然大写金额国内也认可繁体的说……
代码不多，就一个枚举和一个静态类
枚举ChineseLanguage用于确认要转化成哪种中文
public enum ChineseLanguage{/// <summary>/// 简体/// </summary>SimplifiedChinese = 0,/// <summary>/// 繁体/// </summary>TraditionalChinese = 1}ConvertIAmount为静态类，包含一个公开的扩展方法和两个私有的静态方法
using System.Text;using System.Text.RegularExpressions;public static class ConvertIAmount{/// <summary>/// 中文的单位，不采用兆京等易产生误解的单位/// </summary>private static readonly string[] ChineseNumberUnits = { "万拾佰仟亿", "萬拾佰仟億" };/// <summary>/// 中文的数字/// </summary>private static readonly string[] ChineseNumbers = { "零壹贰叁肆伍陆柒捌玖", "零壹貳叁肆伍陸柒捌玖" };/// <summary>/// RMB计价单位/// </summary>private static readonly string[] RMBUnits = { "圆角分", "圓角分" };/// <summary>/// 将阿拉伯数字转换为中文人民币书写/// </summary>/// <param name="number">要转换的阿拉伯数字</param>/// <param name="language">要转化为哪种中文，默认简体</param>/// <returns></returns>public static string ConvertChIAmount(this decimal number, ChineseLanguage language = ChineseLanguage.SimplifiedChinese){if (number < 0){throw new Exception("The number you want to change must be greater then zero.");}var integerPartNumber = decimal.ToUInt64(number);//整数部分string integerPart = ConvertIntegerPart(integerPartNumber, language);string decimalPart = ConvertDecimalPart((byte)((number – integerPartNumber) * 100), language);//低于二位的小数直接舍弃，不存在什么进制if (string.IsNullOrEmpty(decimalPart)){//不包含小数时，增加 整 标志return string.Format("{0} 整", integerPart);}else{//组织字符串并移除零圆（零圓）return string.Format("{0} {1}", integerPart, decimalPart).Trim(ChineseNumbers[0][0], RMBUnits[0][0], RMBUnits[1][0]).Trim();}}/// <summary>/// 转化整数部分/// </summary>/// <param name="number">ulong.Max=1844 6744 0737 0955 1615</param>/// <param name="language"></param>/// <returns></returns>private static string ConvertIntegerPart(ulong number, ChineseLanguage language){string numbers = ChineseNumbers[(int)language];string rmbUnits = RMBUnits[(int)language];string numberUnits = ChineseNumberUnits[(int)language];string returnStr;StringBuilder tmp = new StringBuilder();tmp.Append(rmbUnits[0]);//圆（圓）for (var i = 0; ; i++){if (i > 0){if (i % 8 == 0){tmp.Insert(0, numberUnits[4]);//亿（億）}else{tmp.Insert(0, numberUnits[i % 4]);//万（萬）拾佰仟}}var tmpInt = number % 10;tmp.Insert(0, numbers[(int)tmpInt]);number /= 10;if (number == 0) { break; }}string zero = numbers[0].ToString();//将 零[拾佰仟] 替换成 零returnStr = Regex.Replace(tmp.ToString(), string.Format("{0}[{1}{2}{3}]", numbers[0], numberUnits[1], numberUnits[2], numberUnits[3]), zero);//将 零{2,} 替换成 零returnStr = Regex.Replace(returnStr, string.Format("[{0}]{{2,}}", numbers[0]), zero);//将 零(?=[万亿]) 替换成 空格returnStr = Regex.Replace(returnStr, string.Format("{0}(?=[{1}{2}])", numbers[0], numberUnits[0], numberUnits[4]), string.Empty);//将 (?<=[亿])万 替换成 空格returnStr = Regex.Replace(returnStr, string.Format("(?<=[{0}]){1}", numberUnits[4], numberUnits[0]), string.Empty);//将 (?<=[万拾佰仟亿])零(?=圆) 替换成 空格returnStr = Regex.Replace(returnStr, string.Format("(?<=[{0}]){1}(?={2})", numberUnits, numbers[0], rmbUnits[0]), string.Empty);return returnStr;}/// <summary>/// 转化小数部分/// </summary>/// <param name="number"></param>/// <param name="language"></param>/// <returns></returns>private static string ConvertDecimalPart(byte number, ChineseLanguage language){string returnStr = string.Empty;if (number > 0){string numbers = ChineseNumbers[(int)language];string rmbUnits = RMBUnits[(int)language];returnStr = string.Format("{0}{1}{2}{3}", numbers[number / 10], rmbUnits[1], numbers[number % 10], rmbUnits[2]);//将 零[角分] 替换成 空格returnStr = Regex.Replace(returnStr, string.Format("{0}[{1}{2}]", numbers[0], rmbUnits[1], rmbUnits[2]), string.Empty);}return returnStr;}}
下面是测试代码
Console.WriteLine(ConvertIAmount.ConvertChIAmount(10000000100010.01m, ChineseLanguage.TraditionalChinese));//壹拾萬億零壹拾萬零壹拾圓 壹分Console.WriteLine(ConvertIAmount.ConvertChIAmount(10000000100010.01m));壹拾万亿零壹拾万零壹拾圆 壹分Console.WriteLine(ConvertIAmount.ConvertChIAmount(12060000100010.01m));//壹拾贰万零陆佰亿零壹拾万零壹拾圆 壹分Console.WriteLine(ConvertIAmount.ConvertChIAmount(12060000100010.01m, ChineseLanguage.TraditionalChinese));//壹拾貳萬零陸佰億零壹拾萬零壹拾圓 壹分
何愁没有快乐的泉溪在歌唱，何愁没有快乐的鲜花绽放！
