using System;namespace ExpertLib.ChineseSpecial
{
RMBException#region RMBException /**//// <summary>
/// 人民币转换的错误
/// </summary> public class RMBException : System.Exception { public RMBException(string msg) : base(msg) { } } #endregion /**//// <summary> /// 实现将人民币的数字形式转换为中文格式，最大支持9兆兆。 /// </summary> public static class RMB { 内部常量#region 内部常量 private static string RMBUppercase = "零壹贰叁肆伍陆柒捌玖"; private static string RMBUnitChar = "元拾佰仟万拾佰仟亿拾佰仟兆拾佰仟万拾佰仟亿拾佰仟兆"; //人民币整数位对应的标志 private const decimal MaxNumber =9999999999999999999999999.99m; private const decimal MinNumber = -9999999999999999999999999.99m; private static char[] cDelim = { '.' }; //小数分隔标识 #endregion Convert#region Convert Convert /**//// <summary> /// 转换成人民币大写形式 /// </summary> /// <param name="digital"></param> /// <returns></returns> public static string Convert(decimal number) { bool NegativeFlag=false; decimal RMBNumber; CheckNumberLimit(number); RMBNumber = Math.Round(number, 2); //将四舍五入取2位小数 if (RMBNumber == 0) { return "零元整"; } else if(RMBNumber < 0) //如果是负数 { NegativeFlag = true; RMBNumber = Math.Abs(RMBNumber); //取绝对值 } else { NegativeFlag = false; } string buf = ""; // 存放返回结果 string strDecPart = ""; // 存放小数部分的处理结果 string strIntPart = ""; // 存放整数部分的处理结果 string[] tmp = null; string strDigital = RMBNumber.ToString(); tmp = strDigital.Split(cDelim, 2); // 将数据分为整数和小数部分 if (RMBNumber >= 1m) // 大于1时才需要进行整数部分的转换 { strIntPart = ConvertInt(tmp[0]); } if (tmp.Length > 1) //分解出了小数 { strDecPart = ConvertDecimal(tmp[1]); } else //没有小数肯定是为整 { strDecPart = "整"; } if (NegativeFlag==false) //是否负数 { buf = strIntPart + strDecPart; } else { buf = "负"+strIntPart + strDecPart; } return buf; } #endregion Convert /**//// <summary> /// 转换成人民币大写形式 /// </summary> /// <param name="number"></param> /// <returns></returns> public static string Convert(double number) { decimal dec; try { dec = System.Convert.ToDecimal(number); } catch { throw new RMBException("不能转成标准的decimal类型:" + number.ToString()); } return Convert(dec); } #endregion Convert /**//// <summary> /// 转换成人民币大写形式 /// </summary> /// <param name="number"></param> /// <returns></returns> public static string Convert(float number) { decimal dec; try { dec = System.Convert.ToDecimal(number); } catch { throw new RMBException("不能转成标准的decimal类型:" + number.ToString()); } return Convert(dec); } #endregion Convert /**//// <summary> /// 转换成人民币大写形式 /// </summary> /// <param name="number"></param> /// <returns></returns> public static string Convert(int number) { decimal dec; dec = System.Convert.ToDecimal(number); return Convert(dec); } #endregion Convert /**//// <summary> /// 转换成人民币大写形式 /// </summary> /// <param name="number"></param> /// <returns></returns> public static string Convert(long number) { decimal dec; dec = System.Convert.ToDecimal(number); return Convert(dec); } #endregion Convert /**//// <summary> /// 转换成人民币大写形式 /// </summary> /// <param name="number"></param> /// <returns></returns> public static string Convert(string number) { decimal dec; try { dec = System.Convert.ToDecimal(number,null); } catch { throw new RMBException("不能转成标准的decimal类型:" + number); } return Convert(dec); } #endregion #endregion MaxSupportNumber#region MaxSupportNumber /**//// <summary> /// 支持的最大转换数 /// </summary> public static decimal MaxSupportNumber { get { return MaxNumber; } } #endregion MinSupportNumber#region MinSupportNumber /**//// <summary> /// 支持的最小数 /// </summary> public static decimal MinSupportNumber { get { return MinNumber; } } #endregion 内部函数#region 内部函数 ConvertInt#region ConvertInt private static string ConvertInt(string intPart) { string buf = ""; int length = intPart.Length; int curUnit = length; // 处理除个位以上的数据 string tmpValue = ""; // 记录当前数值的中文形式 string tmpUnit = ""; // 记录当前数值对应的中文单位 int i; for (i = 0; i < length - 1; i++, curUnit--) { if (intPart[i] != '0') { tmpValue = DigToCC(intPart[i]); tmpUnit = GetUnit(curUnit - 1); } else { // 如果当前的单位是"万、亿"，则需要把它记录下来 if ((curUnit - 1) % 4 == 0) { tmpValue = ""; tmpUnit = GetUnit(curUnit - 1);// } else { tmpUnit = ""; // 如果当前位是零，则需要判断它的下一位是否为零，再确定是否记录'零' if (intPart[i + 1] != '0') { tmpValue = "零"; } else { tmpValue = ""; } } } buf += tmpValue + tmpUnit; } // 处理个位数据 if (intPart[i] != '0') buf += DigToCC(intPart[i]); buf += "元"; return CombinUnit(buf); } #endregion ConvertDecimal#region ConvertDecimal /**//// <summary> /// 小数部分的处理 /// </summary> /// <param name="decPart">需要处理的小数部分</param> /// <returns></returns> private static string ConvertDecimal(string decPart) { string buf = ""; int i = decPart.Length; //如果小数点后均为零 if ((decPart == "0") || (decPart == "00")) { return "整"; } if (decPart.Length > 1) //2位 { if (decPart[0] == '0') //如果角位为零0.01 { buf = DigToCC(decPart[1]) + "分"; //此时不可能分位为零 } else if (decPart[1] == '0') { buf = DigToCC(decPart[0]) + "角整"; } else { buf = DigToCC(decPart[0]) + "角"; buf += DigToCC(decPart[1]) + "分"; } } else //1位 { buf += DigToCC(decPart[0]) + "角整"; } return buf; } #endregion GetUnit#region GetUnit /**//// <summary> /// 获取人民币中文形式的对应位置的单位标志 /// </summary> /// <param name="n"></param> /// <returns></returns> private static string GetUnit(int n) { return RMBUnitChar[n].ToString(); } #endregion DigToCC#region DigToCC /**//// <summary> /// 数字转换为相应的中文字符 ( Digital To Chinese Char ) /// </summary> /// <param name="c">以字符形式存储的数字</param> /// <returns></returns> private static string DigToCC(char c) { return RMBUppercase[c - '0'].ToString(); } #endregion CheckNumberLimit#region CheckNumberLimit private static void CheckNumberLimit(decimal number) { if ((number < MinNumber) || (number > MaxNumber)) { throw new RMBException("超出可转换的范围"); } } #endregion CombinUnit#region CombinUnit /**//// <summary> /// 合并兆亿万词 /// </summary> /// <param name="rmb"></param> /// <returns></returns> private static string CombinUnit(string rmb) { if (rmb.Contains("兆亿万")) { return rmb.Replace("兆亿万", "兆"); } if (rmb.Contains("亿万")) { return rmb.Replace("亿万", "亿"); } if (rmb.Contains("兆亿")) { return rmb.Replace("兆亿", "兆"); } return rmb; } #endregion #endregion }
}
