c#实现人民币大小写转换的代码

using System;  using System.Collections.Generic;  using System.Linq;  using System.Text;      namespace Utility  {      /// <summary>      ///金钱转换成大写    DBA群： 225982985      /// </summary>      public class ConvertMoney      {          public ConvertMoney()          {              //              //TODO: 在此处添加构造函数逻辑              //          }          /// <summary>          /// 把数字转换成对应的大写钱数          /// </summary>          /// <param name="strDigital">要转换的数字</param>          /// <returns>转换结果</returns>          public string ConvertSumToCap(string strDigital)          {              decimal dshuzi;              string ret = "";              dshuzi = decimal.Parse(strDigital);                  if (dshuzi == 0)              {                  ret = "零元整";                  return ret;              }                  string je = dshuzi.ToString("####.00");              if (je.Length > 15)                  return "";              je = new String('0', 15 - je.Length) + je;//若小于15位长，前面补0                  string stry = je.Substring(0, 4);//取得'亿'单元              string strw = je.Substring(4, 4);//取得'万'单元              string strg = je.Substring(8, 4);//取得'元'单元              string strf = je.Substring(13, 2);//取得小数部分                  string str1 = "", str2 = "", str3 = "";                  str1 = this.getupper(stry, "亿");//亿单元的大写              str2 = this.getupper(strw, "万");//万单元的大写              str3 = this.getupper(strg, "元");//元单元的大写                  string str_y = "", str_w = "";              if (je[3] == '0' || je[4] == '0')//亿和万之间是否有0                  str_y = "零";              if (je[7] == '0' || je[8] == '0')//万和元之间是否有0                  str_w = "零";                  ret = str1 + str_y + str2 + str_w + str3;//亿，万，元的三个大写合并                  for (int i = 0; i < ret.Length; i++)//去掉前面的"零"              {                  if (ret[i] != '零')                  {                      ret = ret.Substring(i);                      break;                  }                  }              for (int i = ret.Length - 1; i > -1; i--)//去掉最后的"零"              {                  if (ret[i] != '零')                  {                      ret = ret.Substring(0, i + 1);                      break;                  }              }                  if (ret[ret.Length - 1] != '元')//若最后不位不是'元'，则加一个'元'字                  ret = ret + "元";                  if (ret == "零零元")//若为零元，则去掉"元数"，结果只要小数部分                  ret = "";                  if (strf == "00")//下面是小数部分的转换              {                  ret = ret + "整";              }              else              {                  string tmp = "";                  tmp = this.getint(strf[0]);                  if (tmp == "零")                      ret = ret + tmp;                  else                      ret = ret + tmp + "角";                      tmp = this.getint(strf[1]);                  if (tmp == "零")                      ret = ret + "整";                  else                      ret = ret + tmp + "分";              }                  if (ret[0] == '零')              {                  ret = ret.Substring(1);//防止0.03转为"零叁分"，而直接转为"叁分"              }                  return ret;//完成，返回          }              /// <summary>          /// 把一个单元转为大写，如亿单元，万单元，个单元          /// </summary>          /// <param name="str">这个单元的小写数字（4位长，若不足，则前面补零）</param>          /// <param name="strDW">亿，万，元</param>          /// <returns>转换结果</returns>          private string getupper(string str, string strDW)          {              if (str == "0000")                  return "";                  string ret = "";              string tmp1 = this.getint(str[0]);              string tmp2 = this.getint(str[1]);              string tmp3 = this.getint(str[2]);              string tmp4 = this.getint(str[3]);              if (tmp1 != "零")              {                  ret = ret + tmp1 + "仟";              }              else              {                  ret = ret + tmp1;              }                  if (tmp2 != "零")              {                  ret = ret + tmp2 + "佰";              }              else              {                  if (tmp1 != "零")//保证若有两个零'00'，结果只有一个零，下同                      ret = ret + tmp2;              }                  if (tmp3 != "零")              {                  ret = ret + tmp3 + "拾";              }              else              {                  if (tmp2 != "零")                      ret = ret + tmp3;              }                  if (tmp4 != "零")              {                  ret = ret + tmp4;              }                  if (ret[0] == '零')//若第一个字符是'零'，则去掉                  ret = ret.Substring(1);              if (ret[ret.Length - 1] == '零')//若最后一个字符是'零'，则去掉                  ret = ret.Substring(0, ret.Length - 1);                  return ret + strDW;//加上本单元的单位              }          /// <summary>          /// 单个数字转为大写          /// </summary>          /// <param name="c">小写阿拉伯数字 0---9</param>          /// <returns>大写数字</returns>          private string getint(char c)          {              string str = "";              switch (c)              {                  case '0':                      str = "零";                      break;                  case '1':                      str = "壹";                      break;                  case '2':                      str = "贰";                      break;                  case '3':                      str = "叁";                      break;                  case '4':                      str = "肆";                      break;                  case '5':                      str = "伍";                      break;                  case '6':                      str = "陆";                      break;                  case '7':                      str = "柒";                      break;                  case '8':                      str = "拐";                      break;                  case '9':                      str = "玖";                      break;              }              return str;          }          }  }