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【CSharp】货币转大写
作者:hantianwei / 发布于2014/2/25/ 449
static public string convertMoneytoRMB(double decMoney)
    {
      string strMoney, strOneNum, strTemp, strConverted;
      int i, iLen;

      //设初值
      strConverted = "";
      strMoney = decMoney.ToString();
      iLen = strMoney.Length;

      //先取小数位
      if (strMoney.IndexOf(".") > 0)
      {
        strTemp = strMoney.Substring(strMoney.IndexOf(".") + 1, strMoney.Length - strMoney.IndexOf(".") - 1);
        if (strTemp.Length > 2)
        {
          Console.WriteLine("错误：无法计算超过2位的小数");
          return strConverted;
        }
        else if (strTemp == "0" || strTemp == "00" || strTemp == "")
          strTemp = "";
        else
        {
          if (strTemp.Length == 1 && strTemp != "0")
          {
            strConverted = converNumtoCapital(strTemp) + "角" + strConverted;
          }
          else
          {
            strOneNum = strTemp.Substring(0, 1);
            strConverted = converNumtoCapital(strOneNum) + (strOneNum != "0" ? "角" : "") + strConverted;
            strOneNum = strTemp.Substring(1, 1);
            strConverted = strConverted + (strOneNum != "0" ? converNumtoCapital(strOneNum) + "分" : "");
          }
        }
      }

      //取整数部分
      if (strMoney.IndexOf(".") < 0)
        strTemp = strMoney;
      else
        strTemp = strMoney.Substring(0, strMoney.IndexOf("."));

      iLen = strTemp.Length;
      Console.WriteLine(strTemp);

      if (iLen > 0 && decimal.Parse(strTemp) != 0)
      {
        strConverted = "元" + strConverted;

        for (i = 0; i < iLen; ++i)
        {
          strOneNum = strTemp.Substring(iLen - 1 - i, 1);
          if ((i + 1) == 1)
          {
            strConverted = (strOneNum == "0" ? "" : converNumtoCapital(strOneNum)) + strConverted;
          }
          else if (((i + 1) % 4 == 2 || (i + 1) == 2) && i % 4 != 0 && i % 8 != 0)
          {
            if (strOneNum == "0")
            {
              if (strConverted.Substring(0, 1) == "零" || strConverted.Substring(0, 1) == "元" || strConverted.Substring(0, 1) == "万" || strConverted.Substring(0, 1) == "亿")
                continue;
              else
                strConverted = "零" + strConverted;
            }
            else
              strConverted = converNumtoCapital(strOneNum) + "拾" + strConverted;
          }
          else if (((i + 1) % 4 == 3 || (i + 1) == 3) && i % 4 != 0)
          {
            if (strOneNum == "0")
            {
              if (strConverted.Substring(0, 1) == "零" || strConverted.Substring(0, 1) == "元" || strConverted.Substring(0, 1) == "万" || strConverted.Substring(0, 1) == "亿")
                continue;
              else
                strConverted = "零" + strConverted;
            }
            else
              strConverted = converNumtoCapital(strOneNum) + "佰" + strConverted;
          }
          else if ((i + 1) % 4 == 0 && i % 4 != 0)
          {
            if (strOneNum == "0")
            {
              if (strConverted.Substring(0, 1) == "零" || strConverted.Substring(0, 1) == "元" || strConverted.Substring(0, 1) == "万" || strConverted.Substring(0, 1) == "亿")
                continue;
              else
                strConverted = "零" + strConverted;
            }
            else
              strConverted = converNumtoCapital(strOneNum) + "千" + strConverted;
          }
          else if (i % 4 == 0 && i % 8 != 0)
          {
            Console.WriteLine("万位{0}", i);
            strConverted = (strOneNum == "0" ? "" : converNumtoCapital(strOneNum)) + "万" + strConverted;
          }
          else if (i % 8 == 0)
          {
            Console.WriteLine("亿位{0}", i);
            if (strConverted.Substring(0, 1) == "万") strConverted = strConverted.Substring(1, strConverted.Length - 1);
            strConverted = (strOneNum == "0" ? "" : converNumtoCapital(strOneNum)) + "亿" + strConverted;
          }
          else
          {
            Console.WriteLine(i);
            strConverted = converNumtoCapital(strOneNum) + strConverted;
          }
        }
      }

      return strConverted;
    }

    static string converNumtoCapital(string strNum)
    {
      string strCapital = "";
      switch (strNum)
      {
        case "0":
          strCapital = "零";
          break;
        case "1":
          strCapital = "壹";
          break;
        case "2":
          strCapital = "贰";
          break;
        case "3":
          strCapital = "叁";
          break;
        case "4":
          strCapital = "肆";
          break;
        case "5":
          strCapital = "伍";
          break;
        case "6":
          strCapital = "陆";
          break;
        case "7":
          strCapital = "柒";
          break;
        case "8":
          strCapital = "捌";
          break;
        case "9":
          strCapital = "玖";
          break;
        default:
          strCapital = "";
          break;
      }
      return strCapital;
    }
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