c#實現人民幣大小寫轉換的代碼

c#實現人民幣大小寫轉換的代碼

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Utility
{
    /// <summary>
    ///金錢轉換成大寫    DBA群： 225982985
    /// </summary>
    public class ConvertMoney
    {
        public ConvertMoney()
        {
            //
            //TODO: 在此處添加構造函數邏輯
            //
        }
        /// <summary>
        /// 把數字轉換成對應的大寫錢數
        /// </summary>
        /// <param name="strDigital">要轉換的數字</param>
        /// <returns>轉換結果</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位長，前面補0


        string stry = je.Substring(0, 4);//取得'億'單元
        string strw = je.Substring(4, 4);//取得'萬'單元
        string strg = je.Substring(8, 4);//取得'元'單元
        string strf = je.Substring(13, 2);//取得小數部分


        string str1 = "", str2 = "", str3 = "";


        str1 = this.getupper(stry, "億");//億單元的大寫
        str2 = this.getupper(strw, "萬");//萬單元的大寫
        str3 = this.getupper(strg, "元");//元單元的大寫


        string str_y = "", str_w = "";
        if (je[3] == '0' || je[4] == '0')//億和萬之間是否有0
            str_y = "零";
        if (je[7] == '0' || je[8] == '0')//萬和元之間是否有0
            str_w = "零";


        ret = str1 + str_y + str2 + str_w + str3;//億，萬，元的三個大寫合并


        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'，則加一個'元'字
            ret = ret + "元";


        if (ret == "零零元")//若為零元，則去掉"元數"，結果只要小數部分
            ret = "";


        if (strf == "00")//下面是小數部分的轉換
        {
            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轉為"零叁分"，而直接轉為"叁分"
        }


        return ret;//完成，返回
    }


    /// <summary>
    /// 把一個單元轉為大寫，如億單元，萬單元，個單元
    /// </summary>
    /// <param name="str">這個單元的小寫數字（4位長，若不足，則前面補零）</param>
    /// <param name="strDW">億，萬，元</param>
    /// <returns>轉換結果</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")//保證若有兩個零'00'，結果只有一個零，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')//若第一個字符是'零'，則去掉
            ret = ret.Substring(1);
        if (ret[ret.Length - 1] == '零')//若最后一個字符是'零'，則去掉
            ret = ret.Substring(0, ret.Length - 1);


        return ret + strDW;//加上本單元的單位


    }
    /// <summary>
    /// 單個數字轉為大寫
    /// </summary>
    /// <param name="c">小寫阿拉伯數字 0---9</param>
    /// <returns>大寫數字</returns>
    private string getint(char c)
    {
        string str = "";
        switch (c)
        {
            case '0':
                str = "零";
                break;
            case '1':
                str = "壹";
                break;
            case '2':
                str = "貳";
                break;
            case '3':
                str = "叁";
                break;
            case '4':
                str = "肆";
                break;
            case '5':
                str = "伍";
                break;
            case '6':
                str = "陸";
                break;
            case '7':
                str = "柒";
                break;
            case '8':
                str = "拐";
                break;
            case '9':
                str = "玖";
                break;
        }
        return str;
    }


}

} 
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