c# RMBHepler 人名币转换

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
/*****************************
 * 概要：人民币
 * 设计者：DuanXuWen
 * 设计时间：20180309
 * 版本：0.1
 * 修改者：
 * 修改时间：
 * ***************************/
namespace Common
{
    public class RMBHepler
    {
        /// <summary>
        /// 获取大写人民币(汉字)
        /// </summary>
        /// <param name=\"rmbstr\">金额</param>
        /// <returns>返回大写形式</returns>
        public static string GetCapitalRMB(string rmbstr)
        {
            try
            {
                decimal rmbdec = Convert.ToDecimal(rmbstr);
                return GetCapitalRMB(rmbdec);
            }
            catch
            {
                return \"非数字形式！\";
            }
        }

        /// <summary>
        /// 获取大写人民币
        /// </summary>
        /// <param name=\"num\">金额</param>
        /// <returns>返回大写形式</returns>
        public static string GetCapitalRMB(decimal rmb)
        {
            string str1 = \"零壹贰叁肆伍陆柒捌玖\";//0-9所对应的汉字
            string str2 = \"万仟佰拾亿仟佰拾万仟佰拾元角分\";//数字位所对应的汉字
            string str3 = \"\";//从原num值中取出的值
            string str4 = \"\";//数字的字符串形式
            string str5 = \"\";//人民币大写金额形式
            int i;//循环变量
            int j;//num的值乘以100的字符串长度
            string ch1 = \"\";//数字的汉语读法
            string ch2 = \"\";//数字位的汉字读法
            int nzero = 0;//用来计算连续的零值是几个
            int temp;//从原num值中取出的值

            rmb = Math.Round(Math.Abs(rmb), 2);//将num取绝对值并四舍五入取2位小数
            str4 = ((long)(rmb * 100)).ToString();//将num乘100并转换成字符串形式
            j = str4.Length;//找出最高位
            if (j > 15) { return \"溢出\"; }
            str2 = str2.Substring(15 - j);//取出对应位数的str2的值。如：200.55,j为5所以str2=佰拾元角分

            //循环取出每一位需要转换的值
            for (i = 0; i < j; i++)
            {
                str3 = str4.Substring(i, 1);//取出需转换的某一位的值
                temp = Convert.ToInt32(str3);//转换为数字
                if (i != (j - 3) && i != (j - 7) && i != (j - 11) && i != (j - 15))
                {
                    //当所取位数不为元、万、亿、万亿上的数字时
                    if (str3 == \"0\")
                    {
                        ch1 = \"\";
                        ch2 = \"\";
                        nzero = nzero + 1;
                    }
                    else
                    {
                        if (str3 != \"0\" && nzero != 0)
                        {
                            ch1 = \"零\" + str1.Substring(temp * 1, 1);
                            ch2 = str2.Substring(i, 1);
                            nzero = 0;
                        }
                        else
                        {
                            ch1 = str1.Substring(temp * 1, 1);
                            ch2 = str2.Substring(i, 1);
                            nzero = 0;
                        }
                    }
                }
                else
                {
                    //该位是万亿，亿，万，元位等关键位
                    if (str3 != \"0\" && nzero != 0)
                    {
                        ch1 = \"零\" + str1.Substring(temp * 1, 1);
                        ch2 = str2.Substring(i, 1);
                        nzero = 0;
                    }
                    else
                    {
                        if (str3 != \"0\" && nzero == 0)
                        {
                            ch1 = str1.Substring(temp * 1, 1);
                            ch2 = str2.Substring(i, 1);
                            nzero = 0;
                        }
                        else
                        {
                            if (str3 == \"0\" && nzero >= 3)
                            {
                                ch1 = \"\";
                                ch2 = \"\";
                                nzero = nzero + 1;
                            }
                            else
                            {
                                if (j >= 11)
                                {
                                    ch1 = \"\";
                                    nzero = nzero + 1;
                                }
                                else
                                {
                                    ch1 = \"\";
                                    ch2 = str2.Substring(i, 1);
                                    nzero = nzero + 1;
                                }
                            }
                        }
                    }
                }
                if (i == (j - 11) || i == (j - 3))
                {
                    //如果该位是亿位或元位，则必须写上
                    ch2 = str2.Substring(i, 1);
                }
                str5 = str5 + ch1 + ch2;

                if (i == j - 1 && str3 == \"0\")
                {
                    //最后一位（分）为0时，加上“整”
                    str5 = str5 + \'整\';
                }
            }
            if (rmb == 0)
            {
                str5 = \"零元整\";
            }
            return str5;
        }

        /// <summary>
        /// 数字转中文数字
        /// </summary>
        /// <param name=\"numb\">金额</param>
        /// <returns>中文数字</returns>
        public static string NumbToChinese(int numb)
        {
            char[] numbArry = numb.ToString().ToArray();
            int len = numbArry.Length;
            bool isMultiple = false;
            if (numb % 10 == 0)
            {
                isMultiple = true;
            }
            StringBuilder str = new StringBuilder();
            for (int i = 0; i < len; i++)
            {
                string numbStr = \"\";
                switch (numbArry[i])
                {
                    case \'0\':
                        numbStr = \"零\";
                        break;
                    case \'1\':
                        numbStr = \"一\";
                        break;
                    case \'2\':
                        numbStr = \"二\";
                        break;
                    case \'3\':
                        numbStr = \"三\";
                        break;
                    case \'4\':
                        numbStr = \"四\";
                        break;
                    case \'5\':
                        numbStr = \"五\";
                        break;
                    case \'6\':
                        numbStr = \"六\";
                        break;
                    case \'7\':
                        numbStr = \"七\";
                        break;
                    case \'8\':
                        numbStr = \"八\";
                        break;
                    case \'9\':
                        numbStr = \"九\";
                        break;
                }
                if (isMultiple)
                {
                    if (numbArry[i] == \'1\')
                    {
                        numbStr = \"\";
                    }
                    str.Append(numbStr + ReNumbUnit(len - i));
                    break;
                }
                else
                {
                    if (i == 0 && numbArry[i] == \'1\' && len == 2)
                    {
                        numbStr = \"\";
                    }
                    if (i != len - 1 || numbStr != \"零\")
                    {
                        str.Append(numbStr + ReNumbUnit(len - i));
                    }
                }
            }
            return str.ToString();
        }

        /// <summary>
        /// 获取人民币单位
        /// </summary>
        /// <param name=\"index\">下标</param>
        /// <returns>string人民币单位</returns>
        private static string ReNumbUnit(int index)
        {
            string unitStr = \"\";
            switch (index)
            {
                case 2:
                    unitStr = \"十\";
                    break;
                case 3:
                    unitStr = \"百\";
                    break;
                case 4:
                    unitStr = \"千\";
                    break;
                case 5:
                    unitStr = \"万\";
                    break;
                case 6:
                    unitStr = \"十万\";
                    break;
                case 7:
                    unitStr = \"百万\";
                    break;
                case 8:
                    unitStr = \"千万\";
                    break;
                case 9:
                    unitStr = \"亿\";
                    break;
            }
            return unitStr;
        }
    }
}