C# 将数字 转换成人民币大写的形式

【核心代码】

using System; 
 
namespace Test 
{ 
    /// <summary> 
    /// Rmb 的摘要说明。 
    /// </summary> 
    public class Rmb 
    { 
        /// <summary> 
        /// 转换人民币大小金额 
        /// </summary> 
        /// <param name="num">金额</param> 
        /// <returns>返回大写形式</returns> 
        public static string CmycurD(decimal num) 
        { 
            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 
 
            num = Math.Round(Math.Abs(num),2);    //将num取绝对值并四舍五入取2位小数 
            str4 = ((long)(num*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 (num == 0) 
            { 
                str5 = "零元整"; 
            } 
            return str5; 
        } 
 
        /// <summary> 
        /// 一个重载，将字符串先转换成数字在调用CmycurD(decimal num) 
        /// </summary> 
        /// <param name="num">用户输入的金额，字符串形式未转成decimal</param> 
        /// <returns></returns> 
        public static string CmycurD(string numstr) 
        { 
            try 
            { 
                decimal num = Convert.ToDecimal(numstr); 
                return CmycurD(num); 
            } 
            catch 
            { 
                return "非数字形式！"; 
            } 
        } 
    } 
}