C#通用类库--数字转为人民币汉字大写表示

//类名:EcanRMB
//作用:数字转换为人民币大写
//作者:刘典武
//时间:2010-12-04

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

namespace Ecan
{
    
public class EcanRMB
    {
        
/// <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 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 
= "" + str1.Substring(temp * 11);
                            ch2 
= str2.Substring(i, 1);
                            nzero 
= 0;
                        }
                        
else
                        {
                            ch1 
= str1.Substring(temp * 11);
                            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 
= "" + str1.Substring(temp * 11);
                        ch2 
= str2.Substring(i, 1);
                        nzero 
= 0;
                    }
                    
else
                    {
                        
if (str3 != "0" && nzero == 0)
                        {
                            ch1 
= str1.Substring(temp * 11);
                            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 + '';
                }
            }
            
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 string CmycurD(string numstr)
        {
            
try
            {
                
decimal num = Convert.ToDecimal(numstr);
                
return CmycurD(num);
            }
            
catch
            {
                
return "非数字形式!";
            }
        }
    }
}

基本用法:

EcanRMB rmb = new EcanRMB();
MessageBox.Show ( rmb.CmycurD("4568589647.34"));

 

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posted @ 2010-12-05 19:16  飞扬青云  阅读(11456)  评论(1编辑  收藏  举报