C# 大小写转换（金额）

Class：EcanRMB.cs

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 
  6 namespace Jxc.WinClient.BLL
  7 {
  8     public class EcanRMB
  9     {
 10         /// <summary>
 11         /// 转换人民币大小金额
 12         /// </summary>
 13         /// <param name="num">金额</param>
 14         /// <returns>返回大写形式</returns>
 15         public string CmycurD(decimal num)
 16         {
 17             string str1 = "零壹贰叁肆伍陆柒捌玖";            //0-9所对应的汉字
 18             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
 19             string str3 = "";    //从原num值中取出的值
 20             string str4 = "";    //数字的字符串形式
 21             string str5 = "";  //人民币大写金额形式
 22             int i;    //循环变量
 23             int j;    //num的值乘以100的字符串长度
 24             string ch1 = "";    //数字的汉语读法
 25             string ch2 = "";    //数字位的汉字读法
 26             int nzero = 0;  //用来计算连续的零值是几个
 27             int temp;            //从原num值中取出的值
 28 
 29             num = Math.Round(Math.Abs(num), 2);    //将num取绝对值并四舍五入取2位小数
 30             str4 = ((long)(num * 100)).ToString();        //将num乘100并转换成字符串形式
 31             j = str4.Length;      //找出最高位
 32             if (j > 15) { return "溢出"; }
 33             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
 34 
 35             //循环取出每一位需要转换的值
 36             for (i = 0; i < j; i++)
 37             {
 38                 str3 = str4.Substring(i, 1);          //取出需转换的某一位的值
 39                 temp = Convert.ToInt32(str3);      //转换为数字
 40                 if (i != (j - 3) && i != (j - 7) && i != (j - 11) && i != (j - 15))
 41                 {
 42                     //当所取位数不为元、万、亿、万亿上的数字时
 43                     if (str3 == "0")
 44                     {
 45                         ch1 = "";
 46                         ch2 = "";
 47                         nzero = nzero + 1;
 48                     }
 49                     else
 50                     {
 51                         if (str3 != "0" && nzero != 0)
 52                         {
 53                             ch1 = "零" + str1.Substring(temp * 1, 1);
 54                             ch2 = str2.Substring(i, 1);
 55                             nzero = 0;
 56                         }
 57                         else
 58                         {
 59                             ch1 = str1.Substring(temp * 1, 1);
 60                             ch2 = str2.Substring(i, 1);
 61                             nzero = 0;
 62                         }
 63                     }
 64                 }
 65                 else
 66                 {
 67                     //该位是万亿，亿，万，元位等关键位
 68                     if (str3 != "0" && nzero != 0)
 69                     {
 70                         ch1 = "零" + str1.Substring(temp * 1, 1);
 71                         ch2 = str2.Substring(i, 1);
 72                         nzero = 0;
 73                     }
 74                     else
 75                     {
 76                         if (str3 != "0" && nzero == 0)
 77                         {
 78                             ch1 = str1.Substring(temp * 1, 1);
 79                             ch2 = str2.Substring(i, 1);
 80                             nzero = 0;
 81                         }
 82                         else
 83                         {
 84                             if (str3 == "0" && nzero >= 3)
 85                             {
 86                                 ch1 = "";
 87                                 ch2 = "";
 88                                 nzero = nzero + 1;
 89                             }
 90                             else
 91                             {
 92                                 if (j >= 11)
 93                                 {
 94                                     ch1 = "";
 95                                     nzero = nzero + 1;
 96                                 }
 97                                 else
 98                                 {
 99                                     ch1 = "";
100                                     ch2 = str2.Substring(i, 1);
101                                     nzero = nzero + 1;
102                                 }
103                             }
104                         }
105                     }
106                 }
107                 if (i == (j - 11) || i == (j - 3))
108                 {
109                     //如果该位是亿位或元位，则必须写上
110                     ch2 = str2.Substring(i, 1);
111                 }
112                 str5 = str5 + ch1 + ch2;
113 
114                 if (i == j - 1 && str3 == "0")
115                 {
116                     //最后一位（分）为0时，加上“整”
117                     str5 = str5 + '整';
118                 }
119             }
120             if (num == 0)
121             {
122                 str5 = "零元整";
123             }
124             return str5;
125         }
126 
127         /**/
128         /// <summary>
129         /// 一个重载，将字符串先转换成数字在调用CmycurD(decimal num)
130         /// </summary>
131         /// <param name="num">用户输入的金额，字符串形式未转成decimal</param>
132         /// <returns></returns>
133         public string CmycurD(string numstr)
134         {
135             try
136             {
137                 decimal num = Convert.ToDecimal(numstr);
138                 return CmycurD(num);
139             }
140             catch
141             {
142                 return "非数字形式！";
143             }
144         }
145     }
146 }

调用：

View Code

1  EcanRMB rmb = new EcanRMB();
2                     string Rmb = txtAmount.Text.Replace(",", "").Replace("-","");
3                     label9.Text = rmb.CmycurD(Rmb);
4                     label11.Text = Convert.ToDecimal(txtAmount.Text).ToString("###,###,###.00");