C# 大小寫轉換(金額)實例代碼

Class：EcanRMB.cs
代碼如下：

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

 namespace Jxc.WinClient.BLL
 {
     public class EcanRMB
     {
         /// <summary>
         /// 轉換人民幣大小金額
         /// </summary>
         /// <param name="num">金額</param>
         /// <returns>返回大寫形式</returns>
         public string CmycurD(decimal num)
         {
             string str1 = "零壹貳三肆伍陸柒捌玖";            //0-9所對應的漢字
             string str2 = "萬仟佰拾億仟佰拾萬仟佰拾元角分"; //數字位所對應的漢字
             string str3 = "";    //從原num值中取出的值
             string str4 = "";    //數字的字符串形式
             string str5 = "";  //人民幣大寫金額形式
             int i;    //循環變量
             int j;    //num的值乘以100的字符串長度
             string ch1 = "";    //數字的漢語讀法
             string ch2 = "";    //數字位的漢字讀法
             int nzero = 0;  //用來計算連續的零值是幾個
             int temp;            //從原num值中取出的值

             num = Math.Round(Math.Abs(num), 2);    //將num取絕對值並四捨五入取2位小數
             str4 = ((long)(num * 100)).ToString();        //將num乘100並轉換成字符串形式
             j = str4.Length;      //找出最高位
             if (j > 15) { return "溢出"; }
             str2 = str2.Substring(15 - j);   //取出對應位數的str2的值。如：200.55,j為5所以str2=佰拾元角分

             //循環取出每一位需要轉換的值
             for (i = 0; i < j; i++)
             {
                 str3 = str4.Substring(i, 1);          //取出需轉換的某一位的值
                 temp = Convert.ToInt32(str3);      //轉換為數字
                 if (i != (j - 3) && i != (j - 7) && i != (j - 11) && i != (j - 15))
                 {
                     //當所取位數不為元、萬、億、萬億上的數字時
                     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
                 {
                     //該位是萬億，億，萬，元位等關鍵位
                     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))
                 {
                     //如果該位是億位或元位，則必須寫上
                     ch2 = str2.Substring(i, 1);
                 }
                 str5 = str5 + ch1 + ch2;

                 if (i == j - 1 && str3 == "0")
                 {
                     //最後一位（分）為0時，加上“整”
                     str5 = str5 + '整';
                 }
             }
             if (num == 0)
             {
                 str5 = "零元整";
             }
             return str5;
         }

         /**/
         /// <summary>
         /// 一個重載，將字符串先轉換成數字在調用CmycurD(decimal num)
         /// </summary>
         /// <param name="num">用戶輸入的金額，字符串形式未轉成decimal</param>
         /// <returns></returns>
         public string CmycurD(string numstr)
         {
             try
             {
                 decimal num = Convert.ToDecimal(numstr);
                 return CmycurD(num);
             }
             catch
             {
                 return "非數字形式！";
             }
         }
     }
 }

調用：

代碼如下：

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