c# 阿拉伯数字转换成英文
最近做了一个外贸程序，里面需要把阿拉伯数字的货币转换成英文，所以写了一下代码，当大家遇到同样的问题的时候 ，可供大家参考
//=====================================================================
// 苏州塔西亚软件有限公司
// 创建人: Aple QQ群：71436018
// 日 期: 2010-04-21
// 描 述: 阿拉伯数字转换成英文
// 修改人:
// 日 期:
// 版 本: 1.0.0.0
//=====================================================================
using System;
using System.Collections.Generic;
using System.Text;
namespace Saibaiwei
{
public class IntoEngish
{
private string[] StrNO = new string[19];
private string[] Unit = new string[8];
private string[] StrTens = new string[9];
#region NumberToString
public string NumberToString(double Number)
{
string Str;
string BeforePoint;
string AfterPoint;
string tmpStr;
int nBit;
string CurString;
int nNumLen;
Init();
Str = Convert.ToString(Math.Round(Number,2));
if (Str.IndexOf(".")==-1)
{
BeforePoint = Str;
AfterPoint = "";
}
else
{
BeforePoint = Str.Substring(0,Str.IndexOf("."));
AfterPoint = Str.Substring(Str.IndexOf(".")+1,Str.Length - Str.IndexOf(".")-1);
}
if (BeforePoint.Length > 12)
{
return null;
}
Str = "";
while (BeforePoint.Length > 0)
{
nNumLen = Len(BeforePoint);
if (nNumLen % 3 == 0)
{
CurString = Left(BeforePoint, 3);
BeforePoint = Right(BeforePoint, nNumLen - 3);
}
else
{
CurString = Left(BeforePoint, (nNumLen % 3));
BeforePoint = Right(BeforePoint, nNumLen - (nNumLen % 3));
}
nBit = Len(BeforePoint) / 3;
tmpStr = DecodeHundred(CurString);
if((BeforePoint == Len(BeforePoint).ToString() || nBit ==0) && Len(CurString) ==3)
{
if (System.Convert.ToInt32(Left(CurString, 1)) != 0 & System.Convert.ToInt32(Right(CurString, 2)) != 0)
{
tmpStr = Left(tmpStr, tmpStr.IndexOf(Unit[3]) + Len(Unit[3])) + Unit[7] + " " + Right(tmpStr, Len(tmpStr) - (tmpStr.IndexOf(Unit[3]) + Len(Unit[3])));
}
else
{
tmpStr = Unit[7] + " " + tmpStr;
}
}
if (nBit == 0)
{
Str = Convert.ToString(Str + " " + tmpStr).Trim();
}
else
{
Str = Convert.ToString(Str + " " + tmpStr + " " + Unit[nBit-1]).Trim();
}
if (Left(Str, 3) == Unit[7])
{
Str = Convert.ToString(Right(Str, Len(Str) - 3)).Trim();
}
if( BeforePoint == Len(BeforePoint).ToString())
{
return "";
}
}
BeforePoint = Str;
if (Len(AfterPoint) > 0)
{
AfterPoint = Unit[5] + " " + DecodeHundred(AfterPoint) + " " + Unit[6];
}
else
{
AfterPoint = Unit[4];
}
return BeforePoint + " " + AfterPoint;
}
#endregion
#region Init
private void Init()
{
if (StrNO[0] != "ONE")
{
StrNO[0] = "ONE";
StrNO[1] = "TWO";
StrNO[2] = "THREE";
StrNO[3] = "FOUR";
StrNO[4] = "FIVE";
StrNO[5] = "SIX";
StrNO[6] = "SEVEN";
StrNO[7] = "EIGHT";
StrNO[8] = "NINE";
StrNO[9] = "TEN";
StrNO[10] = "ELEVEN";
StrNO[11] = "TWELVE";
StrNO[12] = "THIRTEEN";
StrNO[13] = "FOURTEEN";
StrNO[14] = "FIFTEEN";
StrNO[15] = "SIXTEEN";
StrNO[16] = "SEVENTEEN";
StrNO[17] = "EIGHTEEN";
StrNO[18] = "NINETEEN";
StrTens[0] = "TEN";
StrTens[1] = "TWENTY";
StrTens[2] = "THIRTY";
StrTens[3] = "FORTY";
StrTens[4] = "FIFTY";
StrTens[5] = "SIXTY";
StrTens[6] = "SEVENTY";
StrTens[7] = "EIGHTY";
StrTens[8] = "NINETY";
Unit[0] = "THOUSAND";
Unit[1] = "MILLION";
Unit[2] = "BILLION";
Unit[3] = "HUNDRED";
Unit[4] = "ONLY";
Unit[5] = "POINT";
Unit[6] = "CENT";
Unit[7] = " AND";
}
}
#endregion
#region DecodeHundred
private string DecodeHundred(string HundredString)
{
int tmp;
string rtn="";
if( Len(HundredString) > 0 && Len(HundredString) <= 3)
{
switch (Len(HundredString))
{
case 1:
tmp = System.Convert.ToInt32(HundredString);
if (tmp != 0)
{
rtn=StrNO[tmp-1].ToString();
}
break;
case 2:
tmp = System.Convert.ToInt32(HundredString);
if (tmp != 0)
{
if ((tmp < 20))
{
rtn=StrNO[tmp-1].ToString();
}
else
{
if (System.Convert.ToInt32(Right(HundredString, 1)) == 0)
{
rtn=StrTens[Convert.ToInt32(tmp / 10)-1].ToString();
}
else
{
rtn=Convert.ToString(StrTens[Convert.ToInt32(tmp / 10)-1] + "-" + StrNO[System.Convert.ToInt32(Right(HundredString, 1))-1]);
}
}
}
break;
case 3:
if (System.Convert.ToInt32(Left(HundredString, 1)) != 0)
{
rtn=Convert.ToString(StrNO[System.Convert.ToInt32(Left(HundredString, 1))-1] + " " + Unit[3] + " " + DecodeHundred(Right(HundredString, 2)));
}
else
{
rtn=DecodeHundred(Right(HundredString, 2)).ToString();
}
break;
default:
break;
}
}
return rtn;
}
#endregion
#region Left
private string Left(string str,int n)
{
return str.Substring(0,n);
}
#endregion
#region Right
private string Right(string str,int n)
{
return str.Substring(str.Length-n,n);
}
#endregion
#region Len
private int Len(string str)
{
return str.Length;
}
#endregion
}
}