ASP.NET C# 货币转换函数 中文大写金额 英文金额

// 静态中文转换方法 String GetCnString(String MoneyString)
// 最大转化金额 9999999999999999.99 （16位整数位，2位小数位）
// 方法返回值 转换成功则返回非零长字串,否则返回零长字串

// 静态英文转换方法 String GetEnString(String MoneyString)
// 最大转化金额 999999999999999.99 （15位整数位，2位小数位）
// 方法返回值 转换成功则返回非零长字串,否则返回零长字串

using System;

public class Money
{

private static readonly String cnNumber = "零壹贰叁肆伍陆柒捌玖";
private static readonly String cnUnit = "分角元拾佰仟万拾佰仟亿拾佰仟兆拾佰仟";

private static readonly String[] enSmallNumber = { "", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE", "TEN", "ELEVEN", "TWELVE", "THIRTEEN", "FOURTEEN", "FIFTEEN", "SIXTEEN", "SEVENTEEN", "EIGHTEEN", "NINETEEN" };
private static readonly String[] enLargeNumber = { "TWENTY", "THIRTY", "FORTY", "FIFTY", "SIXTY", "SEVENTY", "EIGHTY", "NINETY" };
private static readonly String[] enUnit = { "", "THOUSAND", "MILLION", "BILLION", "TRILLION" };

// 以下是货币金额中文大写转换方法
public static String GetCnString(String MoneyString)
{
String[] tmpString = MoneyString.Split('.');
String intString = MoneyString; // 默认为整数
String decString = ""; // 保存小数部分字串
String rmbCapital = ""; // 保存中文大写字串
int k;
int j;
int n;

if (tmpString.Length > 1)
{
intString = tmpString[0]; // 取整数部分
decString = tmpString[1]; // 取小数部分
}
decString += "00";
decString = decString.Substring(0, 2); // 保留两位小数位
intString += decString;

try
{
k = intString.Length - 1;
if (k > 0 && k < 18)
{
for (int i = 0; i <= k; i++)
{
j = (int)intString[i] - 48;
// rmbCapital = rmbCapital + cnNumber[j] + cnUnit[k-i]; // 供调试用的直接转换
n = i + 1 >= k ? (int)intString[k] - 48 : (int)intString[i + 1] - 48; // 等效于 if( ){ }else{ }
if (j == 0)
{
if (k - i == 2 || k - i == 6 || k - i == 10 || k - i == 14)
{
rmbCapital += cnUnit[k - i];
}
else
{
if (n != 0)
{
rmbCapital += cnNumber[j];
}
}
}
else
{
rmbCapital = rmbCapital + cnNumber[j] + cnUnit[k - i];
}
}

rmbCapital = rmbCapital.Replace("兆亿万", "兆");
rmbCapital = rmbCapital.Replace("兆亿", "兆");
rmbCapital = rmbCapital.Replace("亿万", "亿");
rmbCapital = rmbCapital.TrimStart('元');
rmbCapital = rmbCapital.TrimStart('零');

return rmbCapital;
}
else
{
return ""; // 超出转换范围时，返回零长字串
}
}
catch
{
return ""; // 含有非数值字符时，返回零长字串
}
}

// 以下是货币金额英文大写转换方法
public static String GetEnString(String MoneyString)
{
String[] tmpString = MoneyString.Split('.');
String intString = MoneyString; // 默认为整数
String decString = ""; // 保存小数部分字串
String engCapital = ""; // 保存英文大写字串
String strBuff1;
String strBuff2;
String strBuff3;
int curPoint;
int i1;
int i2;
int i3;
int k;
int n;

if (tmpString.Length > 1)
{
intString = tmpString[0]; // 取整数部分
decString = tmpString[1]; // 取小数部分
}
decString += "00";
decString = decString.Substring(0, 2); // 保留两位小数位

try
{
// 以下处理整数部分
curPoint = intString.Length - 1;
if (curPoint >= 0 && curPoint < 15)
{
k = 0;
while (curPoint >= 0)
{
strBuff1 = "";
strBuff2 = "";
strBuff3 = "";
if (curPoint >= 2)
{
n = int.Parse(intString.Substring(curPoint - 2, 3));
if (n != 0)
{
i1 = n / 100; // 取佰位数值
i2 = (n - i1 * 100) / 10; // 取拾位数值
i3 = n - i1 * 100 - i2 * 10; // 取个位数值
if (i1 != 0)
{
strBuff1 = enSmallNumber[i1] + " HUNDRED ";
}
if (i2 != 0)
{
if (i2 == 1)
{
strBuff2 = enSmallNumber[i2 * 10 + i3] + " ";
}
else
{
strBuff2 = enLargeNumber[i2 - 2] + " ";
if (i3 != 0)
{
strBuff3 = enSmallNumber[i3] + " ";
}
}
}
else
{
if (i3 != 0)
{
strBuff3 = enSmallNumber[i3] + " ";
}
}
engCapital = strBuff1 + strBuff2 + strBuff3 + enUnit[k] + " " + engCapital;
}
}
else
{
n = int.Parse(intString.Substring(0, curPoint + 1));
if (n != 0)
{
i2 = n / 10; // 取拾位数值
i3 = n - i2 * 10; // 取个位数值
if (i2 != 0)
{
if (i2 == 1)
{
strBuff2 = enSmallNumber[i2 * 10 + i3] + " ";
}
else
{
strBuff2 = enLargeNumber[i2 - 2] + " ";
if (i3 != 0)
{
strBuff3 = enSmallNumber[i3] + " ";
}
}
}
else
{
if (i3 != 0)
{
strBuff3 = enSmallNumber[i3] + " ";
}
}
engCapital = strBuff2 + strBuff3 + enUnit[k] + " " + engCapital;
}
}

++k;
curPoint -= 3;
}
engCapital = engCapital.TrimEnd();
}

// 以下处理小数部分
strBuff2 = "";
strBuff3 = "";
n = int.Parse(decString);
if (n != 0)
{
i2 = n / 10; // 取拾位数值
i3 = n - i2 * 10; // 取个位数值
if (i2 != 0)
{
if (i2 == 1)
{
strBuff2 = enSmallNumber[i2 * 10 + i3] + " ";
}
else
{
strBuff2 = enLargeNumber[i2 - 2] + " ";
if (i3 != 0)
{
strBuff3 = enSmallNumber[i3] + " ";
}
}
}
else
{
if (i3 != 0)
{
strBuff3 = enSmallNumber[i3] + " ";
}
}

// 将小数字串追加到整数字串后
if (engCapital.Length > 0)
{
engCapital = engCapital + " AND CENTS " + strBuff2 + strBuff3; // 有整数部分时
}
else
{
engCapital = "CENTS " + strBuff2 + strBuff3; // 只有小数部分时
}
}

engCapital = engCapital.TrimEnd();
return engCapital;
}
catch
{
return ""; // 含非数字字符时，返回零长字串
}
}
}