c#数字转金额：c#实现数字转换成大写金额的代码

// 例如：(new Money(200)).ToString() == "贰佰元"
namespace Skyiv.Util {
using System.Text;
class Test {
static void Main() {
for (;;) {
System.Console.Write("金额: ");
string s = System.Console.ReadLine();
decimal m;
try {
m = decimal.Parse(s);
} catch {
break;
}
System.Console.WriteLine("大写: " + new Money(m));
}
}
}
// 该类重载的 ToString() 方法返回的是大写金额字符串
class Money {
public string Yuan = "元"; // “元”，可以改为“圆”、“卢布”之类
public string Jiao = "角"; // “角”，可以改为“拾”
public string Fen = "分"; // “分”，可以改为“美分”之类
static string Digit = "零壹贰叁肆伍陆柒捌玖"; // 大写数字
bool isAllZero = true; // 片段内是否全零
bool isPreZero = true; // 低一位数字是否是零
bool Overflow = false; // 溢出标志
long money100; // 金额*100，即以“分”为单位的金额
long value; // money100的绝对值
StringBuilder sb = new StringBuilder(); // 大写金额字符串，逆序
// 只读属性: "零元"
public string ZeroString {
get {
return Digit[0] + Yuan;
}
}
// 构造函数
public Money(decimal money) {
try {
money100 = (long)(money * 100m);
} catch {
Overflow = true;
}
if (money100 == long.MinValue) Overflow = true;
}
// 重载 ToString() 方法，返回大写金额字符串
public override string ToString() {
if (Overflow) return "金额超出范围";
if (money100 == 0) return ZeroString;
string[] Unit = {
Yuan,
"万",
"亿",
"万",
"亿亿"
};
value = System.Math.Abs(money100);
ParseSection(true);
for (int i = 0; i < Unit.Length && value > 0; i++) {
if (isPreZero && !isAllZero) sb.Append(Digit[0]);
if (i == 4 && sb.ToString().EndsWith(Unit[2])) sb.Remove(sb.Length - Unit[2].Length, Unit[2].Length);
sb.Append(Unit[i]);
ParseSection(false);
if ((i % 2) == 1 && isAllZero) sb.Remove(sb.Length - Unit[i].Length, Unit[i].Length);
}
if (money100 < 0) sb.Append("负");
return Reverse();
}
// 解析“片段”: “角分(2位)”或“万以内的一段(4位)”
void ParseSection(bool isJiaoFen) {
string[] Unit = isJiaoFen ? new string[] {
Fen,
Jiao
}: new string[] {
"",
"拾",
"佰",
"仟"
};
isAllZero = true;
for (int i = 0; i < Unit.Length && value > 0; i++) {
int d = (int)(value % 10);
if (d != 0) {
if (isPreZero && !isAllZero) sb.Append(Digit[0]);
sb.AppendFormat("{0}{1}", Unit[i], Digit[d]);
isAllZero = false;
}
isPreZero = (d == 0);
value /= 10;
}
}
// 反转字符串
string Reverse() {
StringBuilder sbReversed = new StringBuilder();
for (int i = sb.Length - 1; i >= 0; i--) sbReversed.Append(sb[i]);
return sbReversed.ToString();
}
}
}

using System;
 
namespace Test
{
/// <summary>
/// Rmb 的摘要说明。
/// </summary>
public class Rmb
{
/// <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 static 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 = "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
{ 
//该位是万亿，亿，万，元位等关键位
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 + '整';
}
}
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 static string CmycurD(string numstr)
{
try
{
decimal num = Convert.ToDecimal(numstr);
return CmycurD(num);
}
catch
{
return "非数字形式！";
}
}
}
}