c#中将金额转为大写金额

调用：

decimal totalAmount=12.32;

ConvertMoneyHelper.ConvertToMoney(totalAmount.ToString());

封装的ConvertMoneyHelper类:

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

namespace BM.ERP.Common
{
/// <summary>
/// 金额转换类
/// </summary>
public class ConvertMoneyHelper
{
public static string ConvertToMoney(string str)
{
if (!IsPositveDecimal(str))
return "输入的不是正数字！";
if (Double.Parse(str) > 999999999999.99)
return "数字太大，无法换算，请输入一万亿元以下的金额";
char[] ch = new char[1];

ch[0] = '.'; //小数点

string[] splitstr = null; //定义按小数点分割后的字符串数组

splitstr = str.Split(ch[0]);//按小数点分割字符串

if (splitstr.Length == 1) //只有整数部分

return ConvertData(str) + "圆整";

else //有小数部分
{
string rstr;

rstr = ConvertData(splitstr[0]) + "圆";//转换整数部分

rstr += ConvertXiaoShu(splitstr[1]);//转换小数部分

return rstr;
}
}

///
/// 判断是否是正数字字符串
///
/// 判断字符串
/// 如果是数字，返回true，否则返回false
public static bool IsPositveDecimal(string str)
{
Decimal d;
try
{
d = Decimal.Parse(str);
}
catch (Exception)
{
return false;
}
if (d > 0)
return true;
else
return false;
}

///
/// 转换数字（整数）
///
/// 需要转换的整数数字字符串
/// 转换成中文大写后的字符串
public static string ConvertData(string str)
{
string tmpstr = "";
string rstr = "";
int strlen = str.Length;

if (strlen <= 4)//数字长度小于四位
{
rstr = ConvertDigit(str);
}
else
{
if (strlen <= 8)//数字长度大于四位，小于八位
{
tmpstr = str.Substring(strlen - 4, 4);//先截取最后四位数字
rstr = ConvertDigit(tmpstr);//转换最后四位数字
tmpstr = str.Substring(0, strlen - 4);//截取其余数字

//将两次转换的数字加上萬后相连接
rstr = String.Concat(ConvertDigit(tmpstr) + "萬", rstr);
rstr = rstr.Replace("零萬", "萬");
rstr = rstr.Replace("零零", "零");
}
else
if (strlen <= 12)//数字长度大于八位，小于十二位
{
tmpstr = str.Substring(strlen - 4, 4);//先截取最后四位数字

rstr = ConvertDigit(tmpstr);//转换最后四位数字

tmpstr = str.Substring(strlen - 8, 4);//再截取四位数字

rstr = String.Concat(ConvertDigit(tmpstr) + "萬", rstr);

tmpstr = str.Substring(0, strlen - 8);

rstr = String.Concat(ConvertDigit(tmpstr) + "億", rstr);

rstr = rstr.Replace("零億", "億");

rstr = rstr.Replace("零萬", "零");

rstr = rstr.Replace("零零", "零");

rstr = rstr.Replace("零零", "零");
}
}

strlen = rstr.Length;

if (strlen >= 2)
{
switch (rstr.Substring(strlen - 2, 2))
{
case "佰零": rstr = rstr.Substring(0, strlen - 2) + "佰"; break;
case "仟零": rstr = rstr.Substring(0, strlen - 2) + "仟"; break;
case "萬零": rstr = rstr.Substring(0, strlen - 2) + "萬"; break;
case "億零": rstr = rstr.Substring(0, strlen - 2) + "億"; break;
}
}
return rstr;
}

///
/// 转换数字（小数部分）
///
/// 需要转换的小数部分数字字符串
/// 转换成中文大写后的字符串
public static string ConvertXiaoShu(string str)
{
int strlen = str.Length;

string rstr;

if (strlen == 1)
{
rstr = ConvertChinese(str) + "角";
return rstr;
}
else
{
string tmpstr = str.Substring(0, 1);
rstr = ConvertChinese(tmpstr) + "角";
tmpstr = str.Substring(1, 1);
rstr += ConvertChinese(tmpstr) + "分";
rstr = rstr.Replace("零分", "");
rstr = rstr.Replace("零角", "");
return rstr;
}
}

///
/// 转换数字
///
/// 转换的字符串（四位以内）
///
public static string ConvertDigit(string str)
{
int strlen = str.Length;
string rstr = "";
switch (strlen)
{
case 1: rstr = ConvertChinese(str); break;
case 2: rstr = Convert2Digit(str); break;
case 3: rstr = Convert3Digit(str); break;
case 4: rstr = Convert4Digit(str); break;
}

rstr = rstr.Replace("拾零", "拾");
strlen = rstr.Length;

return rstr;
}

///
/// 转换四位数字
///
public static string Convert4Digit(string str)
{
string str1 = str.Substring(0, 1);

string str2 = str.Substring(1, 1);

string str3 = str.Substring(2, 1);

string str4 = str.Substring(3, 1);

string rstring = "";

rstring += ConvertChinese(str1) + "仟";

rstring += ConvertChinese(str2) + "佰";

rstring += ConvertChinese(str3) + "拾";

rstring += ConvertChinese(str4);

rstring = rstring.Replace("零仟", "零");

rstring = rstring.Replace("零佰", "零");

rstring = rstring.Replace("零拾", "零");

rstring = rstring.Replace("零零", "零");

rstring = rstring.Replace("零零", "零");

rstring = rstring.Replace("零零", "零");

return rstring;
}

///
/// 转换三位数字
///
public static string Convert3Digit(string str)
{
string str1 = str.Substring(0, 1);

string str2 = str.Substring(1, 1);

string str3 = str.Substring(2, 1);

string rstring = "";

rstring += ConvertChinese(str1) + "佰";

rstring += ConvertChinese(str2) + "拾";

rstring += ConvertChinese(str3);

rstring = rstring.Replace("零佰", "零");

rstring = rstring.Replace("零拾", "零");

rstring = rstring.Replace("零零", "零");

rstring = rstring.Replace("零零", "零");

return rstring;
}

///
/// 转换二位数字
///
public static string Convert2Digit(string str)
{
string str1 = str.Substring(0, 1);

string str2 = str.Substring(1, 1);

string rstring = "";

rstring += ConvertChinese(str1) + "拾";

rstring += ConvertChinese(str2);

rstring = rstring.Replace("零拾", "零");

rstring = rstring.Replace("零零", "零");

return rstring;
}

///
/// 将一位数字转换成中文大写数字
///
public static string ConvertChinese(string str)
{
//"零壹贰叁肆伍陆柒捌玖拾佰仟萬億圆整角分"

string cstr = "";

switch (str)
{

case "0": cstr = "零"; break;

case "1": cstr = "壹"; break;

case "2": cstr = "贰"; break;

case "3": cstr = "叁"; break;

case "4": cstr = "肆"; break;

case "5": cstr = "伍"; break;

case "6": cstr = "陆"; break;

case "7": cstr = "柒"; break;

case "8": cstr = "捌"; break;

case "9": cstr = "玖"; break;
}

return (cstr);

}
}
}