C#中将数字金额转成英文大写金额的函数

<span style="white-space:pre">	</span>/// <summary>
/// 数字转金额大写
/// 调用示例：String desc = CommonUtils.convertEnDes(new Decimal("100.55"), "say", "RMB", "only"));
/// 返回 desc为"say RMB one hundred  dolt five five only"
/// </summary>
/// <returns></returns>
public static String convertEnDes(Object obj, String prefix, String currencyISO, String suffix)
{
if (obj == null)
{
return "";
}
Decimal val = Convert.ToDecimal(obj);
StringBuilder sb = new StringBuilder();
sb.Append(prefix).Append(" ");
String[] amtEnDesc = getAmtEnDesc(val);
sb.Append(currencyISO).Append(" ");
sb.Append(amtEnDesc[0]).Append(" ");

if (amtEnDesc[1].Trim().Length != 0 && !"zero".Equals(amtEnDesc[1].Trim(), StringComparison.OrdinalIgnoreCase))
{
sb.Append("point ").Append(amtEnDesc[1]);
}
sb.Append(" ").Append(suffix);
return sb.ToString().ToUpper();
}

private static String convertLessThanOneThousand(long number)
{
String soFar;
if (number % 100 < 20)
{
soFar = FTConst.numNames[(int)(number % 100)];
number /= 100;
}
else
{
soFar = FTConst.numNames[(int)(number % 10)];
number /= 10;

soFar = FTConst.tensNames[(int)(number % 10)] + soFar;
number /= 10;
}
if (number == 0)
return soFar;
return FTConst.numNames[(int)number] + "hundred " + soFar;
}

//转换整数部分
public static String convert(long number)
{
string[] majorNames = { " ", "thousand ",
"million ", "billion ", "trillion ", "quadrillion ",
"quintillion " };
if (number == 0)
{
return "zero ";
}
String prefix = " ";
if (number < 0)
{
number = -number;
prefix = "negative ";
}
String soFar = " ";
int place = 0;
do
{
long n = (number % 1000);
if (n != 0)
{
String s = convertLessThanOneThousand(n);
soFar = s + majorNames[place] + soFar;
}
place++;
number /= 1000;
} while (number > 0);
return (prefix + soFar).Trim();
}

//转换小数部分
public static String convertDot(string number)
{
if (number.Trim().Length == 0)
{
return " ";
}
String soFar = " ";
long c = Convert.ToInt64(number);
do
{
long n = (c % 10);
if (n != 0)
{
String s = convertLessThanOneThousand(n);
soFar = s + soFar;
}

c /= 10;
} while (c > 0);
return soFar.Trim();
}

private static String[] getAmtEnDesc(Decimal val)
{
String[] ret = new String[2];
String valDes = val.ToString();
String[] valSplit = valDes.Split('.');
long part = Convert.ToInt64(valSplit[0]);
ret[0] = convert(part);
try
{
ret[1] = convertDot(valSplit[1]);
}
catch
{
ret[1] = "";
}
return ret;
}