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C#实现的将数字金额转换为中文大写金额的辅助类，能处理较大数额。
public static class NumberToChineseCapitalHelper
{
private static readonly char[] ChineseNumbers = { '零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖' };
private static readonly string[] Units = { "", "拾", "佰", "仟" };
private static readonly string[] BigUnits = { "", "万", "亿", "兆" };
public static string ConvertToChineseCapital(decimal amount)
{
if (amount == 0m)
return "零元整";
if (amount >= 10000000000000000m)
throw new ArgumentOutOfRangeException(nameof(amount), "金额超出处理范围。");
StringBuilder builder = new StringBuilder();
long integralPart = (long)Math.Floor(amount);
int fractionalPart = (int)Math.Round((amount - integralPart) * 100);
if (fractionalPart < 10)
{
if (fractionalPart > 0)
builder.Append(ChineseNumbers[fractionalPart] + "分");
if (fractionalPart == 0 || integralPart > 0)
builder.Insert(0, "零角");
}
else
{
if (fractionalPart % 10 > 0)
builder.Append(ChineseNumbers[fractionalPart % 10] + "分");
if (fractionalPart / 10 > 0)
builder.Insert(0, ChineseNumbers[fractionalPart / 10] + "角");
}
if (integralPart == 0)
{
builder.Insert(0, "零元");
}
else
{
builder.Insert(0, "元");
bool zeroFlag = false;
for (int i = 0; integralPart > 0; i++)
{
string temp = "";
int unitGroup = (int)(integralPart % 10000);
if (unitGroup > 0)
{
for (int j = 0; j < 4; j++)
{
int num = unitGroup % 10;
if (num > 0)
{
temp = ChineseNumbers[num] + Units[j] + temp;
zeroFlag = true;
}
else if (zeroFlag)
{
temp = "零" + temp;
zeroFlag = false;
}
unitGroup /= 10;
}
temp += BigUnits[i];
}
else if (zeroFlag)
{
temp = "零" + temp;
zeroFlag = false;
}
builder.Insert(0, temp);
integralPart /= 10000;
}
}
return builder.ToString().TrimStart('零');
}
}
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