/// <summary>
/// Conver decimal to different formal string
/// </summary>
/// <param name="value">decimal value</param>
/// <param name="format"></param>
/// <param name="decimalNumber">保留的小數位數</param>
/// <returns></returns>
public static string ToString(this decimal value, CurrencyFormat format, int decimalNumber = 2)
{
switch (format)
{
case CurrencyFormat.Chinese:
//ref http://blog.darkthread.net/post-2009-12-23-chinese-number-char.aspx
var t = EastAsiaNumericFormatter.FormatWithCulture("L", value, null, _twCulture);
//修正EastAsiaNumericFormatter.FormatWithCulture出現"三百十"之問題，修正為三百一十的慣用寫法
var res = _regFixOne.Replace(t, m => "壹");
//拾萬需補為壹拾萬
if (res.StartsWith("拾"))
{
res = "壹" + res;
}
return(res);
case CurrencyFormat.Comma:
return(Math.Truncate(value).ToString("N")); //去小數
case CurrencyFormat.CommaReservedDecimalNumber:
return(Math.Round(value, decimalNumber).ToString($"N{ decimalNumber}"));
default:
return(value.ToString());
}
}
/// <summary>
/// 修正EastAsiaNumericFormatter.FormatWithCulture出現"三百十"之問題，
/// 本函数会将其修正为三百一十的惯用写法
/// </summary>
/// <param name="n">要转换的数字</param>
/// <param name="moneyChar">
/// 是否使用金额大写，true时使用"一贰参肆...", false时则为"一二三四..."
/// </param>
/// <returns>转为中文大写的数字</returns>
public static string GetChineseToNumber(decimal n, bool moneyChar)
{
var t = EastAsiaNumericFormatter.FormatWithCulture(moneyChar ? "L" : "Ln", n, null,
new CultureInfo("zh-TW"));
var pattern = moneyChar ? "[^壹貳參肆伍陸柒捌玖]拾" : "[^一二三四五六七八九]十";
var one = moneyChar ? "壹" : "一";
return(Regex.Replace(t, pattern, m => m.Value.Substring(0, 1) + one + m.Value.Substring(1)));
}
internal static string InternalConvert(object arg, NumericConversionDirection direction)
{
string format = GetFormatString(direction);
return(EastAsiaNumericFormatter.FormatWithCulture(format, arg, null, _culture));
}
static void Main(string[] args)
{
Console.WriteLine("The representation for number 123.45 in Japanese Standard format is " + EastAsiaNumericFormatter.FormatWithCulture("L", 123.45, null, new CultureInfo("ja")));
}
