[C#] 숫자금액->한글로 변환

static public string Number2Hangle(long lngNumber)
{
	bool UseDecimal = false;
	string Sign = "";
	int i = 0;
	int Level = 0;

	string[] NumberChar = new string[] { "", "일", "이", "삼", "사", "오", "육", "칠", "팔", "구" };
	string[] LevelChar = new string[] { "", "십", "백", "천" };
	string[] DecimalChar = new string[] { "", "만", "억", "조", "경" };

	string strValue = string.Format("{0}", lngNumber);
	string NumToKorea = Sign;
	UseDecimal = false;

	for (i = 0; i < strValue.Length; i++)
	{
		Level = strValue.Length - i;
		if (strValue.Substring(i, 1) != "0")
		{
			UseDecimal = true;
			if (((Level - 1) % 4) == 0)
			{
				NumToKorea = NumToKorea + NumberChar[int.Parse(strValue.Substring(i, 1))] + DecimalChar[(Level - 1) / 4];
				UseDecimal = false;
			}
			else
			{
				if (strValue.Substring(i, 1) == "1")
				{
					NumToKorea = NumToKorea + LevelChar[(Level - 1) % 4];
				}
				else
				{
					NumToKorea = NumToKorea + NumberChar[int.Parse(strValue.Substring(i, 1))] + LevelChar[(Level - 1) % 4];
				}
			}
		}
		else
		{
			if ((Level % 4 == 0) && UseDecimal)
			{
				NumToKorea = NumToKorea + DecimalChar[Level / 4];
				UseDecimal = false;
			}
		}
	}
	return NumToKorea;
}