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   源码介绍

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public static class ChinaDate
{
	private static ChineseLunisolarCalendar china = new ChineseLunisolarCalendar();
	private static Hashtable gHoliday = new Hashtable();
	private static Hashtable nHoliday = new Hashtable();
	private static string[] JQ = { "小寒", "大寒", "立春", "雨水", "惊蛰", "春分", "清明", "谷雨", "立夏", "小满", "芒种", "夏至", "小暑", "大暑", "立秋", "处暑", "白露", "秋分", "寒露", "霜降", "立冬", "小雪", "大雪", "冬至" };
	private static int[] JQData = { 0, 21208, 42467, 63836, 85337, 107014, 128867, 150921, 173149, 195551, 218072, 240693, 263343, 285989, 308563, 331033, 353350, 375494, 397447, 419210, 440795, 462224, 483532, 504758 };
	static ChinaDate()
	{
		//公历节日
		gHoliday.Add("0101", "元旦");
		gHoliday.Add("0214", "情人节");
		gHoliday.Add("0305", "雷锋日");
		gHoliday.Add("0308", "妇女节");
		gHoliday.Add("0312", "植树节");
		gHoliday.Add("0315", "消权日");
		gHoliday.Add("0401", "愚人节");
		gHoliday.Add("0501", "劳动节");
		gHoliday.Add("0504", "青年节");
		gHoliday.Add("0601", "儿童节");
		gHoliday.Add("0701", "建党节");
		gHoliday.Add("0801", "建军节");
		gHoliday.Add("0910", "教师节");
		gHoliday.Add("1001", "国庆节");
		gHoliday.Add("1224", "平安夜");
		gHoliday.Add("1225", "圣诞节");

		//农历节日
		nHoliday.Add("0101", "春节");
		nHoliday.Add("0115", "元宵节");
		nHoliday.Add("0505", "端午节");
		nHoliday.Add("0815", "中秋节");
		nHoliday.Add("0909", "重阳节");
		nHoliday.Add("1208", "腊八节");
	}

	/// <summary>
	/// 获取农历
	/// </summary>
	/// <param name="dt"></param>
	/// <returns></returns>
	public static string GetChinaDate(DateTime dt)
	{
		if (dt > china.MaxSupportedDateTime || dt < china.MinSupportedDateTime)
		{
			//日期范围：1901 年 2 月 19 日 - 2101 年 1 月 28 日
			throw new Exception(string.Format("日期超出范围！必须在{0}到{1}之间！", china.MinSupportedDateTime.ToString("yyyy-MM-dd"), china.MaxSupportedDateTime.ToString("yyyy-MM-dd")));
		}
		string str = string.Format("{0} {1}{2}", GetYear(dt), GetMonth(dt), GetDay(dt));
		string strJQ = GetSolarTerm(dt);
		if (strJQ != "")
		{
			str  = " ("   strJQ   ")";
		}
		string strHoliday = GetHoliday(dt);
		if (strHoliday != "")
		{
			str  = " "   strHoliday;
		}
		string strChinaHoliday = GetChinaHoliday(dt);
		if (strChinaHoliday != "")
		{
			str  = " "   strChinaHoliday;
		}

		return str;
	}

	/// <summary>
	/// 获取农历年份
	/// </summary>
	/// <param name="dt"></param>
	/// <returns></returns>
	public static string GetYear(DateTime dt)
	{
		int yearIndex = china.GetSexagenaryYear(dt);
		string yearTG = " 甲乙丙丁戊己庚辛壬癸";
		string yearDZ = " 子丑寅卯辰巳午未申酉戌亥";
		string yearSX = " 鼠牛虎兔龙蛇马羊猴鸡狗猪";
		int year = china.GetYear(dt);
		int yTG = china.GetCelestialStem(yearIndex);
		int yDZ = china.GetTerrestrialBranch(yearIndex);

		string str = string.Format("[{1}]{2}{3}{0}", year, yearSX[yDZ], yearTG[yTG], yearDZ[yDZ]);
		return str;
	}

	/// <summary>
	/// 获取农历月份
	/// </summary>
	/// <param name="dt"></param>
	/// <returns></returns>
	public static string GetMonth(DateTime dt)
	{
		int year = china.GetYear(dt);
		int iMonth = china.GetMonth(dt);
		int leapMonth = china.GetLeapMonth(year);
		bool isLeapMonth = iMonth == leapMonth;
		if (leapMonth != 0 && iMonth >= leapMonth)
		{
			iMonth--;
		}

		string szText = "正二三四五六七八九十";
		string strMonth = isLeapMonth ? "闰" : "";
		if (iMonth <= 10)
		{
			strMonth  = szText.Substring(iMonth - 1, 1);
		}
		else if (iMonth == 11)
		{
			strMonth  = "十一";
		}
		else
		{
			strMonth  = "腊";
		}
		return strMonth   "月";
	}

	/// <summary>
	/// 获取农历日期
	/// </summary>
	/// <param name="dt"></param>
	/// <returns></returns>
	public static string GetDay(DateTime dt)
	{
		int iDay = china.GetDayOfMonth(dt);
		string szText1 = "初十廿三";
		string szText2 = "一二三四五六七八九十";
		string strDay;
		if (iDay == 20)
		{
			strDay = "二十";
		}
		else if (iDay == 30)
		{
			strDay = "三十";
		}
		else
		{
			strDay = szText1.Substring((iDay - 1) / 10, 1);
			strDay = strDay   szText2.Substring((iDay - 1) % 10, 1);
		}
		return strDay;
	}

	/// <summary>
	/// 获取节气
	/// </summary>
	/// <param name="dt"></param>
	/// <returns></returns>
	public static string GetSolarTerm(DateTime dt)
	{
		DateTime dtBase = new DateTime(1900, 1, 6, 2, 5, 0);
		DateTime dtNew;
		double num;
		int y;
		string strReturn = "";

		y = dt.Year;
		for (int i = 1; i <= 24; i  )
		{
			num = 525948.76 * (y - 1900)   JQData[i - 1];
			dtNew = dtBase.AddMinutes(num);
			if (dtNew.DayOfYear == dt.DayOfYear)
			{
				strReturn = JQ[i - 1];
			}
		}

		return strReturn;
	}

	/// <summary>
	/// 获取公历节日
	/// </summary>
	/// <param name="dt"></param>
	/// <returns></returns>
	public static string GetHoliday(DateTime dt)
	{
		string strReturn = "";
		object g = gHoliday[dt.Month.ToString("00")   dt.Day.ToString("00")];
		if (g != null)
		{
			strReturn = g.ToString();
		}

		return strReturn;
	}

	/// <summary>
	/// 获取农历节日
	/// </summary>
	/// <param name="dt"></param>
	/// <returns></returns>
	public static string GetChinaHoliday(DateTime dt)
	{
		string strReturn = "";
		int year = china.GetYear(dt);
		int iMonth = china.GetMonth(dt);
		int leapMonth = china.GetLeapMonth(year);
		int iDay = china.GetDayOfMonth(dt);
		if (china.GetDayOfYear(dt) == china.GetDaysInYear(year))
		{
			strReturn = "除夕";
		}
		else if (leapMonth != iMonth)
		{
			if (leapMonth != 0 && iMonth >= leapMonth)
			{
				iMonth--;
			}
			object n = nHoliday[iMonth.ToString("00")   iDay.ToString("00")];
			if (n != null)
			{
				if (strReturn == "")
				{
					strReturn = n.ToString();
				}
				else
				{
					strReturn  = " "   n.ToString();
				}
			}
		}

		return strReturn;
	}
}