c#中国农历时间类

原来还准备自己写算法，并研究农历规则。发现那太难和麻烦了，光是农历的推算那就我等专门研究历法的人一下搞懂的。后来发现。ＮＥＴ类库也提供一些基础的农历类System.Globalization.ChineseLunisolarCalendar。我改装了一下如DateTime时间形式。代码如下。实现了 公历农历转换的功能。但是只能算到1900~2100年之间的。基本够日常使用了。源代码如下。


using System;


using System.Collections.Generic;


using System.Text;




namespace System




...{




/**//// <summary>


/// 中国常用农历日期时间类


/// zj53hao@qq.com http://hi.csdn.net/zj53hao

/// </summary>


class ChinaDateTime




...{


private int year, month, dayOfMonth;


private bool isLeap;


public DateTime time;






/**//// <summary>


/// 获取当前日期的农历年


/// </summary>


public int Year




...{




get ...{ return year; }


}






/**//// <summary>


/// 获取当前日期的农历月份


/// </summary>


public int Month




...{




get ...{ return month; }


}






/**//// <summary>


/// 获取当前日期的农历月中天数


/// </summary>


public int DayOfMonth




...{




get ...{ return dayOfMonth; }


}






/**//// <summary>


/// 获取当前日期是否为闰月中的日期


/// </summary>


public bool IsLeap




...{




get ...{ return isLeap; }


}




System.Globalization.ChineseLunisolarCalendar cc;




/**//// <summary>


/// 返回指定公历日期的阴历时间


/// </summary>


/// <param name="time"></param>


public ChinaDateTime(DateTime time)




...{


cc = new System.Globalization.ChineseLunisolarCalendar();


if (time > cc.MaxSupportedDateTime || time < cc.MinSupportedDateTime)


throw new Exception("参数日期时间不在支持的范围内,支持范围：" + cc.MinSupportedDateTime.ToShortDateString()+"到"+cc.MaxSupportedDateTime.ToShortDateString());


year = cc.GetYear(time);


month = cc.GetMonth(time);


dayOfMonth = cc.GetDayOfMonth(time);


isLeap = cc.IsLeapMonth(year, month);


if (isLeap) month -= 1;


this.time = time;




}






/**//// <summary>


/// 返回当前日前的农历日期。


/// </summary>


public static ChinaDateTime Now




...{




get ...{ return new ChinaDateTime(DateTime.Now); }


}






/**//// <summary>


/// 返回指定农历年，月，日，是否为闰月的农历日期时间


/// </summary>


/// <param name="Year"></param>


/// <param name="Month"></param>


/// <param name="DayOfMonth"></param>


/// <param name="IsLeap"></param>


public ChinaDateTime(int Year, int Month, int DayOfMonth, bool IsLeap)




...{


if (Year >= cc.MaxSupportedDateTime.Year || Year <= cc.MinSupportedDateTime.Year)


throw new Exception("参数年份时间不在支持的范围内,支持范围：" + cc.MinSupportedDateTime.ToShortDateString() + "到" + cc.MaxSupportedDateTime.ToShortDateString());




if (Month < 1 || Month > 12)


throw new Exception("月份必须在1~12范围");


cc = new System.Globalization.ChineseLunisolarCalendar();


if(cc.GetLeapMonth(Year)!=Month&&IsLeap)


throw new Exception("指定的月份不是当年的闰月");


if (cc.GetDaysInMonth(Year, IsLeap ? Month + 1 : Month) < DayOfMonth || DayOfMonth < 1)


throw new Exception("指定的月中的天数不在当前月天数有效范围");


year = Year;


month = Month;


dayOfMonth = DayOfMonth;


isLeap = IsLeap;


time = DateTime.Now;


}






/**//// <summary>


/// 获取当前农历日期的公历时间


/// </summary>


public DateTime ToDateTime()




...{


return cc.ToDateTime(year, isLeap ? month + 1 : month, dayOfMonth, time.Hour, time.Minute, time.Second, time.Millisecond);


}






/**//// <summary>


/// 获取指定农历时间对应的公历时间


/// </summary>


/// <param name="CnTime"></param>


/// <returns></returns>


public static DateTime ToDateTime(ChinaDateTime CnTime)




...{


return CnTime.ToDateTime();


}






/**//// <summary>


/// 获取指定公历时间转换为农历时间


/// </summary>


/// <param name="Time"></param>


/// <returns></returns>


public static ChinaDateTime ToChinaDateTime(DateTime Time)




...{


return new ChinaDateTime(Time);


}






/**//// <summary>


/// 返回该农历日期的字符串


/// </summary>


/// <returns></returns>


public override string ToString()




...{


return "农历" + year.ToString() + "年" + (isLeap?"润":"")+month.ToString()+"月"+dayOfMonth.ToString()+"日";


}




}


}