using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
public class BLDateHelper
{
#region 年份，返回ArrayList类型
public ArrayList Year()
{
ArrayList arraylist = new ArrayList(210);
for (int i = 1901; i < 2101; i++)
{
arraylist.Add(i);
}
return arraylist;
}
#endregion
#region 公历月份，返回ArrayList类型
public ArrayList Month()
{
ArrayList arraylist = new ArrayList();
for (int i = 1; i <= 12; i++)
{
arraylist.Add(i);
}
return arraylist;
}
#endregion
#region 根据年月返回公历当月的天数
public int GetMonthCount(int year, int month)
{
int count = DateTime.DaysInMonth(year, month);
return count;
}
#endregion
#region 根据年月返回当年当月第一天星期几
//2000-1-2为周日
//返回以0为周日
public int FirstDayOfWeekOfMonth(int year, int month)
{
DateTime jztime = new DateTime(2000, 1, 2);
DateTime newtime = new DateTime(year, month, 1);
TimeSpan ts;
int dayofweek = 0;
if (jztime < newtime)
{
ts = newtime - jztime;
dayofweek = ts.Days % 7;
return dayofweek;
}
else
{
ts = jztime - newtime;
dayofweek = (ts.Days) % 7;
return (7 - dayofweek) % 7;
}
}
#endregion
#region 根据年月日算星期几,返回string类型,方法二：(简捷)以一个基准日期，两日期相减算法
//方法三
//以一个基准日期，两日期相减算法
//根据年月日算星期几,返回string类型
//2000-1-1为星期六
public string GetWeekOfDay(int year, int month, int day)
{
//int runnian=0;
DateTime jztime = new DateTime(2000, 1, 1);
DateTime newtime = new DateTime(year, month, day);
TimeSpan chatime;
int week;
string weekstr = "";
if (jztime <= newtime)
{
chatime = newtime - jztime;
week = (chatime.Days + 1) % 7;
switch (week)
{
case 1:
weekstr = "星期六";
break;
case 2:
weekstr = "星期日";
break;
case 3:
weekstr = "星期一";
break;
case 4:
weekstr = "星期二";
break;
case 5:
weekstr = "星期三";
break;
case 6:
weekstr = "星期四";
break;
case 0:
weekstr = "星期五";
break;
}
}
else
{
chatime = jztime - newtime;
week = (chatime.Days + 1) % 7;
switch (week)
{
case 1:
weekstr = "星期六";
break;
case 2:
weekstr = "星期五";
break;
case 3:
weekstr = "星期四";
break;
case 4:
weekstr = "星期三";
break;
case 5:
weekstr = "星期二";
break;
case 6:
weekstr = "星期一";
break;
case 0:
weekstr = "星期日";
break;
}
}
return weekstr;
}
#endregion
#region 根据公历日期返回农历日
public string GetNLMonth(int year, int month, int day)
{
string[] monthname = { "正月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "腊月" };
ChineseLunisolarCalendar calendar = new ChineseLunisolarCalendar();
DateTime datetime = new DateTime(year, month, day);
int nlyear = calendar.GetYear(datetime);
int nlmonth = calendar.GetMonth(datetime);
//判断是否有闰月 ,leap=0即没有闰月
int leapmonth = calendar.GetLeapMonth(nlyear);
if (leapmonth > 0)
{
if (leapmonth <= nlmonth)
{
nlmonth--;
}
}
return monthname[nlmonth - 1].ToString();
}
#endregion
#region 根据公历日期返回农历日
public string GetNLDay(int year, int month, int day)
{
string[] nstr1 = { "一", "二", "三", "四", "五", "六", "七", "八", "九", "十" };
string[] nstr2 = { "初", "十", "廿", "卅" };
string[] monthname = { "正月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "腊月" };
ChineseLunisolarCalendar calendar = new ChineseLunisolarCalendar();
DateTime datetime = new DateTime(year, month, day);
int nlyear = calendar.GetYear(datetime);
int nlmonth = calendar.GetMonth(datetime);
int nlday = calendar.GetDayOfMonth(datetime);
//判断是否有闰月 ,leap=0即没有闰月
int leapmonth = calendar.GetLeapMonth(nlyear);
if (leapmonth > 0)
{
if (leapmonth <= nlmonth)
{
nlmonth--;
}
}
if (nlday == 1)
{
return monthname[nlmonth - 1].ToString();
}
else
{
if (nlday > 1 && nlday <= 10)
{
return nstr2[0].ToString() + nstr1[nlday - 1].ToString();
}
else if (nlday > 10 && nlday < 20)
{
return nstr2[1].ToString() + nstr1[nlday % 10 - 1].ToString();
}
else if (nlday == 20)
{
return "二十";
}
else if (nlday > 20 && nlday < 30)
{
return nstr2[2].ToString() + nstr1[nlday % 10 - 1].ToString();
}
else if (nlday == 30)
{
return "三十";
}
else
{
return "卅一";
}
}
}
#endregion
#region 阳历转化为农历，返回string类型
//ChineseLunisolarCalendar类能实现的日期为1901-2-19——2101-1-28
//阳历转化为农历，返回string类型
//以公元前2997年为中国历史上第一个甲子年
public string GetNLYear(int year, int month, int day)
{
string datestr = "";
string[] gan = { "甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸" };
string[] zhi = { "子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥" };
string[] shengxiao = { "鼠", "牛", "虎", "免", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪" };
ChineseLunisolarCalendar calendar = new ChineseLunisolarCalendar();
DateTime date = new DateTime(year, month, day);
int nlyear = calendar.GetYear(date);
int nlmonth = calendar.GetMonth(date);
int nlday = calendar.GetDayOfMonth(date);
//判断是否有闰月 ,leap=0即没有闰月
int leapmonth = calendar.GetLeapMonth(nlyear);
if (leapmonth > 0)
{
if (leapmonth <= nlmonth)
{
nlmonth--;
}
}
//确定年份,基准1804为甲子年,鼠年
//天干年
string zy = "";
//地支年
string dy = "";
//生肖年
string sxnian = "";
if (nlyear > 3)
{
int zhiyear = (nlyear - 4) % 10;
int diyear = (nlyear - 4) % 12;
zy = gan[zhiyear];
dy = zhi[diyear];
sxnian = shengxiao[diyear];
}
//转化的最终农历年
datestr = zy + dy + "(" + nlyear + ")" + "年" + " 生肖:" + sxnian;
return datestr;
}
#endregion
public string GetNL(int year, int month, int day)
{
string nlDay = GetNLDay(year, month, day);
string nlMonth = GetNLMonth(year, month, day);
string nlYear = GetNLYear(year, month, day);
return nlYear + " " + nlMonth + " " + nlDay;
}
}
}
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