/// <summary>
/// 農曆轉西曆。
/// </summary>
/// <param name="value">欲進行轉換的日期。</param>
public static string LunarDateToWestDate(DateTime value)
{
var oLCalendar = new TaiwanLunisolarCalendar();
var isLeap = oLCalendar.IsLeapYear(value.Year - 1911);
return(oLCalendar.ToDateTime(value.Year - 1911, isLeap ? value.Month + 1 : value.Month, value.Day, 0, 0, 0, 0).ToString("yyyyMMdd"));
}
public void IsLeapYear()
{
//Assert.IsFalse (cn.IsLeapYear (1901), "#cn1901");
//Assert.AreEqual (0, cn.GetSexagenaryYear (cn.MinSupportedDateTime), "#60cn1");
for (int i = 0; i < 60; i++)
{
Assert.AreEqual(leapYears [i % 19], cn.IsLeapYear(2000 + i), "cn" + i);
}
for (int i = 0; i < 48; i++) // only 1-to-61 are allowed
{
Assert.AreEqual(leapYears [i % 19], jp.IsLeapYear(12 + i, 4), "jp" + i);
}
for (int i = 0; i < 50; i++)
{
Assert.AreEqual(leapYears [i % 19], tw.IsLeapYear(89 + i), "tw" + i);
}
for (int i = 0; i < 50; i++)
{
Assert.AreEqual(leapYears [i % 19], kr.IsLeapYear(2000 + i), "kr" + i);
}
// 2033 Rain-Water jieqi (usui) new year day is in
// the leap month.
Assert.IsTrue(cn.IsLeapYear(2033), "cn2033");
Assert.IsFalse(cn.IsLeapYear(2034), "cn2034");
}
/// <summary>
/// 取得農曆的日期
/// </summary>
/// <param name="dt">日期</param>
/// <returns></returns>
public static string GetLunisolarDate(DateTime dt)
{
string lunisolarDate = "";
TaiwanLunisolarCalendar tlc = new TaiwanLunisolarCalendar();
if (tlc.IsLeapYear(tlc.GetYear(dt)) && tlc.GetMonth(dt) >= tlc.GetLeapMonth(tlc.GetYear(dt)))
{
lunisolarDate = FormatLunisolarYear(tlc.GetYear(dt)) +
FormatLunisolarMonth(tlc.GetMonth(dt) - 1) +
FormatLunisolarDay(tlc.GetDayOfMonth(dt));
}
else
{
lunisolarDate = FormatLunisolarYear(tlc.GetYear(dt)) +
FormatLunisolarMonth(tlc.GetMonth(dt)) +
FormatLunisolarDay(tlc.GetDayOfMonth(dt));
}
//return "農曆 " + lunisolarDate;
return(lunisolarDate);
}
/// <summary>
/// 排序樣板 By 日期順序，先來的要先排序在前面被檢測
/// </summary>
/// <param name="festivalTemplates"></param>
/// <param name="beforeDay">前幾天(節慶)</param>
/// <returns></returns>
private IList <TemplateVO> SortTemplateByDate(IList <TemplateVO> festivalTemplates, int beforeDay)
{
IList <TemplateVO> result = new List <TemplateVO>();
if (festivalTemplates != null && festivalTemplates.Count > 0)
{
foreach (TemplateVO templateVO in festivalTemplates)
{
if (templateVO.Name.Equals("聖誕節") || templateVO.Name.Equals("西洋情人節"))
{
//此兩個節日用西元算
DateTime today = DateTime.Today;
int year = DateTime.Today.Year;
int month = int.Parse(templateVO.StartDate.Substring(0, 2));
int day = int.Parse(templateVO.StartDate.Substring(2, 2));
DateTime endDate = new DateTime(DateTime.Today.Year, month, day);
DateTime startDate = endDate.AddDays(((-1) * beforeDay));
templateVO.BeginDate = startDate;
templateVO.LastDate = endDate;
}
else
{
//此其他的節日用農曆算
//先從農曆轉成西元
TaiwanLunisolarCalendar tlc = new TaiwanLunisolarCalendar();
DateTime today = DateTime.Today;
int year = tlc.GetYear(today);
int month = int.Parse(templateVO.StartDate.Substring(0, 2));
int day = int.Parse(templateVO.StartDate.Substring(2, 2));
int era = tlc.GetEra(today);
//春節的話因為還沒到這個年，所以要加1個月
if (templateVO.Name.Equals("春節"))
{
year = tlc.GetYear(DateTime.Today.AddMonths(1));
era = tlc.GetEra(DateTime.Today.AddMonths(1));
}
//判斷今年是否為閏年，閏年的話抓出正確的日期
if (tlc.IsLeapYear(year, era))
{
//閏月月份
int leapMonth = tlc.GetLeapMonth(year, era);
//閏月天數
//int monthDays = tlc.GetDaysInMonth(year, leapMonth, era);
//閏月有13個月，例如leapMonth=5，代表閏四月，則農曆5月開始要多加1個月
if (month >= leapMonth)
{
month += 1;
}
}
DateTime endDate = tlc.ToDateTime(year, month, day, 0, 0, 0, 0, era);
DateTime startDate = endDate.AddDays(((-1) * beforeDay));
templateVO.BeginDate = startDate;
templateVO.LastDate = endDate;
}
}
result = festivalTemplates.OrderBy(p => p.BeginDate).ToList();
}
return(result);
}
/// <summary>
/// 取得目前要使用的樣板
/// </summary>
/// <param name="beforeDay">前幾天(節慶)</param>
/// <returns>目前要使用的樣板</returns>
public TemplateVO GetCurrentTemplate(int beforeDay)
{
//先抓節日的 (要存農曆日還是西元要再確認，存西元必須每年度去調整)
IList <TemplateVO> festivalTemplates = GetTemplateList(TemplateVO.Type.Festival);
if (festivalTemplates != null && festivalTemplates.Count > 0)
{
foreach (TemplateVO templateVO in festivalTemplates)
{
if (templateVO.Name.Equals("聖誕節") || templateVO.Name.Equals("西洋情人節"))
{
//此兩個節日用西元算
DateTime today = DateTime.Today;
int year = DateTime.Today.Year;
int month = int.Parse(templateVO.StartDate.Substring(0, 2));
int day = int.Parse(templateVO.StartDate.Substring(2, 2));
DateTime endDate = new DateTime(DateTime.Today.Year, month, day);
DateTime startDate = endDate.AddDays(((-1) * beforeDay));
if (today >= startDate && today <= endDate)
{
return(templateVO);
}
}
else
{
//此其他的節日用農曆算
//先從農曆轉成西元
TaiwanLunisolarCalendar tlc = new TaiwanLunisolarCalendar();
DateTime today = DateTime.Today;
int year = tlc.GetYear(today);
int month = int.Parse(templateVO.StartDate.Substring(0, 2));
int day = int.Parse(templateVO.StartDate.Substring(2, 2));
int era = tlc.GetEra(today);
//判斷今年是否為閏年，閏年的話抓出正確的日期
if (tlc.IsLeapYear(year, era))
{
//閏月月份
int leapMonth = tlc.GetLeapMonth(year, era);
//閏月天數
//int monthDays = tlc.GetDaysInMonth(year, leapMonth, era);
//閏月有13個月，例如leapMonth=5，代表閏四月，則農曆5月開始要多加1個月
if (month >= leapMonth)
{
month += 1;
}
}
DateTime endDate = tlc.ToDateTime(year, month, day, 0, 0, 0, 0, era);
DateTime startDate = endDate.AddDays(((-1) * beforeDay));
if (today >= startDate && today <= endDate)
{
return(templateVO);
}
}
}
}
//季節
IList <TemplateVO> seasonTemplates = GetTemplateList(TemplateVO.Type.Season);
if (seasonTemplates != null && seasonTemplates.Count > 0)
{
DateTime date = DateTime.Today.AddDays(beforeDay);
string showDate = string.Format("{0}{1}", date.Month.ToString().PadLeft(2, '0'), date.Day.ToString().PadLeft(2, '0'));
int count = 0;
foreach (TemplateVO templateVO in seasonTemplates)
{
count += 1;
if (count < seasonTemplates.Count)
{
if (int.Parse(showDate) >= int.Parse(templateVO.StartDate) && int.Parse(showDate) <= int.Parse(templateVO.EndDate))
{
return(templateVO);
}
}
else
{
//最後一季的算法不一樣，可能有跨年(起始日期>結束時 則表示有跨年)
if (int.Parse(templateVO.StartDate) > int.Parse(templateVO.EndDate))
{
if (int.Parse(showDate) >= int.Parse(templateVO.StartDate) && int.Parse(showDate) <= int.Parse("1231"))
{
return(templateVO);
}
if (int.Parse(showDate) >= int.Parse("0101") && int.Parse(showDate) <= int.Parse(templateVO.EndDate))
{
return(templateVO);
}
}
else
{
if (int.Parse(showDate) >= int.Parse(templateVO.StartDate) && int.Parse(showDate) <= int.Parse(templateVO.EndDate))
{
return(templateVO);
}
}
}
}
}
//都沒有的話回傳季節的第一個樣板
return(seasonTemplates[0]);
}