/// <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 TestDay()
{
TaiwanLunisolarCalendar tlc = new TaiwanLunisolarCalendar();
int year = tlc.GetYear(DateTime.Now);
int month = tlc.GetMonth(DateTime.Now);
int day = tlc.GetDayOfMonth(DateTime.Now);
string aa = string.Format("{0}/{1}/{2}", year, month, day);
Console.WriteLine("day = " + aa);
DateTime date2 = tlc.ToDateTime(year, month, day, 0, 0, 0, 0);
Console.WriteLine("day2 = " + date2.ToShortDateString());
}
public void ToDateTime()
{
Assert.AreEqual(new DateTime(2000, 2, 5), cn.ToDateTime(2000, 1, 1, 0, 0, 0, 0), "cn1");
Assert.AreEqual(new DateTime(2000, 2, 5), jp.ToDateTime(12, 1, 1, 0, 0, 0, 0, 4), "jp1"); // since 1988 (current epoch)
Assert.AreEqual(new DateTime(2000, 2, 5), tw.ToDateTime(89, 1, 1, 0, 0, 0, 0), "tw1"); // since 1912 (current epoch)
Assert.AreEqual(new DateTime(2000, 2, 5), kr.ToDateTime(2000, 1, 1, 0, 0, 0, 0), "kr1");
Assert.AreEqual(new DateTime(2001, 1, 24), cn.ToDateTime(2001, 1, 1, 0, 0, 0, 0), "cn2");
Assert.AreEqual(new DateTime(2001, 1, 24), jp.ToDateTime(13, 1, 1, 0, 0, 0, 0, 4), "jp2");
Assert.AreEqual(new DateTime(2001, 1, 24), tw.ToDateTime(90, 1, 1, 0, 0, 0, 0), "tw2");
Assert.AreEqual(new DateTime(2001, 1, 24), kr.ToDateTime(2001, 1, 1, 0, 0, 0, 0), "kr2");
Assert.AreEqual(new DateTime(2002, 2, 12), cn.ToDateTime(2002, 1, 1, 0, 0, 0, 0), "cn3");
Assert.AreEqual(new DateTime(2002, 2, 12), jp.ToDateTime(14, 1, 1, 0, 0, 0, 0, 4), "jp3");
Assert.AreEqual(new DateTime(2002, 2, 12), tw.ToDateTime(91, 1, 1, 0, 0, 0, 0), "tw3");
Assert.AreEqual(new DateTime(2002, 2, 12), kr.ToDateTime(2002, 1, 1, 0, 0, 0, 0), "kr3");
// actually it is 5th month which is leap, but that
// does not afffect on resulting DateTime
Assert.AreEqual(new DateTime(2001, 5, 23), cn.ToDateTime(2001, 5, 1, 0, 0, 0, 0), "cn4");
Assert.AreEqual(new DateTime(2001, 5, 23), jp.ToDateTime(13, 5, 1, 0, 0, 0, 0, 4), "jp4");
Assert.AreEqual(new DateTime(2001, 5, 23), tw.ToDateTime(90, 5, 1, 0, 0, 0, 0), "tw4");
Assert.AreEqual(new DateTime(2001, 5, 23), kr.ToDateTime(2001, 5, 1, 0, 0, 0, 0), "kr4");
// here the leap month works.
Assert.AreEqual(new DateTime(2002, 2, 11), cn.ToDateTime(2001, 13, 30, 0, 0, 0, 0), "cn5");
Assert.AreEqual(new DateTime(2002, 2, 11), jp.ToDateTime(13, 13, 30, 0, 0, 0, 0, 4), "jp5");
Assert.AreEqual(new DateTime(2002, 2, 11), tw.ToDateTime(90, 13, 30, 0, 0, 0, 0), "tw5");
Assert.AreEqual(new DateTime(2002, 2, 11), kr.ToDateTime(2001, 13, 30, 0, 0, 0, 0), "kr5");
Assert.AreEqual(cn.MinSupportedDateTime, cn.ToDateTime(1901, 1, 1, 0, 0, 0, 0), "cn6");
Assert.AreEqual(jp.MinSupportedDateTime, jp.ToDateTime(35, 1, 1, 0, 0, 0, 0, 3), "jp6"); // 1960-1-1
Assert.AreEqual(tw.MinSupportedDateTime, tw.ToDateTime(1, 1, 1, 0, 0, 0, 0), "tw6"); // 1912
Assert.AreEqual(kr.MinSupportedDateTime, kr.ToDateTime(918, 1, 1, 0, 0, 0, 0), "kr6");
Assert.AreEqual(jp.MinSupportedDateTime, cn.ToDateTime(1960, 1, 1, 0, 0, 0, 0), "jp-cn1");
}
/// <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]);
}
