| public GetDayOfWeek ( System.DateTime time ) : DayOfWeek | ||
| time | System.DateTime | |
| return | DayOfWeek | |
/// <summary>
/// Returns the daylight changes for UTC (never).
/// </summary>
public override DaylightTime GetDaylightChanges(int year)
{
// We need a start and stop time
DateTime start, end;
Calendar cal = new GregorianCalendar();
// 2007+ at this point has a slightly different start/stop
if (year >= 2007)
{
start = new DateTime(year, 4, 1, 2, 0, 0);
end = new DateTime(year, 11, 1, 2, 0, 0);
}
else
{
start = new DateTime(year, 3, 1, 2, 0, 0);
end = new DateTime(year, 12, 1, 2, 0, 0);
}
// Move forward for the start date until we have a sunday
while (cal.GetDayOfWeek(start) != DayOfWeek.Sunday)
start = cal.AddDays(start, 1);
// Move backwards from the end date to the last sunday
while (cal.GetDayOfWeek(end) != DayOfWeek.Sunday)
start = cal.AddDays(end, 1);
// Create it
return new DaylightTime(start, end,
new TimeSpan(stOffset - dtOffset, 0, 0));
}
public List<List<CalendarDay>> Create(IQueryable<Episode> episodeCollection, DateTime currentDate)
{
List<List<CalendarDay>> model = this.ConstructModel();
Calendar calendar = new GregorianCalendar();
const int CalendarDays = 42;
DateTime startDate = new DateTime(currentDate.Year, currentDate.Month, 1);
startDate = startDate.Subtract(new TimeSpan((int)calendar.GetDayOfWeek(startDate) - (int)DayOfWeek.Monday, 0, 0, 0));
DateTime endDate = startDate.Add(new TimeSpan(CalendarDays, 0, 0, 0));
List<CalendarEpisode> episodes = this.GetEpisodes(episodeCollection, startDate, endDate);
int weekIndex = 0;
for (int i = 0; i < CalendarDays; i++)
{
DayOfWeek dayOfWeek = calendar.GetDayOfWeek(startDate);
this.AddEpisodes(model, episodes, startDate, weekIndex);
startDate = startDate.AddDays(1);
if (dayOfWeek == DayOfWeek.Sunday)
{
weekIndex++;
}
}
return model;
}
public void PosTest3()
{
System.Globalization.Calendar kC = new KoreanCalendar();
System.Globalization.Calendar gC = new GregorianCalendar();
DateTime dateTime = new GregorianCalendar().ToDateTime(2000, 2, 29, 0, 0, 0, 0);
DayOfWeek expectedValue;
DayOfWeek actualValue;
expectedValue = gC.GetDayOfWeek(dateTime);
actualValue = kC.GetDayOfWeek(dateTime);
Assert.Equal(expectedValue, actualValue);
}
public void PosTest4()
{
System.Globalization.Calendar kC = new KoreanCalendar();
System.Globalization.Calendar gC = new GregorianCalendar();
DateTime dateTime = new DateTime(_generator.GetInt64(-55) % (DateTime.MaxValue.Ticks + 1));
dateTime = new GregorianCalendar().ToDateTime(dateTime.Year, dateTime.Month, dateTime.Day, 0, 0, 0, 0);
DayOfWeek expectedValue;
DayOfWeek actualValue;
expectedValue = gC.GetDayOfWeek(dateTime);
actualValue = kC.GetDayOfWeek(dateTime);
Assert.Equal(expectedValue, actualValue);
}
public WorkDay(int year, int month, int day, GermanSpecialDays specialDays)
: this()
{
this.year = year;
this.month = month;
this.day = day;
var dt = new DateTime(year, month, day);
var cal = new GregorianCalendar();
this.DayOfWeek = cal.GetDayOfWeek(dt);
GermanSpecialDay specialDay;
this.DayType = this.calculateDayType(dt, this.DayOfWeek, specialDays, out specialDay);
this.SpecialDay = specialDay;
}
public static List<ActivityDay> GetCalendarDaysFor(int? period/*0=yearly, 1=monthly and 2=weekly*/)
{
var days = new List<ActivityDay>();
//var calendar = new ActivityCalendar();
var calendarYear = new GregorianCalendar();
switch (period)
{
case 0:
var dayNumber=(int)DateTime.Now.DayOfWeek;
var weekDay = DateTime.Now.AddDays(-dayNumber);
for (int i=0;i<7;i++)
{
days.Add(new ActivityDay {
Date = weekDay,
Name = calendarYear.GetDayOfWeek(weekDay).ToString(),
Status=true,
ActivityStatus = calendarYear.GetDayOfWeek(weekDay) == DayOfWeek.Friday ?
DayStatus.Holiday
:DayStatus.Active});
weekDay=weekDay.AddDays(1);
}
break;
case 1:
var daysInMonth=calendarYear.GetDaysInMonth(DateTime.Now.Year, DateTime.Now.Month);
for (int day = 1; day <= daysInMonth;day++ )
{
var date = new DateTime(DateTime.Now.Year, DateTime.Now.Month, day);
days.Add(new ActivityDay
{
Date = date,
Name = calendarYear.GetDayOfWeek(date).ToString(),
Status = true,
ActivityStatus = calendarYear.GetDayOfWeek(date) ==
DayOfWeek.Friday ? DayStatus.Holiday : DayStatus.Active
});
}
break;
default:
var daysInYr=calendarYear.GetDaysInYear(DateTime.Now.Year);
var startOfYr = new DateTime(DateTime.Now.Year, 1, 1);
for (int day = 0; day < daysInYr; day++)
{
var dateOfYr = new ActivityDay {Date=startOfYr.AddDays(day) };
dateOfYr.Name = calendarYear.GetDayOfWeek(dateOfYr.Date).ToString();
dateOfYr.Status = true;
dateOfYr.ActivityStatus = calendarYear.GetDayOfWeek(dateOfYr.Date) == DayOfWeek.Friday ? DayStatus.Holiday : DayStatus.Active;
days.Add(dateOfYr);
}
break;
}
return days;
}
public static long problem19_1()
{
long sum = 0;
GregorianCalendar calendar = new GregorianCalendar(GregorianCalendarTypes.USEnglish);
for (int year = 1901; year <= 2000; year++)
{
for (int month = 1; month <= 12; month++)
{
if (calendar.GetDayOfWeek(new DateTime(year, month, 1)) == DayOfWeek.Sunday)
sum++;
}
}
return sum;
}
public static string GregToHijriCompleteWithDayEng(DateTime dtTime)
{
if (dtTime == DateTime.MinValue)
return "";
UmAlQuraCalendar calHijri = new UmAlQuraCalendar();
GregorianCalendar calEng = new GregorianCalendar();
CultureInfo info = new CultureInfo("ar-sa");
info.DateTimeFormat.Calendar = calHijri;
string weekday = Convert.ToString(calEng.GetDayOfWeek(dtTime));
int CurrDayOfMonth = calHijri.GetDayOfMonth(dtTime);
int CurrMonth = calHijri.GetMonth(dtTime);
int Curryear = calHijri.GetYear(dtTime);
return string.Format("{3}/{2}/{1} h ", weekday, CurrDayOfMonth.ToString(), CurrMonth.ToString(), Curryear.ToString());
}
internal int GetWeekOfYearFullDays(DateTime time, CalendarWeekRule rule, int firstDayOfWeek, int fullDays)
{
int dayForJan1;
int offset;
int day;
System.Globalization.Calendar gc = new GregorianCalendar();
int dayOfYear = gc.GetDayOfYear(time) - 1; // Make the day of year to be 0-based, so that 1/1 is day 0.
//
// Calculate the number of days between the first day of year (1/1) and the first day of the week.
// This value will be a positive value from 0 ~ 6. We call this value as "offset".
//
// If offset is 0, it means that the 1/1 is the start of the first week.
// Assume the first day of the week is Monday, it will look like this:
// Sun Mon Tue Wed Thu Fri Sat
// 12/31 1/1 1/2 1/3 1/4 1/5 1/6
// +--> First week starts here.
//
// If offset is 1, it means that the first day of the week is 1 day ahead of 1/1.
// Assume the first day of the week is Monday, it will look like this:
// Sun Mon Tue Wed Thu Fri Sat
// 1/1 1/2 1/3 1/4 1/5 1/6 1/7
// +--> First week starts here.
//
// If offset is 2, it means that the first day of the week is 2 days ahead of 1/1.
// Assume the first day of the week is Monday, it will look like this:
// Sat Sun Mon Tue Wed Thu Fri Sat
// 1/1 1/2 1/3 1/4 1/5 1/6 1/7 1/8
// +--> First week starts here.
// Day of week is 0-based.
// Get the day of week for 1/1. This can be derived from the day of week of the target day.
// Note that we can get a negative value. It's ok since we are going to make it a positive value when calculating the offset.
dayForJan1 = (int)gc.GetDayOfWeek(time) - (dayOfYear % 7);
// Now, calucalte the offset. Substract the first day of week from the dayForJan1. And make it a positive value.
offset = (firstDayOfWeek - dayForJan1 + 14) % 7;
if (offset != 0 && offset >= fullDays)
{
//
// If the offset is greater than the value of fullDays, it means that
// the first week of the year starts on the week where Jan/1 falls on.
//
offset -= 7;
}
//
// Calculate the day of year for specified time by taking offset into account.
//
day = dayOfYear - offset;
if (day >= 0)
{
//
// If the day of year value is greater than zero, get the week of year.
//
return (day / 7 + 1);
}
//
// Otherwise, the specified time falls on the week of previous year.
// Call this method again by passing the last day of previous year.
//
return (GetWeekOfYearFullDays(time.AddDays(-(dayOfYear + 1)), rule, firstDayOfWeek, fullDays));
}
internal int GetFirstDayWeekOfYear(DateTime time, int firstDayOfWeek)
{
System.Globalization.Calendar gc = new GregorianCalendar();
int dayOfYear = gc.GetDayOfYear(time) - 1; // Make the day of year to be 0-based, so that 1/1 is day 0.
// Calculate the day of week for the first day of the year.
// dayOfWeek - (dayOfYear % 7) is the day of week for the first day of this year. Note that
// this value can be less than 0. It's fine since we are making it positive again in calculating offset.
int dayForJan1 = (int)gc.GetDayOfWeek(time) - (dayOfYear % 7);
int offset = (dayForJan1 - firstDayOfWeek + 14) % 7;
//BCLDebug.Assert(offset >= 0, "Calendar.GetFirstDayWeekOfYear(): offset >= 0");
return ((dayOfYear + offset) / 7 + 1);
}
public static string GetShortManReadable(DateTime datetime)
{
DateTime now = DateTime.Now;
if (now.Year == datetime.Year)//以下的前提是两时间都为同一年
{
TimeSpan span = now.Date - datetime.Date;
int days = span.Days;
switch (days)
{
case 1:
return "昨天";
case 0:
return "今天";
case -1:
return "明天";
default:
break;
}
if (days >= -14 || days <= 14)
{
GregorianCalendar gc = new GregorianCalendar();
int dateWeekofYear = gc.GetWeekOfYear(datetime, CalendarWeekRule.FirstDay, DayOfWeek.Monday);
int nowWeekofYear = gc.GetWeekOfYear(now, CalendarWeekRule.FirstDay, DayOfWeek.Monday);
string dateDayofWeek = gc.GetDayOfWeek(datetime).ToString();
int weeks = nowWeekofYear - dateWeekofYear;
switch (weeks)
{
case 1:
return string.Format("上周{0}", WhichDay(dateDayofWeek));
case 0:
return string.Format("本周{0}", WhichDay(dateDayofWeek));
case -1:
return string.Format("下周{0}", WhichDay(dateDayofWeek));
default:
break;
}
}
if (days >= -62 || days <= 62)
{
int months = now.Month - datetime.Month;
int dayofMonth = datetime.Day;
switch (months)
{
case 1:
return string.Format("上月{0}号", dayofMonth);
case 0:
return string.Format("本月{0}号", dayofMonth);
case -1:
return string.Format("下月{0}号", dayofMonth);
default:
break;
}
}
}
else//以下的前提是两时间不同年
{
}
return datetime.ToShortDateString();
}