System.Globalization.Calendar
namespace System.Globalization
{
public abstract class Calendar : ICloneable
{
public const int CurrentEra = 0;
public virtual CalendarAlgorithmType AlgorithmType { get; }
protected virtual int DaysInYearBeforeMinSupportedYear { get; }
public abstract int[] Eras { get; }
public bool IsReadOnly { get; }
public virtual DateTime MaxSupportedDateTime { get; }
public virtual DateTime MinSupportedDateTime { get; }
public virtual int TwoDigitYearMax { get; set; }
protected Calendar();
public virtual DateTime AddDays(DateTime time, int days);
public virtual DateTime AddHours(DateTime time, int hours);
public virtual DateTime AddMilliseconds(DateTime time, double milliseconds);
public virtual DateTime AddMinutes(DateTime time, int minutes);
public abstract DateTime AddMonths(DateTime time, int months);
public virtual DateTime AddSeconds(DateTime time, int seconds);
public virtual DateTime AddWeeks(DateTime time, int weeks);
public abstract DateTime AddYears(DateTime time, int years);
public virtual object Clone();
public abstract int GetDayOfMonth(DateTime time);
public abstract DayOfWeek GetDayOfWeek(DateTime time);
public abstract int GetDayOfYear(DateTime time);
public virtual int GetDaysInMonth(int year, int month);
public abstract int GetDaysInMonth(int year, int month, int era);
public virtual int GetDaysInYear(int year);
public abstract int GetDaysInYear(int year, int era);
public abstract int GetEra(DateTime time);
public virtual int GetHour(DateTime time);
public virtual int GetLeapMonth(int year);
public virtual int GetLeapMonth(int year, int era);
public virtual double GetMilliseconds(DateTime time);
public virtual int GetMinute(DateTime time);
public abstract int GetMonth(DateTime time);
public virtual int GetMonthsInYear(int year);
public abstract int GetMonthsInYear(int year, int era);
public virtual int GetSecond(DateTime time);
public virtual int GetWeekOfYear(DateTime time, CalendarWeekRule rule, DayOfWeek firstDayOfWeek);
public abstract int GetYear(DateTime time);
public virtual bool IsLeapDay(int year, int month, int day);
public abstract bool IsLeapDay(int year, int month, int day, int era);
public virtual bool IsLeapMonth(int year, int month);
public abstract bool IsLeapMonth(int year, int month, int era);
public virtual bool IsLeapYear(int year);
public abstract bool IsLeapYear(int year, int era);
public static Calendar ReadOnly(Calendar calendar);
public virtual DateTime ToDateTime(int year, int month, int day, int hour, int minute, int second, int millisecond);
public abstract DateTime ToDateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int era);
public virtual int ToFourDigitYear(int year);
}
}