KoreanCalendar.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Globalization / KoreanCalendar.cs / 1305376 / KoreanCalendar.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
namespace System.Globalization {
 
    using System; 
    using System.Diagnostics.Contracts;
 
    /*=================================KoreanCalendar==========================
    **
    ** Korean calendar is based on the Gregorian calendar.  And the year is an offset to Gregorian calendar.
    ** That is, 
    **      Korean year = Gregorian year + 2333.  So 2000/01/01 A.D. is Korean 4333/01/01
    ** 
    ** 0001/1/1 A.D. is Korean year 2334. 
    **
    **  Calendar support range: 
    **      Calendar    Minimum     Maximum
    **      ==========  ==========  ==========
    **      Gregorian   0001/01/01   9999/12/31
    **      Korean      2334/01/01  12332/12/31 
    ============================================================================*/
 
 
[System.Runtime.InteropServices.ComVisible(true)]
    [Serializable] public class KoreanCalendar: Calendar { 
        //
        // The era value for the current era.
        //
 
        public const int KoreanEra = 1;
 
        // Since 
        //    Gregorian Year = Era Year + yearOffset
        // Gregorian Year 1 is Korean year 2334, so that 
        //    1 = 2334 + yearOffset
        //  So yearOffset = -2333
        // Gregorian year 2001 is Korean year 4334.
 
        //m_EraInfo[0] = new EraInfo(1, new DateTime(1, 1, 1).Ticks, -2333, 2334, GregorianCalendar.MaxYear + 2333);
 
        // Initialize our era info. 
        static internal EraInfo[] koreanEraInfo = InitEraInfo();
 
        static EraInfo[] InitEraInfo()
        {
            EraInfo[] eraRanges = new EraInfo[1];
            eraRanges[0] = new EraInfo( 1, 1, 1, 1, -2333, 2334, GregorianCalendar.MaxYear + 2333);   // era #, start year/month/day, yearOffset, minEraYear 
            return eraRanges;
        } 
 
        internal GregorianCalendarHelper helper;
 

        [System.Runtime.InteropServices.ComVisible(false)]
        public override DateTime MinSupportedDateTime
        { 
            get
            { 
                return (DateTime.MinValue); 
            }
        } 

        [System.Runtime.InteropServices.ComVisible(false)]
        public override DateTime MaxSupportedDateTime
        { 
            get
            { 
                return (DateTime.MaxValue); 
            }
        } 

        // Return the type of the Korean calendar.
        //
 
        [System.Runtime.InteropServices.ComVisible(false)]
        public override CalendarAlgorithmType AlgorithmType 
        { 
            get
            { 
                return CalendarAlgorithmType.SolarCalendar;
            }
        }
 
        /*=================================GetDefaultInstance==========================
        **Action: Internal method to provide a default intance of KoreanCalendar.  Used by NLS+ implementation 
        **       and other calendars. 
        **Returns:
        **Arguments: 
        **Exceptions:
        ============================================================================*/
        /*
        internal static Calendar GetDefaultInstance() { 
            if (m_defaultInstance == null) {
                m_defaultInstance = new KoreanCalendar(); 
            } 
            return (m_defaultInstance);
        } 
        */


        public KoreanCalendar() { 
            try {
                new CultureInfo("ko-KR"); 
            } catch (ArgumentException e) { 
                throw new TypeInitializationException(this.GetType().FullName, e);
            } 
            helper = new GregorianCalendarHelper(this, koreanEraInfo);
        }

        internal override int ID { 
            get {
                return (CAL_KOREA); 
            } 
        }
 

        public override DateTime AddMonths(DateTime time, int months) {
            return (helper.AddMonths(time, months));
        } 

 
        public override DateTime AddYears(DateTime time, int years) { 
            return (helper.AddYears(time, years));
        } 

        /*=================================GetDaysInMonth==========================
        **Action: Returns the number of days in the month given by the year and month arguments.
        **Returns: The number of days in the given month. 
        **Arguments:
        **      year The year in Korean calendar. 
        **      month The month 
        **      era     The Japanese era value.
        **Exceptions 
        **  ArgumentException  If month is less than 1 or greater * than 12.
        ============================================================================*/

 
        public override int GetDaysInMonth(int year, int month, int era) {
            return (helper.GetDaysInMonth(year, month, era)); 
        } 

 
        public override int GetDaysInYear(int year, int era) {
            return (helper.GetDaysInYear(year, era));
        }
 

        public override int GetDayOfMonth(DateTime time) { 
            return (helper.GetDayOfMonth(time)); 
        }
 

        public override DayOfWeek GetDayOfWeek(DateTime time)  {
            return (helper.GetDayOfWeek(time));
        } 

 
        public override int GetDayOfYear(DateTime time) 
        {
            return (helper.GetDayOfYear(time)); 
        }


        public override int GetMonthsInYear(int year, int era) { 
            return (helper.GetMonthsInYear(year, era));
        } 
 

        [System.Runtime.InteropServices.ComVisible(false)] 
        public override int GetWeekOfYear(DateTime time, CalendarWeekRule rule, DayOfWeek firstDayOfWeek)
        {
            return (helper.GetWeekOfYear(time, rule, firstDayOfWeek));
        } 

 
        public override int GetEra(DateTime time) { 
            return (helper.GetEra(time));
        } 

        public override int GetMonth(DateTime time) {
            return (helper.GetMonth(time));
        } 

 
        public override int GetYear(DateTime time) { 
            return (helper.GetYear(time));
        } 


        public override bool IsLeapDay(int year, int month, int day, int era)
        { 
            return (helper.IsLeapDay(year, month, day, era));
        } 
 

        public override bool IsLeapYear(int year, int era) { 
            return (helper.IsLeapYear(year, era));
        }

        // Returns  the leap month in a calendar year of the specified era. This method returns 0 
        // if this calendar does not have leap month, or this year is not a leap year.
        // 
 
        [System.Runtime.InteropServices.ComVisible(false)]
        public override int GetLeapMonth(int year, int era) 
        {
            return (helper.GetLeapMonth(year, era));
        }
 

        public override bool IsLeapMonth(int year, int month, int era) { 
            return (helper.IsLeapMonth(year, month, era)); 
        }
 

        public override DateTime ToDateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int era) {
            return (helper.ToDateTime(year, month, day, hour, minute, second, millisecond, era));
        } 

 
        public override int[] Eras { 
            get {
                return (helper.Eras); 
            }
        }

        private const int DEFAULT_TWO_DIGIT_YEAR_MAX = 4362; 

 
        public override int TwoDigitYearMax { 
            get {
                if (twoDigitYearMax == -1) { 
                    twoDigitYearMax = GetSystemTwoDigitYearSetting(ID, DEFAULT_TWO_DIGIT_YEAR_MAX);
                }
                return (twoDigitYearMax);
            } 

            set { 
                VerifyWritable(); 
                if (value < 99 || value > helper.MaxYear)
                { 
                    throw new ArgumentOutOfRangeException(
                                "year",
                                String.Format(
                                    CultureInfo.CurrentCulture, 
                                    Environment.GetResourceString("ArgumentOutOfRange_Range"),
                                    99, 
                                    helper.MaxYear)); 

                } 
                twoDigitYearMax = value;
            }
        }
 

        public override int ToFourDigitYear(int year) { 
            return (helper.ToFourDigitYear(year, this.TwoDigitYearMax)); 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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KoreanCalendar.cs source code in C# .NET

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