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PersianCalendar.TwoDigitYearMax Property

Gets or sets the last year of a 100-year range that can be represented by a 2-digit year.

Namespace: System.Globalization
Assembly: mscorlib (in mscorlib.dll)

public override int TwoDigitYearMax { get; set; }
/** @property */
public int get_TwoDigitYearMax ()

/** @property */
public void set_TwoDigitYearMax (int value)

public override function get TwoDigitYearMax () : int

public override function set TwoDigitYearMax (value : int)

Not applicable.

Property Value

The last year of a 100-year range that can be represented by a 2-digit year.

Exception typeCondition

InvalidOperationException

This calendar is read-only.

ArgumentOutOfRangeException

The value in a set operation is less than 100 or greater than 9378.

This property allows a 2-digit year to be properly translated to a 4-digit year. For example, if this property is set to 2029, the 100-year range is from 1930 to 2029. Therefore, a 2-digit value of 30 is interpreted as 1930, while a 2-digit value of 29 is interpreted as 2029.

The initial value of this property is derived from the settings in the regional and language options in Control Panel. However, that information can change during the life of the AppDomain. The PersianCalendar class does not detect changes in the system settings automatically. If the calendar is not supported in the regional and language options, the initial value of this property is the default value defined by the calendar class.

The application should set this value to 99 to indicate that 2-digit years are to be taken literally. For example, if this property is set to 99, the 100-year range is from 0 (not a valid value for most calendars) to 99. Therefore, a 2-digit value of 30 is interpreted as 30.

The following code example demonstrates the field, property, and method members of the PersianCalendar class.

// This example demonstrates the members of the PersianCalendar class.

using System;
using System.Globalization;

class Sample 
{
 public static void Main() 
 {
		//--------------------------------------------------------------------------------
		// Get today's date.
		//--------------------------------------------------------------------------------
 Console.WriteLine("\n................. Today ...........................\n");
 PersianCalendar jc = new PersianCalendar();
 DateTime thisDate = DateTime.Now;

		// Use thisDate twice to display the name of the day and the current date.
 Console.WriteLine("Today is {0:dddd}, {0}", thisDate);
		//--------------------------------------------------------------------------------
		// Fields
		//--------------------------------------------------------------------------------
 Console.WriteLine("\n............... Fields .............................\n");
 Console.WriteLine("PersianEra = {0}", PersianCalendar.PersianEra);
		//--------------------------------------------------------------------------------
		// Properties
		//--------------------------------------------------------------------------------
 Console.WriteLine("\n............... Properties .........................\n");
 Console.Write("Eras:");
 foreach (int era in jc.Eras)
 {
 Console.WriteLine(" era = {0}", era);
 }
		//--------------------------------------------------------------------------------
 Console.WriteLine("MaxSupportedDateTime = {0:G}", jc.MaxSupportedDateTime);
		//--------------------------------------------------------------------------------
 Console.WriteLine("MinSupportedDateTime = {0:G}", jc.MinSupportedDateTime);
		//--------------------------------------------------------------------------------
 Console.WriteLine("TwoDigitYearMax = {0}", jc.TwoDigitYearMax);
		//--------------------------------------------------------------------------------
		// Methods
		//--------------------------------------------------------------------------------
 Console.WriteLine("\n................ Methods ...........................\n");

		// Create a date six months in the future and another date six months in the past.

 Console.WriteLine("AddMonths: thisDate + 6 months = {0}\n" + 
 " thisDate - 6 months = {1}",
 jc.AddMonths(thisDate, 6), jc.AddMonths(thisDate, -6));
		//--------------------------------------------------------------------------------

		// Create a date five years in the future and another date three years in the past.

 Console.WriteLine("AddYears: thisDate + 5 years = {0}\n" + 
 " thisDate - 3 years = {1}",
 jc.AddYears(thisDate, 5), jc.AddYears(thisDate, -3));
		//--------------------------------------------------------------------------------
 Console.WriteLine("GetDayOfMonth: month = {0}", jc.GetDayOfMonth(thisDate));
		//--------------------------------------------------------------------------------
 Console.WriteLine("GetDayOfWeek: day = {0}", jc.GetDayOfWeek(thisDate));
		//--------------------------------------------------------------------------------
 Console.WriteLine("GetDayOfYear: day = {0}", jc.GetDayOfYear(thisDate));
		//--------------------------------------------------------------------------------
 Console.WriteLine("GetDaysInMonth: days = {0}", 
 jc.GetDaysInMonth( thisDate.Year, thisDate.Month, 
 PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
 Console.WriteLine("GetDaysInYear: days = {0}", 
 jc.GetDaysInYear(thisDate.Year, PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
 Console.WriteLine("GetEra: era = {0}", jc.GetEra(thisDate));
		//--------------------------------------------------------------------------------
 Console.WriteLine("GetLeapMonth: leap month (if any) = {0}", 
 jc.GetLeapMonth(thisDate.Year, PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
 Console.WriteLine("GetMonth: month = {0}", jc.GetMonth(thisDate));
		//-------------------------------------------------------------
 Console.WriteLine("GetMonthsInYear: months in a year = {0}", 
 jc.GetMonthsInYear(thisDate.Year, PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
 Console.WriteLine("GetYear: year = {0}", jc.GetYear(thisDate));
		//--------------------------------------------------------------------------------
 Console.WriteLine("IsLeapDay: This is a leap day = {0}", 
 jc.IsLeapDay(thisDate.Year, thisDate.Month, thisDate.Day, 
 PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
 Console.WriteLine("IsLeapMonth: This is a leap month = {0}", 
 jc.IsLeapMonth(thisDate.Year, thisDate.Month, 
 PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
 Console.WriteLine("IsLeapYear: 1370 is a leap year = {0}", 
 jc.IsLeapYear(1370, PersianCalendar.PersianEra));
		//--------------------------------------------------------------------------------
 DateTime dt1 = jc.ToDateTime(1385, 3, 20, 20, 30, 15, 500, 
 PersianCalendar.PersianEra);
 Console.WriteLine("ToDateTime:");
 Console.WriteLine(" Gregorian calendar: {0}\n" +
 " Persian calendar: {1}", dt1, "3/20/1385 8:30:25 PM");
		//--------------------------------------------------------------------------------

		// Get the 4-digit year for a year whose last two digits are 99. The 4-digit year 
		// depends on the current value of the TwoDigitYearMax property.

 Console.WriteLine("ToFourDigitYear:");
 Console.WriteLine(" If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}", 
 jc.TwoDigitYearMax, jc.ToFourDigitYear(99));
 jc.TwoDigitYearMax = thisDate.Year;
 Console.WriteLine(" If TwoDigitYearMax = {0}, ToFourDigitYear(99) = {1}", 
 jc.TwoDigitYearMax, jc.ToFourDigitYear(99));
 }
}
/*
This code example produces the following results:

................. Today ...........................

Today is Wednesday, 6/14/2006 11:31:13 AM

............... Fields .............................

PersianEra = 1

............... Properties .........................

Eras: era = 1
MaxSupportedDateTime = 12/31/9999 11:59:59 PM
MinSupportedDateTime = 3/21/0622 12:00:00 AM
TwoDigitYearMax = 1410

................ Methods ...........................

AddMonths: thisDate + 6 months = 12/15/2006 11:31:13 AM
 thisDate - 6 months = 12/15/2005 11:31:13 AM
AddYears: thisDate + 5 years = 6/14/2011 11:31:13 AM
 thisDate - 3 years = 6/14/2003 11:31:13 AM
GetDayOfMonth: month = 24
GetDayOfWeek: day = Wednesday
GetDayOfYear: day = 86
GetDaysInMonth: days = 31
GetDaysInYear: days = 366
GetEra: era = 1
GetLeapMonth: leap month (if any) = 0
GetMonth: month = 3
GetMonthsInYear: months in a year = 12
GetYear: year = 1385
IsLeapDay: This is a leap day = False
IsLeapMonth: This is a leap month = False
IsLeapYear: 1370 is a leap year = True
ToDateTime:
 Gregorian calendar: 6/10/2006 8:30:15 PM
 Persian calendar: 3/20/1385 8:30:15 PM
ToFourDigitYear:
 If TwoDigitYearMax = 1410, ToFourDigitYear(99) = 1399
 If TwoDigitYearMax = 2006, ToFourDigitYear(99) = 1999

*/

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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