This documentation is archived and is not being maintained.

PersianCalendar.IsLeapMonth Method (Int32, Int32, Int32)

Note: This method is new in the .NET Framework version 2.0.

Determines whether the specified month in the specified year and era is a leap month.

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

public override bool IsLeapMonth (
	int year,
	int month,
	int era
)
public boolean IsLeapMonth (
	int year, 
	int month, 
	int era
)
public override function IsLeapMonth (
	year : int, 
	month : int, 
	era : int
) : boolean

Parameters

year

An integer from 1 through 9378 that represents the year.

month

An integer that represents the month and ranges from 1 through 12 if year is not 9378, or 1 through 10 if year is 9378.

era

An integer from 0 through 1 that represents the era.

Return Value

Always returns false because the PersianCalendar type does not support the notion of a leap month.

Exception typeCondition

ArgumentOutOfRangeException

year, month, or era is outside the range supported by this calendar.

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 = new DateTime(thisDate.Year, thisDate.Month, thisDate.Day, 20, 30, 15, 500);
    DateTime dt2 = jc.ToDateTime(thisDate.Year, thisDate.Month, thisDate.Day, 20, 30, 15, 500, 
                                 PersianCalendar.PersianEra);
    Console.WriteLine("ToDateTime:");
    Console.WriteLine("  Gregorian calendar: {0}\n" +
                      "  Persian calendar:   {1}", dt1, dt2);
//--------------------------------------------------------------------------------

// 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 Friday, 8/20/2004 1:08:37 PM

............... 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 = 2/18/2005 1:08:37 PM
           thisDate - 6 months = 2/19/2004 1:08:37 PM
AddYears:  thisDate + 5 years =  8/21/2009 1:08:37 PM
           thisDate - 3 years =  8/21/2001 1:08:37 PM
GetDayOfMonth: month = 30
GetDayOfWeek: day = Friday
GetDayOfYear: day = 154
GetDaysInMonth: days = 30
GetDaysInYear: days = 365
GetEra: era = 1
GetLeapMonth: leap month (if any) = 0
GetMonth: month = 5
GetMonthsInYear: months in a year = 12
GetYear: year = 1383
IsLeapDay: This is a leap day = False
IsLeapMonth: This is a leap month = False
IsLeapYear: 1370 is a leap year = True
ToDateTime:
  Gregorian calendar: 8/20/2004 8:30:15 PM
  Persian calendar:   11/11/2625 8:30:15 PM
ToFourDigitYear:
  If TwoDigitYearMax = 1410, ToFourDigitYear(99) = 1399
  If TwoDigitYearMax = 2004, ToFourDigitYear(99) = 1999

*/

Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0
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