PersianCalendar.IsLeapYear(Int32, Int32) Méthode
Définition
Important
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Détermine si l'année spécifiée de l'ère spécifiée est une année bissextile.
public:
override bool IsLeapYear(int year, int era);public override bool IsLeapYear (int year, int era);override this.IsLeapYear : int * int -> boolPublic Overrides Function IsLeapYear (year As Integer, era As Integer) As BooleanParamètres
- year
- Int32
Entier compris entre 1 et 9378 qui représente l'année.
- era
- Int32
Entier compris entre 0 et 1 qui représente l'ère.
Retours
true si l'année spécifiée est une année bissextile ; sinon, false.
Exceptions
year ou era est en dehors de la plage prise en charge par ce calendrier.
Exemples
L’exemple de code suivant illustre l’utilisation de la IsLeapYear méthode .
using System;
using System.Globalization;
class Sample
{
public static void Main()
{
PersianCalendar jc = new PersianCalendar();
DateTime thisDate = DateTime.Now;
//--------------------------------------------------------------------------------
// Properties
//--------------------------------------------------------------------------------
Console.WriteLine("\n........... Selected Properties .....................\n");
Console.Write("Eras:");
foreach (int era in jc.Eras)
{
Console.WriteLine(" era = {0}", era);
}
//--------------------------------------------------------------------------------
Console.WriteLine("\nTwoDigitYearMax = {0}", jc.TwoDigitYearMax);
//--------------------------------------------------------------------------------
// Methods
//--------------------------------------------------------------------------------
Console.WriteLine("\n............ Selected Methods .......................\n");
//--------------------------------------------------------------------------------
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("GetLeapMonth: leap month (if any) = {0}",
jc.GetLeapMonth(thisDate.Year, PersianCalendar.PersianEra));
//-------------------------------------------------------------
Console.WriteLine("GetMonthsInYear: months in a year = {0}",
jc.GetMonthsInYear(thisDate.Year, PersianCalendar.PersianEra));
//--------------------------------------------------------------------------------
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));
//--------------------------------------------------------------------------------
// 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));
}
}
// The example displays the following output:
// ........... Selected Properties .....................
//
// Eras: era = 1
//
// TwoDigitYearMax = 99
//
// ............ Selected Methods .......................
//
// GetDayOfYear: day = 1
// GetDaysInMonth: days = 31
// GetDaysInYear: days = 365
// GetLeapMonth: leap month (if any) = 0
// GetMonthsInYear: months in a year = 12
// IsLeapDay: This is a leap day = False
// IsLeapMonth: This is a leap month = False
// IsLeapYear: 1370 is a leap year = True
// ToFourDigitYear:
// If TwoDigitYearMax = 99, ToFourDigitYear(99) = 99
// If TwoDigitYearMax = 2012, ToFourDigitYear(99) = 1999
Imports System.Globalization
Class Sample
Public Shared Sub Main()
'--------------------------------------------------------------------------------
' Get today's date.
'--------------------------------------------------------------------------------
Dim jc As New PersianCalendar()
Dim thisDate As Date = Date.Now
'--------------------------------------------------------------------------------
' Properties
'--------------------------------------------------------------------------------
Console.WriteLine(vbCrLf & _
"........... Selected Properties ....................." & vbCrLf)
Console.Write("Eras:")
Dim era As Integer
For Each era In jc.Eras
Console.WriteLine(" era = {0}", era)
Next era
'--------------------------------------------------------------------------------
Console.WriteLine("TwoDigitYearMax = {0}", jc.TwoDigitYearMax)
'--------------------------------------------------------------------------------
' Methods
'--------------------------------------------------------------------------------
Console.WriteLine(vbCrLf & _
"............ Selected Methods ......................." & vbCrLf)
'--------------------------------------------------------------------------------
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("GetLeapMonth: leap month (if any) = {0}", _
jc.GetLeapMonth(thisDate.Year, PersianCalendar.PersianEra))
'--------------------------------------------------------------------------------
Console.WriteLine("GetMonthsInYear: months in a year = {0}", _
jc.GetMonthsInYear(thisDate.Year, PersianCalendar.PersianEra))
'--------------------------------------------------------------------------------
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))
'--------------------------------------------------------------------------------
' 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))
End Sub
End Class
' The example displays output like the following:
' ........... Seleted Properties .....................
'
' Eras: era = 1
'
' TwoDigitYearMax = 99
'
' ............ Selected Methods .......................
'
' GetDayOfYear: day = 1
' GetDaysInMonth: days = 31
' GetDaysInYear: days = 365
' GetLeapMonth: leap month (if any) = 0
' GetMonthsInYear: months in a year = 12
' IsLeapDay: This is a leap day = False
' IsLeapMonth: This is a leap month = False
' IsLeapYear: 1370 is a leap year = True
' ToFourDigitYear:
' If TwoDigitYearMax = 99, ToFourDigitYear(99) = 99
' If TwoDigitYearMax = 2012, ToFourDigitYear(99) = 1999
Remarques
À compter de .NET Framework 4.6, l’implémentation de la PersianCalendar classe est passée d’un algorithme d’observation à l’algorithme solaire Hijri. Par conséquent, la IsLeapYear méthode peut retourner des valeurs différentes lorsqu’elle est exécutée sur .NET Framework 4.6 que lorsqu’elle est exécutée sur les versions précédentes du .NET Framework.
S’applique à
Voir aussi
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