Calendar.IsLeapDay Método
Definição
Quando substituído em uma classe derivada, determina se uma data é um dia bissexto.When overridden in a derived class, determines whether a date is a leap day.
Sobrecargas
| IsLeapDay(Int32, Int32, Int32) |
Determina se a data especificada na era atual é um dia bissexto.Determines whether the specified date in the current era is a leap day. |
| IsLeapDay(Int32, Int32, Int32, Int32) |
Quando substituído em uma classe derivada, determina se a data especificada na era especificada é um dia bissexto.When overridden in a derived class, determines whether the specified date in the specified era is a leap day. |
IsLeapDay(Int32, Int32, Int32)
Determina se a data especificada na era atual é um dia bissexto.Determines whether the specified date in the current era is a leap day.
public:
virtual bool IsLeapDay(int year, int month, int day);
public virtual bool IsLeapDay (int year, int month, int day);
abstract member IsLeapDay : int * int * int -> bool
override this.IsLeapDay : int * int * int -> bool
Public Overridable Function IsLeapDay (year As Integer, month As Integer, day As Integer) As Boolean
Parâmetros
- year
- Int32
Um inteiro que representa o ano.An integer that represents the year.
- month
- Int32
Um inteiro positivo que representa o mês.A positive integer that represents the month.
- day
- Int32
Um inteiro positivo que representa o dia.A positive integer that represents the day.
Retornos
true se o dia especificado for um dia bissexto; caso contrário, false.true if the specified day is a leap day; otherwise, false.
Exceções
year está fora do intervalo com suporte do calendário.year is outside the range supported by the calendar.
- ou --or-
month está fora do intervalo com suporte do calendário.month is outside the range supported by the calendar.
- ou --or-
day está fora do intervalo com suporte do calendário.day is outside the range supported by the calendar.
Exemplos
O exemplo de código a seguir compara diferentes implementações da Calendar classe.The following code example compares different implementations of the Calendar class.
using namespace System;
using namespace System::Globalization;
int main()
{
// Creates an instance of every Calendar type.
array<Calendar^>^myCals = gcnew array<Calendar^>(8);
myCals[ 0 ] = gcnew GregorianCalendar;
myCals[ 1 ] = gcnew HebrewCalendar;
myCals[ 2 ] = gcnew HijriCalendar;
myCals[ 3 ] = gcnew JapaneseCalendar;
myCals[ 4 ] = gcnew JulianCalendar;
myCals[ 5 ] = gcnew KoreanCalendar;
myCals[ 6 ] = gcnew TaiwanCalendar;
myCals[ 7 ] = gcnew ThaiBuddhistCalendar;
// For each calendar, displays the current year, the number of months in that year,
// and the number of days in each month of that year.
int i;
int j;
int iYear;
int iMonth;
int iDay;
DateTime myDT = DateTime::Today;
for ( i = 0; i < myCals->Length; i++ )
{
iYear = myCals[ i ]->GetYear( myDT );
Console::WriteLine();
Console::WriteLine( " {0}, Year: {1}", myCals[ i ]->GetType(), myCals[ i ]->GetYear( myDT ) );
Console::WriteLine( " MonthsInYear: {0}", myCals[ i ]->GetMonthsInYear( iYear ) );
Console::WriteLine( " DaysInYear: {0}", myCals[ i ]->GetDaysInYear( iYear ) );
Console::WriteLine( " Days in each month:" );
Console::Write( " " );
for ( j = 1; j <= myCals[ i ]->GetMonthsInYear( iYear ); j++ )
Console::Write( " {0, -5}", myCals[ i ]->GetDaysInMonth( iYear, j ) );
Console::WriteLine();
iMonth = myCals[ i ]->GetMonth( myDT );
iDay = myCals[ i ]->GetDayOfMonth( myDT );
Console::WriteLine( " IsLeapDay: {0}", myCals[ i ]->IsLeapDay( iYear, iMonth, iDay ) );
Console::WriteLine( " IsLeapMonth: {0}", myCals[ i ]->IsLeapMonth( iYear, iMonth ) );
Console::WriteLine( " IsLeapYear: {0}", myCals[ i ]->IsLeapYear( iYear ) );
}
}
/*
This code produces the following output. The results vary depending on the date.
System::Globalization::GregorianCalendar, Year: 2002
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
System::Globalization::HebrewCalendar, Year: 5763
MonthsInYear: 13
DaysInYear: 385
Days in each month:
30 30 30 29 30 30 29 30 29 30 29 30 29
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: True
System::Globalization::HijriCalendar, Year: 1423
MonthsInYear: 12
DaysInYear: 355
Days in each month:
30 29 30 29 30 29 30 29 30 29 30 30
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: True
System::Globalization::JapaneseCalendar, Year: 14
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
System::Globalization::JulianCalendar, Year: 2002
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
System::Globalization::KoreanCalendar, Year: 4335
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
System::Globalization::TaiwanCalendar, Year: 91
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
System::Globalization::ThaiBuddhistCalendar, Year: 2545
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
*/
using System;
using System.Globalization;
public class SamplesCalendar {
public static void Main() {
// Creates an instance of every Calendar type.
Calendar[] myCals = new Calendar[8];
myCals[0] = new GregorianCalendar();
myCals[1] = new HebrewCalendar();
myCals[2] = new HijriCalendar();
myCals[3] = new JapaneseCalendar();
myCals[4] = new JulianCalendar();
myCals[5] = new KoreanCalendar();
myCals[6] = new TaiwanCalendar();
myCals[7] = new ThaiBuddhistCalendar();
// For each calendar, displays the current year, the number of months in that year,
// and the number of days in each month of that year.
int i, j, iYear, iMonth, iDay;
DateTime myDT = DateTime.Today;
for ( i = 0; i < myCals.Length; i++ ) {
iYear = myCals[i].GetYear( myDT );
Console.WriteLine();
Console.WriteLine( "{0}, Year: {1}", myCals[i].GetType(), myCals[i].GetYear( myDT ) );
Console.WriteLine( " MonthsInYear: {0}", myCals[i].GetMonthsInYear( iYear ) );
Console.WriteLine( " DaysInYear: {0}", myCals[i].GetDaysInYear( iYear ) );
Console.WriteLine( " Days in each month:" );
Console.Write( " " );
for ( j = 1; j <= myCals[i].GetMonthsInYear( iYear ); j++ )
Console.Write( " {0,-5}", myCals[i].GetDaysInMonth( iYear, j ) );
Console.WriteLine();
iMonth = myCals[i].GetMonth( myDT );
iDay = myCals[i].GetDayOfMonth( myDT );
Console.WriteLine( " IsLeapDay: {0}", myCals[i].IsLeapDay( iYear, iMonth, iDay ) );
Console.WriteLine( " IsLeapMonth: {0}", myCals[i].IsLeapMonth( iYear, iMonth ) );
Console.WriteLine( " IsLeapYear: {0}", myCals[i].IsLeapYear( iYear ) );
}
}
}
/*
This code produces the following output. The results vary depending on the date.
System.Globalization.GregorianCalendar, Year: 2002
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
System.Globalization.HebrewCalendar, Year: 5763
MonthsInYear: 13
DaysInYear: 385
Days in each month:
30 30 30 29 30 30 29 30 29 30 29 30 29
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: True
System.Globalization.HijriCalendar, Year: 1423
MonthsInYear: 12
DaysInYear: 355
Days in each month:
30 29 30 29 30 29 30 29 30 29 30 30
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: True
System.Globalization.JapaneseCalendar, Year: 14
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
System.Globalization.JulianCalendar, Year: 2002
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
System.Globalization.KoreanCalendar, Year: 4335
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
System.Globalization.TaiwanCalendar, Year: 91
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
System.Globalization.ThaiBuddhistCalendar, Year: 2545
MonthsInYear: 12
DaysInYear: 365
Days in each month:
31 28 31 30 31 30 31 31 30 31 30 31
IsLeapDay: False
IsLeapMonth: False
IsLeapYear: False
*/
Imports System.Globalization
Public Class SamplesCalendar
Public Shared Sub Main()
' Creates an instance of every Calendar type.
Dim myCals(7) As Calendar
myCals(0) = New GregorianCalendar()
myCals(1) = New HebrewCalendar()
myCals(2) = New HijriCalendar()
myCals(3) = New JapaneseCalendar()
myCals(4) = New JulianCalendar()
myCals(5) = New KoreanCalendar()
myCals(6) = New TaiwanCalendar()
myCals(7) = New ThaiBuddhistCalendar()
' For each calendar, displays the current year, the number of months in that year,
' and the number of days in each month of that year.
Dim i, j, iYear, iMonth, iDay As Integer
Dim myDT As DateTime = DateTime.Today
For i = 0 To myCals.Length - 1
iYear = myCals(i).GetYear(myDT)
Console.WriteLine()
Console.WriteLine("{0}, Year: {1}", myCals(i).GetType(), myCals(i).GetYear(myDT))
Console.WriteLine(" MonthsInYear: {0}", myCals(i).GetMonthsInYear(iYear))
Console.WriteLine(" DaysInYear: {0}", myCals(i).GetDaysInYear(iYear))
Console.WriteLine(" Days in each month:")
Console.Write(" ")
For j = 1 To myCals(i).GetMonthsInYear(iYear)
Console.Write(" {0,-5}", myCals(i).GetDaysInMonth(iYear, j))
Next j
Console.WriteLine()
iMonth = myCals(i).GetMonth(myDT)
iDay = myCals(i).GetDayOfMonth(myDT)
Console.WriteLine(" IsLeapDay: {0}", myCals(i).IsLeapDay(iYear, iMonth, iDay))
Console.WriteLine(" IsLeapMonth: {0}", myCals(i).IsLeapMonth(iYear, iMonth))
Console.WriteLine(" IsLeapYear: {0}", myCals(i).IsLeapYear(iYear))
Next i
End Sub
End Class
'This code produces the following output. The results vary depending on the date.
'
'System.Globalization.GregorianCalendar, Year: 2002
' MonthsInYear: 12
' DaysInYear: 365
' Days in each month:
' 31 28 31 30 31 30 31 31 30 31 30 31
' IsLeapDay: False
' IsLeapMonth: False
' IsLeapYear: False
'
'System.Globalization.HebrewCalendar, Year: 5763
' MonthsInYear: 13
' DaysInYear: 385
' Days in each month:
' 30 30 30 29 30 30 29 30 29 30 29 30 29
' IsLeapDay: False
' IsLeapMonth: False
' IsLeapYear: True
'
'System.Globalization.HijriCalendar, Year: 1423
' MonthsInYear: 12
' DaysInYear: 355
' Days in each month:
' 30 29 30 29 30 29 30 29 30 29 30 30
' IsLeapDay: False
' IsLeapMonth: False
' IsLeapYear: True
'
'System.Globalization.JapaneseCalendar, Year: 14
' MonthsInYear: 12
' DaysInYear: 365
' Days in each month:
' 31 28 31 30 31 30 31 31 30 31 30 31
' IsLeapDay: False
' IsLeapMonth: False
' IsLeapYear: False
'
'System.Globalization.JulianCalendar, Year: 2002
' MonthsInYear: 12
' DaysInYear: 365
' Days in each month:
' 31 28 31 30 31 30 31 31 30 31 30 31
' IsLeapDay: False
' IsLeapMonth: False
' IsLeapYear: False
'
'System.Globalization.KoreanCalendar, Year: 4335
' MonthsInYear: 12
' DaysInYear: 365
' Days in each month:
' 31 28 31 30 31 30 31 31 30 31 30 31
' IsLeapDay: False
' IsLeapMonth: False
' IsLeapYear: False
'
'System.Globalization.TaiwanCalendar, Year: 91
' MonthsInYear: 12
' DaysInYear: 365
' Days in each month:
' 31 28 31 30 31 30 31 31 30 31 30 31
' IsLeapDay: False
' IsLeapMonth: False
' IsLeapYear: False
'
'System.Globalization.ThaiBuddhistCalendar, Year: 2545
' MonthsInYear: 12
' DaysInYear: 365
' Days in each month:
' 31 28 31 30 31 30 31 31 30 31 30 31
' IsLeapDay: False
' IsLeapMonth: False
' IsLeapYear: False
Comentários
Para fazer a diferença entre o ano civil e o momento real em que a Terra gira em todo o sol ou o tempo real que a lua gira em volta da terra, um ano bissexto tem um número diferente de dias a partir de um ano civil padrão.To make up for the difference between the calendar year and the actual time that the earth rotates around the sun or the actual time that the moon rotates around the earth, a leap year has a different number of days from a standard calendar year. Cada Calendar implementação define anos bissextos de forma diferente.Each Calendar implementation defines leap years differently.
Um dia bissexto é um dia que ocorre apenas em um ano bissexto.A leap day is a day that occurs only in a leap year. Por exemplo, no calendário gregoriano, o dia 29 de fevereiro é o único dia bissexto.For example, in the Gregorian calendar, the 29th day of February is the only leap day.
Confira também
Aplica-se a
IsLeapDay(Int32, Int32, Int32, Int32)
Quando substituído em uma classe derivada, determina se a data especificada na era especificada é um dia bissexto.When overridden in a derived class, determines whether the specified date in the specified era is a leap day.
public:
abstract bool IsLeapDay(int year, int month, int day, int era);
public abstract bool IsLeapDay (int year, int month, int day, int era);
abstract member IsLeapDay : int * int * int * int -> bool
Public MustOverride Function IsLeapDay (year As Integer, month As Integer, day As Integer, era As Integer) As Boolean
Parâmetros
- year
- Int32
Um inteiro que representa o ano.An integer that represents the year.
- month
- Int32
Um inteiro positivo que representa o mês.A positive integer that represents the month.
- day
- Int32
Um inteiro positivo que representa o dia.A positive integer that represents the day.
- era
- Int32
Um inteiro que representa a era.An integer that represents the era.
Retornos
true se o dia especificado for um dia bissexto; caso contrário, false.true if the specified day is a leap day; otherwise, false.
Exceções
year está fora do intervalo com suporte do calendário.year is outside the range supported by the calendar.
- ou --or-
month está fora do intervalo com suporte do calendário.month is outside the range supported by the calendar.
- ou --or-
day está fora do intervalo com suporte do calendário.day is outside the range supported by the calendar.
- ou --or-
era está fora do intervalo com suporte do calendário.era is outside the range supported by the calendar.
Comentários
Para fazer a diferença entre o ano civil e o momento real em que a Terra gira em todo o sol ou o tempo real que a lua gira em volta da terra, um ano bissexto tem um número diferente de dias a partir de um ano civil padrão.To make up for the difference between the calendar year and the actual time that the earth rotates around the sun or the actual time that the moon rotates around the earth, a leap year has a different number of days from a standard calendar year. Cada Calendar implementação define anos bissextos de forma diferente.Each Calendar implementation defines leap years differently.
Um dia bissexto é um dia que ocorre apenas em um ano bissexto.A leap day is a day that occurs only in a leap year. Por exemplo, no calendário gregoriano, o dia 29 de fevereiro é o único dia bissexto.For example, in the Gregorian calendar, the 29th day of February is the only leap day.
Notas aos Implementadores
A classe derivada deve dar suporte CurrentEra quando é passada como o era parâmetro.The derived class must support CurrentEra when it is passed as the era parameter. Uma maneira de dar suporte ao CurrentEra é substituí-lo pelo valor armazenado em apagar [0], que é o valor da era atual do calendário.One way to support CurrentEra is by replacing it with the value stored in Eras[0], which is the value for the current era of the calendar.
Confira também
- CurrentEra
- Eras
- GetMonthsInYear(Int32)
- GetDaysInMonth(Int32, Int32)
- IsLeapYear(Int32)
- IsLeapMonth(Int32, Int32)