共用方式為


Calendar.IsLeapDay 方法

定義

在衍生類別覆寫時,判斷某個日期是否為閏日。

多載

IsLeapDay(Int32, Int32, Int32)

判斷目前紀元中指定日期是否為閏日。

IsLeapDay(Int32, Int32, Int32, Int32)

當在衍生類別中覆寫時,判斷指定紀元中的指定日期是否為閏日。

IsLeapDay(Int32, Int32, Int32)

來源:
Calendar.cs
來源:
Calendar.cs
來源:
Calendar.cs

判斷目前紀元中指定日期是否為閏日。

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

參數

year
Int32

表示年份的整數。

month
Int32

正整數,表示月份。

day
Int32

表示日期的正整數。

傳回

如果指定的日期為閏日,則為 true,否則為 false

例外狀況

year 不在曆法支援的範圍內。

-或-

month 不在曆法支援的範圍內。

-或-

day 不在曆法支援的範圍內。

範例

下列程式代碼範例會比較 類別的不同實作 Calendar

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

備註

為了構成日曆年度與地球繞著太陽旋轉的實際時間,或月球繞地球旋轉的實際時間之間的差異,閏年與標準行事歷年份的天數不同。 每個實作都會 Calendar 以不同的方式定義閏年。

閏日是只在閏年發生的一天。 例如,在公曆中,2 月的第 29 天是唯一的閏日。

另請參閱

適用於

IsLeapDay(Int32, Int32, Int32, Int32)

來源:
Calendar.cs
來源:
Calendar.cs
來源:
Calendar.cs

當在衍生類別中覆寫時,判斷指定紀元中的指定日期是否為閏日。

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

參數

year
Int32

表示年份的整數。

month
Int32

正整數,表示月份。

day
Int32

表示日期的正整數。

era
Int32

表示紀元的整數。

傳回

如果指定的日期為閏日,則為 true,否則為 false

例外狀況

year 不在曆法支援的範圍內。

-或-

month 不在曆法支援的範圍內。

-或-

day 不在曆法支援的範圍內。

-或-

era 不在曆法支援的範圍內。

備註

為了構成日曆年度與地球繞著太陽旋轉的實際時間,或月球繞地球旋轉的實際時間之間的差異,閏年與標準行事歷年份的天數不同。 每個實作都會 Calendar 以不同的方式定義閏年。

閏日是只在閏年發生的一天。 例如,在公曆中,2 月的第 29 天是唯一的閏日。

給實施者的注意事項

衍生類別必須支持 CurrentEra 當做 era 參數傳遞時。 其中一個支援 CurrentEra 方式是將它取代為儲存在 中的 Eras[0]值,也就是行事歷目前紀元的值。

另請參閱

適用於