Calendar.GetDaysInMonth 方法

定義

在衍生類別中覆寫時,傳回指定月份中的天數。When overridden in a derived class, returns the number of days in the specified month.

多載

GetDaysInMonth(Int32, Int32)

傳回目前紀元之指定月份和年份中的天數。Returns the number of days in the specified month and year of the current era.

GetDaysInMonth(Int32, Int32, Int32)

在衍生類別中覆寫時,傳回指定月份、年份和紀元中的天數。When overridden in a derived class, returns the number of days in the specified month, year, and era.

GetDaysInMonth(Int32, Int32)

傳回目前紀元之指定月份和年份中的天數。Returns the number of days in the specified month and year of the current era.

public:
 virtual int GetDaysInMonth(int year, int month);
public virtual int GetDaysInMonth (int year, int month);
abstract member GetDaysInMonth : int * int -> int
override this.GetDaysInMonth : int * int -> int
Public Overridable Function GetDaysInMonth (year As Integer, month As Integer) As Integer

參數

year
Int32

表示年份的整數。An integer that represents the year.

month
Int32

正整數,表示月份。A positive integer that represents the month.

傳回

在目前紀元中指定年份的指定月份中的日數。The number of days in the specified month in the specified year in the current era.

例外狀況

year 不在曆法支援的範圍內。year is outside the range supported by the calendar.

-或--or- month 不在曆法支援的範圍內。month is outside the range supported by the calendar.

範例

下列程式碼範例會比較 Calendar 類別的不同執行。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

備註

例如,在 GregorianCalendar中,二月的 GetDaysInMonth 在閏年中會傳回28,而在閏年中則傳回29。For example, in GregorianCalendar, GetDaysInMonth for February returns 28 in a common year or 29 in a leap year.

另請參閱

GetDaysInMonth(Int32, Int32, Int32)

在衍生類別中覆寫時,傳回指定月份、年份和紀元中的天數。When overridden in a derived class, returns the number of days in the specified month, year, and era.

public:
 abstract int GetDaysInMonth(int year, int month, int era);
public abstract int GetDaysInMonth (int year, int month, int era);
abstract member GetDaysInMonth : int * int * int -> int
Public MustOverride Function GetDaysInMonth (year As Integer, month As Integer, era As Integer) As Integer

參數

year
Int32

表示年份的整數。An integer that represents the year.

month
Int32

正整數,表示月份。A positive integer that represents the month.

era
Int32

表示紀元的整數。An integer that represents the era.

傳回

在指定紀元的指定年份的指定月份中的日數。The number of days in the specified month in the specified year in the specified era.

例外狀況

year 不在曆法支援的範圍內。year is outside the range supported by the calendar.

-或--or- month 不在曆法支援的範圍內。month is outside the range supported by the calendar.

-或--or- era 不在曆法支援的範圍內。era is outside the range supported by the calendar.

備註

例如,在 GregorianCalendar中,二月的 GetDaysInMonth 在閏年中會傳回28,而在閏年中則傳回29。For example, in GregorianCalendar, GetDaysInMonth for February returns 28 in a common year or 29 in a leap year.

給實施者的注意事項

當此衍生類別當做 era 參數傳遞時,必須支援 CurrentEraThe derived class must support CurrentEra when it is passed as the era parameter. 支援 CurrentEra 的一種方法是將它取代為紀元 [0]中儲存的值,這是行事曆目前紀元的值。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.

另請參閱

適用於