Calendar.GetDaysInMonth 方法

定義

命名空間:: System.Globalization

組件:: mscorlib.dll, System.Globalization.dll

組件:: netstandard.dll, System.Runtime.dll

組件:: System.Globalization.dll

組件:: System.Runtime.dll

組件:: mscorlib.dll

組件:: netstandard.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

當在派生類別中覆寫時，會回傳指定月份的天數。

多載

名稱	Description
GetDaysInMonth(Int32, Int32)	回傳當前時代指定月份和年份的天數。
GetDaysInMonth(Int32, Int32, Int32)	當在派生類別中覆寫時，會回傳指定的月份、年份和時代的天數。

GetDaysInMonth(Int32, Int32)

來源:: Calendar.cs

來源:: Calendar.cs

來源:: Calendar.cs

來源:: Calendar.cs

來源:: Calendar.cs

回傳當前時代指定月份和年份的天數。

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

一個整數代表年份。

month: Int32

一個正整數代表月份。

傳回

Int32

指當前時代指定月份、指定年份的天數。

例外狀況

ArgumentOutOfRangeException

year 超出日曆所支持的範圍。

-或-

month 超出日曆所支持的範圍。

範例

以下程式碼範例比較了該 Calendar 類別的不同實作。

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， GetDaysInMonth 對於二月，在普通年會回傳28，閏年則是29。

另請參閱

適用於

GetDaysInMonth(Int32, Int32, Int32)

來源:: Calendar.cs

來源:: Calendar.cs

來源:: Calendar.cs

來源:: Calendar.cs

來源:: Calendar.cs

當在派生類別中覆寫時，會回傳指定的月份、年份和時代的天數。

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

一個整數代表年份。

month: Int32

一個正整數代表月份。

era: Int32

一個整數代表那個時代。

傳回

Int32

指定月份、指定年份、指定時代的天數。

例外狀況

ArgumentOutOfRangeException

year 超出日曆所支持的範圍。

-或-

month 超出日曆所支持的範圍。

-或-

era 超出日曆所支持的範圍。

備註

例如，在 GregorianCalendar中， GetDaysInMonth 對於二月，在普通年會回傳28，閏年則是29。

給實施者的注意事項

導出類別必須支援 CurrentEra 當它作為 era 參數傳遞時。一種支援 CurrentEra 方法是將它替換為儲存在 Eras[0]中的值，該值是曆法當前時代的值。

另請參閱

適用於

意見反應

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