GetMonthsInYear Method (Int32)
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Calendar.GetMonthsInYear Method (Int32)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Returns the number of months in the specified year in the current era.

Namespace:  System.Globalization
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
Public Overridable Function GetMonthsInYear ( _
	year As Integer _
) As Integer

Parameters

year
Type: System.Int32
An integer that represents the year.

Return Value

Type: System.Int32
The number of months in the specified year in the current era.

ExceptionCondition
ArgumentOutOfRangeException

year is outside the range supported by the calendar.

For example, in HebrewCalendar, GetMonthsInYear returns 12 for a common year or 13 for a leap year.

The following code example compares different implementations of the Calendar class.


Imports System.Globalization

Public Class Example
   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)

      ' Creates an instance of every Calendar type.
      Dim myCals(6) As Calendar
      myCals(0) = New GregorianCalendar()
      myCals(1) = New HebrewCalendar()
      myCals(2) = New HijriCalendar()
      myCals(3) = New JapaneseCalendar()
      myCals(4) = New KoreanCalendar()
      myCals(5) = New TaiwanCalendar()
      myCals(6) = 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)
         outputBlock.Text &= vbCrLf
         outputBlock.Text += String.Format("{0}, Year: {1}", myCals(i).GetType(), myCals(i).GetYear(myDT)) & vbCrLf
         outputBlock.Text += String.Format("   MonthsInYear: {0}", myCals(i).GetMonthsInYear(iYear)) & vbCrLf
         outputBlock.Text += String.Format("   DaysInYear: {0}", myCals(i).GetDaysInYear(iYear)) & vbCrLf
         outputBlock.Text &= "   Days in each month:" & vbCrLf
         outputBlock.Text &= "      "

         For j = 1 To myCals(i).GetMonthsInYear(iYear)
            outputBlock.Text += String.Format(" {0,-5}", myCals(i).GetDaysInMonth(iYear, j))
         Next j
         outputBlock.Text &= vbCrLf

         iMonth = myCals(i).GetMonth(myDT)
         iDay = myCals(i).GetDayOfMonth(myDT)
         outputBlock.Text += String.Format("   IsLeapDay:   {0}", myCals(i).IsLeapDay(iYear, iMonth, iDay)) & vbCrLf
         outputBlock.Text += String.Format("   IsLeapMonth: {0}", myCals(i).IsLeapMonth(iYear, iMonth)) & vbCrLf
         outputBlock.Text += String.Format("   IsLeapYear:  {0}", myCals(i).IsLeapYear(iYear)) & vbCrLf
      Next
   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


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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