GregorianCalendar.GetDaysInMonth(Int32, Int32, Int32) Method

Reference

Definition

Namespace:: System.Globalization

Assemblies:: mscorlib.dll, System.Globalization.Calendars.dll

Assembly:: System.Runtime.dll

Assembly:: System.Globalization.Calendars.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: GregorianCalendar.cs

Source:: GregorianCalendar.cs

Source:: GregorianCalendar.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Returns the number of days in the specified month in the specified year in the specified era.

public:
 override int GetDaysInMonth(int year, int month, int era);

public override int GetDaysInMonth (int year, int month, int era);

override this.GetDaysInMonth : int * int * int -> int

Public Overrides Function GetDaysInMonth (year As Integer, month As Integer, era As Integer) As Integer

Parameters

year: Int32

An integer that represents the year.

month: Int32

An integer from 1 to 12 that represents the month.

era: Int32

An integer that represents the era.

Returns

Int32

The number of days in the specified month in the specified year in the specified era.

Exceptions

ArgumentOutOfRangeException

era is outside the range supported by the calendar.

-or-

year is outside the range supported by the calendar.

-or-

month is outside the range supported by the calendar.

Examples

The following code example calls GetDaysInMonth for the second month in each of five years in each era.

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Creates and initializes a GregorianCalendar.
   GregorianCalendar^ myCal = gcnew GregorianCalendar;
   
   // Displays the header.
   Console::Write( "YEAR\t" );
   for ( int y = 2001; y <= 2005; y++ )
      Console::Write( "\t {0}", y );
   Console::WriteLine();
   
   // Displays the value of the CurrentEra property.
   Console::Write( "CurrentEra:" );
   for ( int y = 2001; y <= 2005; y++ )
      Console::Write( "\t {0}", myCal->GetDaysInMonth( y, 2, GregorianCalendar::CurrentEra ) );
   Console::WriteLine();
   
   // Displays the values in the Eras property.
   for ( int i = 0; i < myCal->Eras->Length; i++ )
   {
      Console::Write( "Era {0}:\t", myCal->Eras[ i ] );
      for ( int y = 2001; y <= 2005; y++ )
         Console::Write( "\t {0}", myCal->GetDaysInMonth( y, 2, myCal->Eras[ i ] ) );
      Console::WriteLine();

   }
}

/*
This code produces the following output.

YEAR            2001    2002    2003    2004    2005
CurrentEra:     28      28      28      29      28
Era 1:          28      28      28      29      28

*/

using System;
using System.Globalization;

public class SamplesGregorianCalendar  {

   public static void Main()  {

      // Creates and initializes a GregorianCalendar.
      GregorianCalendar myCal = new GregorianCalendar();

      // Displays the header.
      Console.Write( "YEAR\t" );
      for ( int y = 2001; y <= 2005; y++ )
         Console.Write( "\t{0}", y );
      Console.WriteLine();

      // Displays the value of the CurrentEra property.
      Console.Write( "CurrentEra:" );
      for ( int y = 2001; y <= 2005; y++ )
         Console.Write( "\t{0}", myCal.GetDaysInMonth( y, 2, GregorianCalendar.CurrentEra ) );
      Console.WriteLine();

      // Displays the values in the Eras property.
      for ( int i = 0; i < myCal.Eras.Length; i++ )  {
         Console.Write( "Era {0}:\t", myCal.Eras[i] );
         for ( int y = 2001; y <= 2005; y++ )
            Console.Write( "\t{0}", myCal.GetDaysInMonth( y, 2, myCal.Eras[i] ) );
         Console.WriteLine();
      }
   }
}

/*
This code produces the following output.

YEAR            2001    2002    2003    2004    2005
CurrentEra:     28      28      28      29      28
Era 1:          28      28      28      29      28

*/

Imports System.Globalization

Public Class SamplesGregorianCalendar   
   
   Public Shared Sub Main()

      ' Creates and initializes a GregorianCalendar.
      Dim myCal As New GregorianCalendar()

      ' Displays the header.
      Console.Write("YEAR" + ControlChars.Tab)
      Dim y As Integer
      For y = 2001 To 2005
         Console.Write(ControlChars.Tab + "{0}", y)
      Next y
      Console.WriteLine()

      ' Displays the value of the CurrentEra property.
      Console.Write("CurrentEra:")
      For y = 2001 To 2005
         Console.Write(ControlChars.Tab + "{0}", myCal.GetDaysInMonth(y, 2, GregorianCalendar.CurrentEra))
      Next y
      Console.WriteLine()

      ' Displays the values in the Eras property.
      Dim i As Integer
      For i = 0 To myCal.Eras.Length - 1
         Console.Write("Era {0}:" + ControlChars.Tab, myCal.Eras(i))
         For y = 2001 To 2005
            Console.Write(ControlChars.Tab + "{0}", myCal.GetDaysInMonth(y, 2, myCal.Eras(i)))
         Next y
         Console.WriteLine()
      Next i

   End Sub

End Class


'This code produces the following output.
'
'YEAR            2001    2002    2003    2004    2005
'CurrentEra:     28      28      28      29      28
'Era 1:          28      28      28      29      28

Remarks

For example, this method returns 28 or 29 for February (month = 2), depending on whether year is a leap year.

Applies to

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