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GregorianCalendar.GetDaysInMonth Method (Int32, Int32, Int32)

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

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

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

Parameters

year
Type: System.Int32

An integer that represents the year.

month
Type: System.Int32

An integer from 1 to 12 that represents the month.

era
Type: System.Int32

An integer that represents the era.

Return Value

Type: System.Int32
The number of days in the specified month in the specified year in the specified era.

ExceptionCondition
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.

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

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

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

*/

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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