HijriCalendar.IsLeapMonth(Int32, Int32, Int32) Method

Reference

Definition

Namespace:: System.Globalization

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

Assemblies:: netstandard.dll, System.Runtime.dll

Assembly:: System.Globalization.Calendars.dll

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: HijriCalendar.cs

Source:: HijriCalendar.cs

Source:: HijriCalendar.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.

Determines whether the specified month in the specified year and era is a leap month.

public:
 override bool IsLeapMonth(int year, int month, int era);

public override bool IsLeapMonth(int year, int month, int era);

override this.IsLeapMonth : int * int * int -> bool

Public Overrides Function IsLeapMonth (year As Integer, month As Integer, era As Integer) As Boolean

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

Boolean

This method always returns false.

Exceptions

ArgumentOutOfRangeException

era is outside the range supported by this calendar.

-or-

year is outside the range supported by this calendar.

-or-

month is outside the range supported by this calendar.

Examples

The following code example calls IsLeapMonth for all the months in five years in the current era.

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Creates and initializes a HijriCalendar.
   HijriCalendar^ myCal = gcnew HijriCalendar;
   
   // Checks all the months in five years in the current era.
   int iMonthsInYear;
   for ( int y = 1421; y <= 1425; y++ )
   {
      Console::Write( " {0}:\t", y );
      iMonthsInYear = myCal->GetMonthsInYear( y, HijriCalendar::CurrentEra );
      for ( int m = 1; m <= iMonthsInYear; m++ )
         Console::Write( "\t {0}", myCal->IsLeapMonth( y, m, HijriCalendar::CurrentEra ) );
      Console::WriteLine();

   }
}

/*
This code produces the following output.

1421:           False   False   False   False   False   False   False   False   False   False   False   False
1422:           False   False   False   False   False   False   False   False   False   False   False   False
1423:           False   False   False   False   False   False   False   False   False   False   False   False
1424:           False   False   False   False   False   False   False   False   False   False   False   False
1425:           False   False   False   False   False   False   False   False   False   False   False   False

*/

using System;
using System.Globalization;

public class SamplesHijriCalendar  {

   public static void Main()  {

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

      // Checks all the months in five years in the current era.
      int iMonthsInYear;
      for ( int y = 1421; y <= 1425; y++ )  {
         Console.Write( "{0}:\t", y );
         iMonthsInYear = myCal.GetMonthsInYear( y, HijriCalendar.CurrentEra );
         for ( int m = 1; m <= iMonthsInYear; m++ )
            Console.Write( "\t{0}", myCal.IsLeapMonth( y, m, HijriCalendar.CurrentEra ) );
         Console.WriteLine();
      }
   }
}

/*
This code produces the following output.

1421:           False   False   False   False   False   False   False   False   False   False   False   False
1422:           False   False   False   False   False   False   False   False   False   False   False   False
1423:           False   False   False   False   False   False   False   False   False   False   False   False
1424:           False   False   False   False   False   False   False   False   False   False   False   False
1425:           False   False   False   False   False   False   False   False   False   False   False   False

*/

Imports System.Globalization

Public Class SamplesHijriCalendar   
   
   Public Shared Sub Main()

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

      ' Checks all the months in five years in the current era.
      Dim iMonthsInYear As Integer
      Dim y As Integer
      For y = 1421 To 1425
         Console.Write("{0}:" + ControlChars.Tab, y)
         iMonthsInYear = myCal.GetMonthsInYear(y, HijriCalendar.CurrentEra)
         Dim m As Integer
         For m = 1 To iMonthsInYear
            Console.Write(ControlChars.Tab + "{0}", myCal.IsLeapMonth(y, m, HijriCalendar.CurrentEra))
         Next m
         Console.WriteLine()
      Next y

   End Sub

End Class


'This code produces the following output.
'
'1421:           False   False   False   False   False   False   False   False   False   False   False   False
'1422:           False   False   False   False   False   False   False   False   False   False   False   False
'1423:           False   False   False   False   False   False   False   False   False   False   False   False
'1424:           False   False   False   False   False   False   False   False   False   False   False   False
'1425:           False   False   False   False   False   False   False   False   False   False   False   False

Remarks

In every 30-year cycle that ends with a year that is evenly divisible by 30, the 2nd, 5th, 7th, 10th, 13th, 16th, 18th, 21st, 24th, 26th, and 29th years are leap years. A common year has 354 days and a leap year has 355 days.

A leap month is an entire month that occurs only in a leap year. The Hijri calendar does not have any leap months.

Applies to

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	1.3, 1.4, 1.6, 2.0, 2.1
UWP	10.0

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