IsLeapMonth Method (Int32, Int32, Int32)
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HijriCalendar.IsLeapMonth Method (Int32, Int32, Int32)

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

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

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

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

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.Boolean
This method always returns false.

ExceptionCondition
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.

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.

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


Imports System.Globalization

Public Class Example
   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      ' 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
         outputBlock.Text += String.Format("{0}:" + ControlChars.Tab, y)
         iMonthsInYear = myCal.GetMonthsInYear(y, HijriCalendar.CurrentEra)
         Dim m As Integer
         For m = 1 To iMonthsInYear
            outputBlock.Text += String.Format(ControlChars.Tab + "{0}", myCal.IsLeapMonth(y, m, HijriCalendar.CurrentEra))
         Next m
         outputBlock.Text &= vbCrLf
      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


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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