HijriCalendar.IsLeapMonth Method (Int32, Int32, Int32)
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Determines whether the specified month in the specified year and era is a leap month.
Namespace: System.Globalization
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Overrides Function IsLeapMonth ( _
year As Integer, _
month As Integer, _
era As Integer _
) As Boolean
public override bool IsLeapMonth(
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.Boolean
This method always returns false.
Exceptions
| Exception | Condition |
|---|---|
| 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. |
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.
Examples
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
using System;
using System.Globalization;
public class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
// 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++)
{
outputBlock.Text += String.Format("{0}:\t", y);
iMonthsInYear = myCal.GetMonthsInYear(y, HijriCalendar.CurrentEra);
for (int m = 1; m <= iMonthsInYear; m++)
outputBlock.Text += String.Format("\t{0}", myCal.IsLeapMonth(y, m, HijriCalendar.CurrentEra));
outputBlock.Text += "\n";
}
}
}
/*
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
*/
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.