HebrewCalendar.IsLeapMonth Method (Int32, Int32, Int32)

Updated: October 2010

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

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

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 13 that represents the month.
era
Type: System.Int32
An integer that represents the era. Specify Calendar.Eras[Calendar.CurrentEra].

Return Value

Type: System.Boolean
true if the specified month is a leap month; otherwise, false.

ExceptionCondition
ArgumentOutOfRangeException

year, month, or era is outside the range supported by this calendar.

This implementation of the HebrewCalendar class recognizes only the Hebrew years 5343 to 5999 (1583 to 2239 in the Gregorian calendar).

In every 19-year cycle that ends with a year that is evenly divisible by 19, the 3rd, 6th, 8th, 11th, 14th, 17th, and 19th years are leap years. A common year can have from 353 to 355 days, depending on the placement of Jewish holidays. A leap year can have from 383 to 385 days.

A leap month is an entire month that occurs only in a leap year. In the Hebrew calendar, Adar Beit is the only leap month.

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


using System;
using System.Globalization;


public class Example
{

   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {

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

      // Checks all the months in five years in the current era.
      int iMonthsInYear;
      for (int y = 5761; y <= 5765; y++)
      {
         outputBlock.Text += String.Format("{0}:\t", y);
         iMonthsInYear = myCal.GetMonthsInYear(y, HebrewCalendar.CurrentEra);
         for (int m = 1; m <= iMonthsInYear; m++)
            outputBlock.Text += String.Format("\t{0}", myCal.IsLeapMonth(y, m, HebrewCalendar.CurrentEra));
         outputBlock.Text += "\n";
      }

   }

}

/*
This code produces the following output.

5761:           False   False   False   False   False   False   False   False   False   False   False   False
5762:           False   False   False   False   False   False   False   False   False   False   False   False
5763:           False   False   False   False   False   False   True    False   False   False   False   False   False
5764:           False   False   False   False   False   False   False   False   False   False   False   False
5765:           False   False   False   False   False   False   True    False   False   False   False   False   False

*/


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

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Date

History

Reason

October 2010

Corrected information about the Calendar.CurrentEra field.

Content bug fix.

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