• Article

UmAlQuraCalendar.IsLeapYear Method (Int32, Int32)

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Updated: October 2010

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

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

Syntax

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

public override bool IsLeapYear(
    int year,
    int era
)

Parameters

  • era
    Type: System.Int32
    An era. Specify UmAlQuraCalendar.Eras[UmAlQuraCalendar.CurrentEra].

Return Value

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

Exceptions

Exception Condition
ArgumentOutOfRangeException

year or era is outside the range supported by the UmAlQuraCalendar class.

Remarks

A common year has 354 days and a leap year has 355 days.

Examples

The following example lists the number of days in ten consecutive years and calls the IsLeapYear method to determine which years are leap years.

Imports System.Globalization

Module Example
   Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      Dim cal As New UmAlQuraCalendar()
      Dim currentYear As Integer = cal.GetYear(Date.Now)

      For year As Integer = currentYear To currentYear + 9
         outputBlock.Text += String.Format("{0:d4}: {1} days {2}", year,  
                           cal.GetDaysInYear(year, cal.Eras(UmAlQuraCalendar.CurrentEra)), 
                           If(cal.IsLeapYear(year, cal.Eras(UmAlQuraCalendar.CurrentEra)),
                              "(Leap Year)", "")) & vbCrLf       
      Next   
   End Sub
End Module
' The example displays the following output:
'       1431: 354 days
'       1432: 354 days
'       1433: 355 days (Leap Year)
'       1434: 354 days
'       1435: 355 days (Leap Year)
'       1436: 354 days
'       1437: 354 days
'       1438: 354 days
'       1439: 355 days (Leap Year)
'       1440: 354 days

using System;
using System.Globalization;

public class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      Calendar cal = new UmAlQuraCalendar();
      int currentYear = cal.GetYear(DateTime.Now);

      for (int year = currentYear; year <= currentYear + 9; year++)
         outputBlock.Text += String.Format("{0:d4}: {1} days {2}", year,
                           cal.GetDaysInYear(year, cal.Eras[UmAlQuraCalendar.CurrentEra]),
                           cal.IsLeapYear(year, cal.Eras[UmAlQuraCalendar.CurrentEra]) ?
                              "(Leap Year)" : "") + "\n";
   }
}
// The example displays the following output:
//       1431: 354 days
//       1432: 354 days
//       1433: 355 days (Leap Year)
//       1434: 354 days
//       1435: 355 days (Leap Year)
//       1436: 354 days
//       1437: 354 days
//       1438: 354 days
//       1439: 355 days (Leap Year)
//       1440: 354 days

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.

Change History

Date

History

Reason

October 2010

Corrected era parameter information and replaced the example.

Customer feedback.