Calendar.IsLeapYear Method (Int32, Int32)

When overridden in a derived class, determines whether the specified year in the specified era is a leap year.

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

Syntax

'Declaration
Public MustOverride Function IsLeapYear ( _
    year As Integer, _
    era As Integer _
) As Boolean
public abstract bool IsLeapYear(
    int year,
    int era
)

Parameters

  • year
    Type: System.Int32
    An integer that represents the year.
  • era
    Type: System.Int32
    An integer that represents the era.

Return Value

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

Exceptions

Exception Condition
ArgumentOutOfRangeException

year is outside the range supported by the calendar.

-or-

era is outside the range supported by the calendar.

Remarks

To make up for the difference between the calendar year and the actual time that the earth rotates around the sun or the actual time that the moon rotates around the earth, a leap year has a different number of days from a standard calendar year. Each Calendar implementation defines leap years differently.

Notes to Inheritors

The derived class must support CurrentEra when it is passed as the era parameter. One way to support CurrentEra is by replacing it with the value stored in Eras[0], which is the value for the current era of the calendar.

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.