# DateTime.IsLeapYear(Int32)DateTime.IsLeapYear(Int32)DateTime.IsLeapYear(Int32)DateTime.IsLeapYear(Int32) Method

## Definición

Devuelve una indicación en la que se precisa si el año especificado es bisiesto.Returns an indication whether the specified year is a leap year.

``````public:
static bool IsLeapYear(int year);``````
``public static bool IsLeapYear (int year);``
``static member IsLeapYear : int -> bool``
``Public Shared Function IsLeapYear (year As Integer) As Boolean``

#### Parámetros

year
Int32 Int32 Int32 Int32

Año de 4 dígitos.A 4-digit year.

#### Devoluciones

`true` si `year` es un año bisiesto; en caso contrario, `false`.`true` if `year` is a leap year; otherwise, `false`.

#### Excepciones

`year` es menor que 1 o mayor que 9999.`year` is less than 1 or greater than 9999.

## Ejemplos

En el ejemplo siguiente se IsLeapYear usa el método para determinar qué años entre 1994 y 2014 son bisiestos.The following example uses the IsLeapYear method to determine which years between 1994 and 2014 are leap years. En el ejemplo también se muestra el resultado cuando AddYears se usa el método para agregar un año a un día bisiesto.The example also illustrates the result when the AddYears method is used to add a year to a leap day.

``````using System;

public class IsLeapYear
{
public static void Main()
{
for (int year = 1994; year <= 2014; year++)
{
if (DateTime.IsLeapYear(year))
{
Console.WriteLine("{0} is a leap year.", year);
DateTime leapDay = new DateTime(year, 2, 29);
Console.WriteLine("   One year from {0} is {1}.",
leapDay.ToString("d"),
nextYear.ToString("d"));
}
}
}
}
// The example produces the following output:
//       1996 is a leap year.
//          One year from 2/29/1996 is 2/28/1997.
//       2000 is a leap year.
//          One year from 2/29/2000 is 2/28/2001.
//       2004 is a leap year.
//          One year from 2/29/2004 is 2/28/2005.
//       2008 is a leap year.
//          One year from 2/29/2008 is 2/28/2009.
//       2012 is a leap year.
//          One year from 2/29/2012 is 2/28/2013.
``````
``````Module IsLeapYear
Public Sub Main()
For year As Integer = 1994 to 2014
If DateTime.IsLeapYear(year) Then
Console.WriteLine("{0} is a leap year.", year)
Dim leapDay As New Date(year, 2, 29)
Dim nextYear As Date = leapDay.AddYears(1)
Console.WriteLine("   One year from {0} is {1}.", _
leapDay.ToString("d"), _
nextYear.ToString("d"))
End If
Next
End Sub
End Module
' The example displays the following output:
'       1996 is a leap year.
'          One year from 2/29/1996 is 2/28/1997.
'       2000 is a leap year.
'          One year from 2/29/2000 is 2/28/2001.
'       2004 is a leap year.
'          One year from 2/29/2004 is 2/28/2005.
'       2008 is a leap year.
'          One year from 2/29/2008 is 2/28/2009.
'       2012 is a leap year.
'          One year from 2/29/2012 is 2/28/2013.
``````

## Comentarios

`year`se especifica como un número de base 10 de 4 dígitos; por ejemplo, 1996.`year` is specified as a 4-digit base 10 number; for example, 1996.

`year`siempre se interpreta como un año en el calendario gregoriano.`year` is always interpreted as a year in the Gregorian calendar. Para determinar si un año determinado era un año bisiesto en otro calendario, llame a ese método de objeto `IsLeapYear` de calendario.To determine whether a particular year was a leap year in some other calendar, call that calendar object's `IsLeapYear` method.