# DateTime.DaysInMonth(Int32, Int32)DateTime.DaysInMonth(Int32, Int32)DateTime.DaysInMonth(Int32, Int32)DateTime.DaysInMonth(Int32, Int32) Method

## Definición

Devuelve el número de días del mes y año especificados.Returns the number of days in the specified month and year.

``````public:
static int DaysInMonth(int year, int month);``````
``public static int DaysInMonth (int year, int month);``
``static member DaysInMonth : int * int -> int``
``Public Shared Function DaysInMonth (year As Integer, month As Integer) As Integer``

#### Parámetros

year
Int32 Int32 Int32 Int32

Año.The year.

month
Int32 Int32 Int32 Int32

Mes (número del 1 al 12).The month (a number ranging from 1 to 12).

#### Devoluciones

Número de días de `month` para el `year` especificado.The number of days in `month` for the specified `year`.

Por ejemplo, si `month` es igual a 2 para febrero, el valor devuelto será 28 o 29, en función de que `year` sea un año bisiesto.For example, if `month` equals 2 for February, the return value is 28 or 29 depending upon whether `year` is a leap year.

#### Excepciones

`month` es menor que 1 o mayor que 12.`month` is less than 1 or greater than 12.

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

## Ejemplos

En el ejemplo siguiente se muestra cómo usar el DaysInMonth método para determinar el número de días en julio de 2001, febrero de 1998 (un no año bisiesto) y (un año bisiesto) de febrero de 1996.The following example demonstrates how to use the DaysInMonth method to determine the number of days in July 2001, February 1998 (a non-leap year), and February 1996 (a leap year).

``````using namespace System;

int main()
{
const int July = 7;
const int Feb = 2;

int daysInJuly = System::DateTime::DaysInMonth( 2001, July );
Console::WriteLine(daysInJuly);
// daysInFeb gets 28 because the year 1998 was not a leap year.
int daysInFeb = System::DateTime::DaysInMonth( 1998, Feb );
Console::WriteLine(daysInFeb);
// daysInFebLeap gets 29 because the year 1996 was a leap year.
int daysInFebLeap = System::DateTime::DaysInMonth( 1996, Feb );
Console::WriteLine(daysInFebLeap);
}
// The example displays the following output:
//       31
//       28
//       29
``````
``````using System;

class Example
{
static void Main()
{
const int July = 7;
const int Feb = 2;

int daysInJuly = System.DateTime.DaysInMonth(2001, July);
Console.WriteLine(daysInJuly);

// daysInFeb gets 28 because the year 1998 was not a leap year.
int daysInFeb = System.DateTime.DaysInMonth(1998, Feb);
Console.WriteLine(daysInFeb);

// daysInFebLeap gets 29 because the year 1996 was a leap year.
int daysInFebLeap = System.DateTime.DaysInMonth(1996, Feb);
Console.WriteLine(daysInFebLeap);
}
}
// The example displays the following output:
//       31
//       28
//       29
``````
``````Class Example
Public Shared Sub Main()
Const July As Integer = 7
Const Feb As Integer = 2

Dim daysInJuly As Integer = System.DateTime.DaysInMonth(2001, July)
Console.WriteLine(daysInJuly)

' daysInFeb gets 28 because the year 1998 was not a leap year.
Dim daysInFeb As Integer = System.DateTime.DaysInMonth(1998, Feb)
Console.WriteLine(daysInFeb)
' daysInFebLeap gets 29 because the year 1996 was a leap year.
Dim daysInFebLeap As Integer = System.DateTime.DaysInMonth(1996, Feb)
Console.WriteLine(daysInFebLeap)
End Sub
End Class
' The example displays the following output:
'       31
'       28
'       29
``````

El ejemplo siguiente muestra el número de días de cada mes de un año especificado en una matriz de enteros.The following example displays the number of days in each month of a year specified in an integer array.

``````using System;
using System.Globalization;

public class Example
{
public static void Main()
{
int[] years = { 2012, 2014 };
DateTimeFormatInfo dtfi = DateTimeFormatInfo.CurrentInfo;
Console.WriteLine("Days in the Month for the {0} culture " +
"using the {1} calendar\n",
CultureInfo.CurrentCulture.Name,
dtfi.Calendar.GetType().Name.Replace("Calendar", ""));
Console.WriteLine("{0,-10}{1,-15}{2,4}\n", "Year", "Month", "Days");

foreach (var year in years) {
for (int ctr = 0; ctr <= dtfi.MonthNames.Length - 1; ctr++) {
if (String.IsNullOrEmpty(dtfi.MonthNames[ctr]))
continue;

Console.WriteLine("{0,-10}{1,-15}{2,4}", year,
dtfi.MonthNames[ctr],
DateTime.DaysInMonth(year, ctr + 1));
}
Console.WriteLine();
}
}
}
// The example displays the following output:
//    Days in the Month for the en-US culture using the Gregorian calendar
//
//    Year      Month          Days
//
//    2012      January          31
//    2012      February         29
//    2012      March            31
//    2012      April            30
//    2012      May              31
//    2012      June             30
//    2012      July             31
//    2012      August           31
//    2012      September        30
//    2012      October          31
//    2012      November         30
//    2012      December         31
//
//    2014      January          31
//    2014      February         28
//    2014      March            31
//    2014      April            30
//    2014      May              31
//    2014      June             30
//    2014      July             31
//    2014      August           31
//    2014      September        30
//    2014      October          31
//    2014      November         30
//    2014      December         31
``````
``````Imports System.Globalization

Module Example
Public Sub Main()
Dim years() As Integer = { 2012, 2014 }
Dim dtfi As DateTimeFormatInfo = DateTimeFormatInfo.CurrentInfo
Console.WriteLine("Days in the Month for the {0} culture " +
"using the {1} calendar",
CultureInfo.CurrentCulture.Name,
dtfi.Calendar.GetType.Name.Replace("Calendar", ""))
Console.WriteLine()
Console.WriteLine("{0,-10}{1,-15}{2,4}", "Year", "Month", "Days")
Console.WriteLine()

For Each [year] As Integer In years
For ctr As Integer = 0 To dtfi.MonthNames.Length - 1
If String.IsNullOrEmpty(dtfi.MonthNames(ctr)) Then
Continue For
End If

Console.WriteLine("{0,-10}{1,-15}{2,4}", [year],
dtfi.MonthNames(ctr),
DateTime.DaysInMonth([year], ctr + 1))
Next
Console.WriteLine()
Next
End Sub
End Module
' The example displays the following output:
'    Days in the Month for the en-US culture using the Gregorian calendar
'
'    Year      Month          Days
'
'    2012      January          31
'    2012      February         29
'    2012      March            31
'    2012      April            30
'    2012      May              31
'    2012      June             30
'    2012      July             31
'    2012      August           31
'    2012      September        30
'    2012      October          31
'    2012      November         30
'    2012      December         31
'
'    2014      January          31
'    2014      February         28
'    2014      March            31
'    2014      April            30
'    2014      May              31
'    2014      June             30
'    2014      July             31
'    2014      August           31
'    2014      September        30
'    2014      October          31
'    2014      November         30
'    2014      December         31
``````

## Comentarios

El DaysInMonth método siempre interpreta `month` y `year` como incluso si el calendario gregoriano no es calendario actual de la referencia cultural actual del calendario del mes y año del calendario gregoriano.The DaysInMonth method always interprets `month` and `year` as the month and year of the Gregorian calendar even if the Gregorian calendar is not the current culture's current calendar. Para obtener el número de días del mes de un calendario determinado, llame a dicho calendario GetDaysInMonth método.To get the number of days in a specified month of a particular calendar, call that calendar's GetDaysInMonth method.