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

Definition

Gibt eine Angabe darüber zurück, ob das angegebene Jahr ein Schaltjahr ist. 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
Parameter
year
Int32 Int32 Int32 Int32

Eine vierstellige Jahresangabe. A 4-digit year.

Gibt zurück

true, wenn year ein Schaltjahr ist, andernfalls false. true if year is a leap year; otherwise, false.

Ausnahmen

year ist kleiner als 1 oder größer als 9999. year is less than 1 or greater than 9999.

Beispiele

Im folgenden Beispiel wird die IsLeapYear Methode, um zu bestimmen, welche Jahre 2014 bis 1994 Schaltjahre sind.The following example uses the IsLeapYear method to determine which years between 1994 and 2014 are leap years. Das Beispiel veranschaulicht auch das Ergebnis bei der AddYears Methode wird verwendet, um ein Schalttag ein Jahr hinzugefügt.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);
            DateTime nextYear = leapDay.AddYears(1);
            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.

Hinweise

year angegeben als 4-stelliges Zahl zur Basis 10 ist. Beispiel: 1996.year is specified as a 4-digit base 10 number; for example, 1996.

year wird immer als ein Jahr im gregorianischen Kalender interpretiert werden.year is always interpreted as a year in the Gregorian calendar. Um zu bestimmen, ob ein bestimmtes Jahr ein Schaltjahr in einem anderen Kalender war, rufen Sie diese Kalenderobjekt IsLeapYear Methode.To determine whether a particular year was a leap year in some other calendar, call that calendar object's IsLeapYear method.

Gilt für: