通过

GregorianCalendar.IsLeapYear(Int32, Int32) 方法

  • 参考

定义

命名空间:
System.Globalization
程序集:
mscorlib.dll, System.Globalization.Calendars.dll
程序集:
System.Runtime.dll
程序集:
System.Globalization.Calendars.dll
程序集:
mscorlib.dll
程序集:
netstandard.dll
Source:
GregorianCalendar.cs
Source:
GregorianCalendar.cs
Source:
GregorianCalendar.cs

确定指定纪元中的指定年份是否为闰年。

public:
 override bool IsLeapYear(int year, int era);
public override bool IsLeapYear (int year, int era);
override this.IsLeapYear : int * int -> bool
Public Overrides Function IsLeapYear (year As Integer, era As Integer) As Boolean

参数

year
Int32

一个整数，用于表示年份。

era
Int32

一个整数，用于表示纪元。

返回

Boolean

如果指定的年是闰年，则为 true；否则为 false。

例外

ArgumentOutOfRangeException

era 超出了日历支持的范围。

- 或 -

year 超出了日历支持的范围。

示例

下面的代码示例在每个时代调用 IsLeapYear 五年。

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Creates and initializes a GregorianCalendar.
   GregorianCalendar^ myCal = gcnew GregorianCalendar;
   
   // Displays the header.
   Console::Write( "YEAR\t" );
   for ( int y = 2001; y <= 2005; y++ )
      Console::Write( "\t {0}", y );
   Console::WriteLine();
   
   // Checks five years in the current era.
   Console::Write( "CurrentEra:" );
   for ( int y = 2001; y <= 2005; y++ )
      Console::Write( "\t {0}", myCal->IsLeapYear( y, GregorianCalendar::CurrentEra ) );
   Console::WriteLine();
   
   // Checks five years in each of the eras.
   for ( int i = 0; i < myCal->Eras->Length; i++ )
   {
      Console::Write( "Era {0}:\t", myCal->Eras[ i ] );
      for ( int y = 2001; y <= 2005; y++ )
         Console::Write( "\t {0}", myCal->IsLeapYear( y, myCal->Eras[ i ] ) );
      Console::WriteLine();

   }
}

/*
This code produces the following output.

YEAR            2001    2002    2003    2004    2005
CurrentEra:     False   False   False   True    False
Era 1:          False   False   False   True    False

*/

using System;
using System.Globalization;

public class SamplesGregorianCalendar  {

   public static void Main()  {

      // Creates and initializes a GregorianCalendar.
      GregorianCalendar myCal = new GregorianCalendar();

      // Displays the header.
      Console.Write( "YEAR\t" );
      for ( int y = 2001; y <= 2005; y++ )
         Console.Write( "\t{0}", y );
      Console.WriteLine();

      // Checks five years in the current era.
      Console.Write( "CurrentEra:" );
      for ( int y = 2001; y <= 2005; y++ )
         Console.Write( "\t{0}", myCal.IsLeapYear( y, GregorianCalendar.CurrentEra ) );
      Console.WriteLine();

      // Checks five years in each of the eras.
      for ( int i = 0; i < myCal.Eras.Length; i++ )  {
         Console.Write( "Era {0}:\t", myCal.Eras[i] );
         for ( int y = 2001; y <= 2005; y++ )
            Console.Write( "\t{0}", myCal.IsLeapYear( y, myCal.Eras[i] ) );
         Console.WriteLine();
      }
   }
}

/*
This code produces the following output.

YEAR            2001    2002    2003    2004    2005
CurrentEra:     False   False   False   True    False
Era 1:          False   False   False   True    False

*/

Imports System.Globalization

Public Class SamplesGregorianCalendar   
   
   Public Shared Sub Main()

      ' Creates and initializes a GregorianCalendar.
      Dim myCal As New GregorianCalendar()

      ' Displays the header.
      Console.Write("YEAR" + ControlChars.Tab)
      Dim y As Integer
      For y = 2001 To 2005
         Console.Write(ControlChars.Tab + "{0}", y)
      Next y
      Console.WriteLine()

      ' Checks five years in the current era.
      Console.Write("CurrentEra:")
      For y = 2001 To 2005
         Console.Write(ControlChars.Tab + "{0}", myCal.IsLeapYear(y, GregorianCalendar.CurrentEra))
      Next y
      Console.WriteLine()

      ' Checks five years in each of the eras.
      Dim i As Integer
      For i = 0 To myCal.Eras.Length - 1
         Console.Write("Era {0}:" + ControlChars.Tab, myCal.Eras(i))
         For y = 2001 To 2005
            Console.Write(ControlChars.Tab + "{0}", myCal.IsLeapYear(y, myCal.Eras(i)))
         Next y
         Console.WriteLine()
      Next i

   End Sub

End Class


'This code produces the following output.
'
'YEAR            2001    2002    2003    2004    2005
'CurrentEra:     False   False   False   True    False
'Era 1:          False   False   False   True    False

注解

公历中的闰年定义为可均匀除以 4 的年份，除非它被 100 除。 但是，可除以 400 的年是闰年。 例如，1900 年不是闰年，而是 2000 年。 普通年份有 365 天，闰年有 366 天。

适用于

另请参阅