HebrewCalendar.AddYears(DateTime, Int32) 方法

定义

返回与指定 DateTime 相距指定年数的 DateTime

public:
 override DateTime AddYears(DateTime time, int years);
public override DateTime AddYears (DateTime time, int years);
override this.AddYears : DateTime * int -> DateTime
Public Overrides Function AddYears (time As DateTime, years As Integer) As DateTime

参数

time
DateTime

DateTime,将向其添加 years

years
Int32

要添加的年数。

返回

将指定年数添加到指定的 DateTime 中时得到的 DateTime

例外

生成的 DateTime 超出了支持的范围。

示例

下面的代码示例根据希伯来语日历显示 的 DateTime 多个组件的值。

using namespace System;
using namespace System::Globalization;
void DisplayValues( Calendar^ myCal, DateTime myDT )
{
   Console::WriteLine( "   Era:        {0}", myCal->GetEra( myDT ) );
   Console::WriteLine( "   Year:       {0}", myCal->GetYear( myDT ) );
   Console::WriteLine( "   Month:      {0}", myCal->GetMonth( myDT ) );
   Console::WriteLine( "   DayOfYear:  {0}", myCal->GetDayOfYear( myDT ) );
   Console::WriteLine( "   DayOfMonth: {0}", myCal->GetDayOfMonth( myDT ) );
   Console::WriteLine( "   DayOfWeek:  {0}", myCal->GetDayOfWeek( myDT ) );
   Console::WriteLine();
}

int main()
{
   
   // Sets a DateTime to April 3, 2002 of the Gregorian calendar.
   DateTime myDT = DateTime(2002,4,3,gcnew GregorianCalendar);
   
   // Creates an instance of the HebrewCalendar.
   HebrewCalendar^ myCal = gcnew HebrewCalendar;
   
   // Displays the values of the DateTime.
   Console::WriteLine( "April 3, 2002 of the Gregorian calendar equals the following in the Hebrew calendar:" );
   DisplayValues( myCal, myDT );
   
   // Adds two years and ten months.
   myDT = myCal->AddYears( myDT, 2 );
   myDT = myCal->AddMonths( myDT, 10 );
   
   // Displays the values of the DateTime.
   Console::WriteLine( "After adding two years and ten months:" );
   DisplayValues( myCal, myDT );
}

/*
This code produces the following output.

April 3, 2002 of the Gregorian calendar equals the following in the Hebrew calendar:
   Era:        1
   Year:       5762
   Month:      7
   DayOfYear:  198
   DayOfMonth: 21
   DayOfWeek:  Wednesday

After adding two years and ten months:
   Era:        1
   Year:       5765
   Month:      5
   DayOfYear:  138
   DayOfMonth: 21
   DayOfWeek:  Monday

*/
using System;
using System.Globalization;

public class SamplesHebrewCalendar  {

   public static void Main()  {

      // Sets a DateTime to April 3, 2002 of the Gregorian calendar.
      DateTime myDT = new DateTime( 2002, 4, 3, new GregorianCalendar() );

      // Creates an instance of the HebrewCalendar.
      HebrewCalendar myCal = new HebrewCalendar();

      // Displays the values of the DateTime.
      Console.WriteLine( "April 3, 2002 of the Gregorian calendar equals the following in the Hebrew calendar:" );
      DisplayValues( myCal, myDT );

      // Adds two years and ten months.
      myDT = myCal.AddYears( myDT, 2 );
      myDT = myCal.AddMonths( myDT, 10 );

      // Displays the values of the DateTime.
      Console.WriteLine( "After adding two years and ten months:" );
      DisplayValues( myCal, myDT );
   }

   public static void DisplayValues( Calendar myCal, DateTime myDT )  {
      Console.WriteLine( "   Era:        {0}", myCal.GetEra( myDT ) );
      Console.WriteLine( "   Year:       {0}", myCal.GetYear( myDT ) );
      Console.WriteLine( "   Month:      {0}", myCal.GetMonth( myDT ) );
      Console.WriteLine( "   DayOfYear:  {0}", myCal.GetDayOfYear( myDT ) );
      Console.WriteLine( "   DayOfMonth: {0}", myCal.GetDayOfMonth( myDT ) );
      Console.WriteLine( "   DayOfWeek:  {0}", myCal.GetDayOfWeek( myDT ) );
      Console.WriteLine();
   }
}

/*
This code produces the following output.

April 3, 2002 of the Gregorian calendar equals the following in the Hebrew calendar:
   Era:        1
   Year:       5762
   Month:      7
   DayOfYear:  198
   DayOfMonth: 21
   DayOfWeek:  Wednesday

After adding two years and ten months:
   Era:        1
   Year:       5765
   Month:      5
   DayOfYear:  138
   DayOfMonth: 21
   DayOfWeek:  Monday

*/
Imports System.Globalization


Public Class SamplesHebrewCalendar   

   Public Shared Sub Main()

      ' Sets a DateTime to April 3, 2002 of the Gregorian calendar.
      Dim myDT As New DateTime(2002, 4, 3, New GregorianCalendar())

      ' Creates an instance of the HebrewCalendar.
      Dim myCal As New HebrewCalendar()

      ' Displays the values of the DateTime.
      Console.WriteLine("April 3, 2002 of the Gregorian calendar equals the following in the Hebrew calendar:")
      DisplayValues(myCal, myDT)

      ' Adds two years and ten months.
      myDT = myCal.AddYears(myDT, 2)
      myDT = myCal.AddMonths(myDT, 10)

      ' Displays the values of the DateTime.
      Console.WriteLine("After adding two years and ten months:")
      DisplayValues(myCal, myDT)

   End Sub

   Public Shared Sub DisplayValues(myCal As Calendar, myDT As DateTime)
      Console.WriteLine("   Era:        {0}", myCal.GetEra(myDT))
      Console.WriteLine("   Year:       {0}", myCal.GetYear(myDT))
      Console.WriteLine("   Month:      {0}", myCal.GetMonth(myDT))
      Console.WriteLine("   DayOfYear:  {0}", myCal.GetDayOfYear(myDT))
      Console.WriteLine("   DayOfMonth: {0}", myCal.GetDayOfMonth(myDT))
      Console.WriteLine("   DayOfWeek:  {0}", myCal.GetDayOfWeek(myDT))
      Console.WriteLine()
   End Sub

End Class


'This code produces the following output.
'
'April 3, 2002 of the Gregorian calendar equals the following in the Hebrew calendar:
'   Era:        1
'   Year:       5762
'   Month:      7
'   DayOfYear:  198
'   DayOfMonth: 21
'   DayOfWeek:  Wednesday
'
'After adding two years and ten months:
'   Era:        1
'   Year:       5765
'   Month:      5
'   DayOfYear:  138
'   DayOfMonth: 21
'   DayOfWeek:  Monday

注解

类的 HebrewCalendar 此实现仅识别公历) 中的希伯来语年 5343 到 5999 (1583 到 2239。

如果生成的日期不是结果 DateTime 年份的月中的有效日期,则结果的日期部分将受到影响。 它更改为结果年份中结果月份的最后一个有效日期。 例如,切什万可以有29天或30天,具体取决于犹太节日的位置。 假设切什万今年有 30 天,下一年有 29 天。 如果指定的日期是当年切什万的第 30 天,值为 years 1,则生成的日期将是下一年切什万的第 29 天。

如果生成的月份不是结果 DateTime 年份中的有效月份,则结果的月份部分将受到影响。 它将更改为结果年份中最后一个有效月份。 例如,如果 参数中的 time 月份是闰年的第 13 个月,而 的值为 years 1,则结果 DateTime 中的月份是下一年的第 12 个月,即非闰年。 请注意,即使月份部分没有更改,它仍可能引用不同的月份。 例如,Adar Beit 是闰年的第 7 个月,而日产是普通年份的第 7 个月。

此实现仅支持当前时代。 因此, ArgumentException 如果生成的年份在指定的 DateTime的纪元之外,则引发 。

生成的 DateTime 的一天中的时间部分与指定的 DateTime保持相同。

如果 years 为负值,则生成的 DateTime 早于指定的 DateTime

Kind返回DateTime的值的 属性始终等于 DateTimeKind.Unspecified。 可以通过调用 DateTime.SpecifyKind 方法保留 Kind 参数的 time 属性,如以下示例所示。

returnTime = DateTime.SpecifyKind(cal.AddYears(time, years), time.Kind);
returnTime = DateTime.SpecifyKind(cal.AddYears(time, years), time.Kind)

适用于

另请参阅