Calendar.AddSeconds(DateTime, Int32) 方法
定义
重要
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public:
virtual DateTime AddSeconds(DateTime time, int seconds);
public virtual DateTime AddSeconds (DateTime time, int seconds);
abstract member AddSeconds : DateTime * int -> DateTime
override this.AddSeconds : DateTime * int -> DateTime
Public Overridable Function AddSeconds (time As DateTime, seconds As Integer) As DateTime
参数
- seconds
- Int32
要添加的秒数。
返回
将指定的秒数添加到指定的 DateTime 中时得到的 DateTime。
例外
得到的 DateTime 超出了此日历支持的范围。
seconds
超出了 DateTime 返回值支持的范围。
示例
下面的代码示例演示 类的成员 Calendar 。
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( " Hour: {0}", myCal->GetHour( myDT ) );
Console::WriteLine( " Minute: {0}", myCal->GetMinute( myDT ) );
Console::WriteLine( " Second: {0}", myCal->GetSecond( myDT ) );
Console::WriteLine( " Milliseconds: {0}", myCal->GetMilliseconds( myDT ) );
Console::WriteLine();
}
int main()
{
// Sets a DateTime to April 3, 2002 of the Gregorian calendar.
DateTime myDT = DateTime(2002,4,3,gcnew GregorianCalendar);
// Uses the default calendar of the InvariantCulture.
Calendar^ myCal = CultureInfo::InvariantCulture->Calendar;
// Displays the values of the DateTime.
Console::WriteLine( "April 3, 2002 of the Gregorian calendar:" );
DisplayValues( myCal, myDT );
// Adds 5 to every component of the DateTime.
myDT = myCal->AddYears( myDT, 5 );
myDT = myCal->AddMonths( myDT, 5 );
myDT = myCal->AddWeeks( myDT, 5 );
myDT = myCal->AddDays( myDT, 5 );
myDT = myCal->AddHours( myDT, 5 );
myDT = myCal->AddMinutes( myDT, 5 );
myDT = myCal->AddSeconds( myDT, 5 );
myDT = myCal->AddMilliseconds( myDT, 5 );
// Displays the values of the DateTime.
Console::WriteLine( "After adding 5 to each component of the DateTime:" );
DisplayValues( myCal, myDT );
}
/*
This code produces the following output.
April 3, 2002 of the Gregorian calendar:
Era: 1
Year: 2002
Month: 4
DayOfYear: 93
DayOfMonth: 3
DayOfWeek: Wednesday
Hour: 0
Minute: 0
Second: 0
Milliseconds: 0
After adding 5 to each component of the DateTime:
Era: 1
Year: 2007
Month: 10
DayOfYear: 286
DayOfMonth: 13
DayOfWeek: Saturday
Hour: 5
Minute: 5
Second: 5
Milliseconds: 5
*/
using System;
using System.Globalization;
public class SamplesCalendar {
public static void Main() {
// Sets a DateTime to April 3, 2002 of the Gregorian calendar.
DateTime myDT = new DateTime( 2002, 4, 3, new GregorianCalendar() );
// Uses the default calendar of the InvariantCulture.
Calendar myCal = CultureInfo.InvariantCulture.Calendar;
// Displays the values of the DateTime.
Console.WriteLine( "April 3, 2002 of the Gregorian calendar:" );
DisplayValues( myCal, myDT );
// Adds 5 to every component of the DateTime.
myDT = myCal.AddYears( myDT, 5 );
myDT = myCal.AddMonths( myDT, 5 );
myDT = myCal.AddWeeks( myDT, 5 );
myDT = myCal.AddDays( myDT, 5 );
myDT = myCal.AddHours( myDT, 5 );
myDT = myCal.AddMinutes( myDT, 5 );
myDT = myCal.AddSeconds( myDT, 5 );
myDT = myCal.AddMilliseconds( myDT, 5 );
// Displays the values of the DateTime.
Console.WriteLine( "After adding 5 to each component of the DateTime:" );
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( " Hour: {0}", myCal.GetHour( myDT ) );
Console.WriteLine( " Minute: {0}", myCal.GetMinute( myDT ) );
Console.WriteLine( " Second: {0}", myCal.GetSecond( myDT ) );
Console.WriteLine( " Milliseconds: {0}", myCal.GetMilliseconds( myDT ) );
Console.WriteLine();
}
}
/*
This code produces the following output.
April 3, 2002 of the Gregorian calendar:
Era: 1
Year: 2002
Month: 4
DayOfYear: 93
DayOfMonth: 3
DayOfWeek: Wednesday
Hour: 0
Minute: 0
Second: 0
Milliseconds: 0
After adding 5 to each component of the DateTime:
Era: 1
Year: 2007
Month: 10
DayOfYear: 286
DayOfMonth: 13
DayOfWeek: Saturday
Hour: 5
Minute: 5
Second: 5
Milliseconds: 5
*/
Imports System.Globalization
Public Class SamplesCalendar
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())
' Uses the default calendar of the InvariantCulture.
Dim myCal As Calendar = CultureInfo.InvariantCulture.Calendar
' Displays the values of the DateTime.
Console.WriteLine("April 3, 2002 of the Gregorian calendar:")
DisplayValues(myCal, myDT)
' Adds 5 to every component of the DateTime.
myDT = myCal.AddYears(myDT, 5)
myDT = myCal.AddMonths(myDT, 5)
myDT = myCal.AddWeeks(myDT, 5)
myDT = myCal.AddDays(myDT, 5)
myDT = myCal.AddHours(myDT, 5)
myDT = myCal.AddMinutes(myDT, 5)
myDT = myCal.AddSeconds(myDT, 5)
myDT = myCal.AddMilliseconds(myDT, 5)
' Displays the values of the DateTime.
Console.WriteLine("After adding 5 to each component of the DateTime:")
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(" Hour: {0}", myCal.GetHour(myDT))
Console.WriteLine(" Minute: {0}", myCal.GetMinute(myDT))
Console.WriteLine(" Second: {0}", myCal.GetSecond(myDT))
Console.WriteLine(" Milliseconds: {0}", myCal.GetMilliseconds(myDT))
Console.WriteLine()
End Sub
End Class
'This code produces the following output.
'
'April 3, 2002 of the Gregorian calendar:
' Era: 1
' Year: 2002
' Month: 4
' DayOfYear: 93
' DayOfMonth: 3
' DayOfWeek: Wednesday
' Hour: 0
' Minute: 0
' Second: 0
' Milliseconds: 0
'
'After adding 5 to each component of the DateTime:
' Era: 1
' Year: 2007
' Month: 10
' DayOfYear: 286
' DayOfMonth: 13
' DayOfWeek: Saturday
' Hour: 5
' Minute: 5
' Second: 5
' Milliseconds: 5
注解
值 seconds
将添加到指定的 DateTime中。 如果 seconds
为负数,则生成的 DateTime 早于指定的 DateTime。
如果生成的 DateTime 时间超出指定 DateTime的日期,则生成的日期部分将受到影响。 如果生成的 DateTime 日期在指定 DateTime的月份之外,则结果的月份部分将受到影响。 如果生成的月份在指定 DateTime的年份之外,则结果DateTime的年份部分将受到影响。 如果生成的 DateTime 年份在指定 DateTime的纪元之外,则生成的 纪元部分将受到影响。
Kind返回DateTime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.AddSeconds(time, seconds), time.Kind);
returnTime = DateTime.SpecifyKind(cal.AddSeconds(time, seconds), time.Kind)