TimeZone TimeZone TimeZone TimeZone Class

Definição

Aviso

Esta API agora é obsoleta.

Representa um fuso horário.Represents a time zone.

public ref class TimeZone abstract
[System.Runtime.InteropServices.ComVisible(true)]
[System.Obsolete("System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.")]
[System.Serializable]
public abstract class TimeZone
type TimeZone = class
Public MustInherit Class TimeZone
Herança
TimeZoneTimeZoneTimeZoneTimeZone
Atributos

Exemplos

O exemplo a seguir referencia e exibe TimeZone os elementos de classe selecionados.The following example references and displays selected TimeZone class elements.

// Example of selected TimeZone class elements.
using namespace System;
using namespace System::Globalization;
int main()
{
   String^ dataFmt = "{0,-30}{1}";
   String^ timeFmt = "{0,-30}{1:yyyy-MM-dd HH:mm}";
   Console::WriteLine( "This example of selected TimeZone class "
   "elements generates the following \n"
   "output, which varies depending on the "
   "time zone in which it is run.\n" );
   
   // Get the local time zone and the current local time and year.
   TimeZone^ localZone = TimeZone::CurrentTimeZone;
   DateTime currentDate = DateTime::Now;
   int currentYear = currentDate.Year;
   
   // Display the names for standard time and daylight saving 
   // time for the local time zone.
   Console::WriteLine( dataFmt, "Standard time name:", localZone->StandardName );
   Console::WriteLine( dataFmt, "Daylight saving time name:", localZone->DaylightName );
   
   // Display the current date and time and show if they occur 
   // in daylight saving time.
   Console::WriteLine( String::Concat( "\n", timeFmt ), "Current date and time:", currentDate );
   Console::WriteLine( dataFmt, "Daylight saving time?", localZone->IsDaylightSavingTime( currentDate ) );
   
   // Get the current Coordinated Universal Time (UTC) and UTC 
   // offset.
   DateTime currentUTC = localZone->ToUniversalTime( currentDate );
   TimeSpan currentOffset = localZone->GetUtcOffset( currentDate );
   Console::WriteLine( timeFmt, "Coordinated Universal Time:", currentUTC );
   Console::WriteLine( dataFmt, "UTC offset:", currentOffset );
   
   // Get the DaylightTime object for the current year.
   DaylightTime^ daylight = localZone->GetDaylightChanges( currentYear );
   
   // Display the daylight saving time range for the current year.
   Console::WriteLine( "\nDaylight saving time for year {0}:", currentYear );
   Console::WriteLine( "{0:yyyy-MM-dd HH:mm} to "
   "{1:yyyy-MM-dd HH:mm}, delta: {2}", daylight->Start, daylight->End, daylight->Delta );
}

/*
This example of selected TimeZone class elements generates the following
output, which varies depending on the time zone in which it is run.

Standard time name:           Pacific Standard Time
Daylight saving time name:    Pacific Daylight Time

Current date and time:        2006-01-06 16:47
Daylight saving time?         False
Coordinated Universal Time:   2006-01-07 00:47
UTC offset:                   -08:00:00

Daylight saving time for year 2006:
2006-04-02 02:00 to 2006-10-29 02:00, delta: 01:00:00
*/
// Example of selected TimeZone class elements.
using System;
using System.Globalization;

class TimeZoneDemo
{
    static void Main( )
    {
        const string dataFmt = "{0,-30}{1}";
        const string timeFmt = "{0,-30}{1:yyyy-MM-dd HH:mm}";

        Console.WriteLine(
            "This example of selected TimeZone class " +
            "elements generates the following \n" +
            "output, which varies depending on the " +
            "time zone in which it is run.\n" );

        // Get the local time zone and the current local time and year.
        TimeZone localZone = TimeZone.CurrentTimeZone;
        DateTime currentDate = DateTime.Now;
        int      currentYear = currentDate.Year;

        // Display the names for standard time and daylight saving 
        // time for the local time zone.
        Console.WriteLine( dataFmt, "Standard time name:", 
            localZone.StandardName );
        Console.WriteLine( dataFmt, "Daylight saving time name:", 
            localZone.DaylightName );

        // Display the current date and time and show if they occur 
        // in daylight saving time.
        Console.WriteLine( "\n" + timeFmt, "Current date and time:",
            currentDate );
        Console.WriteLine( dataFmt, "Daylight saving time?", 
            localZone.IsDaylightSavingTime( currentDate ) );

        // Get the current Coordinated Universal Time (UTC) and UTC 
        // offset.
        DateTime currentUTC = 
            localZone.ToUniversalTime( currentDate );
        TimeSpan currentOffset = 
            localZone.GetUtcOffset( currentDate );

        Console.WriteLine( timeFmt, "Coordinated Universal Time:", 
            currentUTC );
        Console.WriteLine( dataFmt, "UTC offset:", currentOffset );

        // Get the DaylightTime object for the current year.
        DaylightTime daylight = 
            localZone.GetDaylightChanges( currentYear );

        // Display the daylight saving time range for the current year.
        Console.WriteLine( 
            "\nDaylight saving time for year {0}:", currentYear );
        Console.WriteLine( "{0:yyyy-MM-dd HH:mm} to " +
            "{1:yyyy-MM-dd HH:mm}, delta: {2}", 
            daylight.Start, daylight.End, daylight.Delta );
    } 
} 

/*
This example of selected TimeZone class elements generates the following
output, which varies depending on the time zone in which it is run.

Standard time name:           Pacific Standard Time
Daylight saving time name:    Pacific Daylight Time

Current date and time:        2006-01-06 16:47
Daylight saving time?         False
Coordinated Universal Time:   2006-01-07 00:47
UTC offset:                   -08:00:00

Daylight saving time for year 2006:
2006-04-02 02:00 to 2006-10-29 02:00, delta: 01:00:00
*/ 
' Example of selected TimeZone class elements.
Imports System.Globalization

Module TimeZoneDemo

    Sub Main( )

        Const dataFmt As String = "{0,-30}{1}"
        Const timeFmt As String = "{0,-30}{1:yyyy-MM-dd HH:mm}"

        Console.WriteLine( "This example of selected " & _
            "TimeZone class elements generates the following " & _
            vbCrLf & "output, which varies depending on the " & _
            "time zone in which it is run." & vbCrLf )

        ' Get the local time zone and the current local time and year.
        Dim localZone As TimeZone = TimeZone.CurrentTimeZone
        Dim currentDate As DateTime = DateTime.Now
        Dim currentYear As Integer = currentDate.Year

        ' Display the names for standard time and daylight saving 
        ' time for the local time zone.
        Console.WriteLine( dataFmt, "Standard time name:", _
            localZone.StandardName )
        Console.WriteLine( dataFmt, "Daylight saving time name:", _
            localZone.DaylightName )

        ' Display the current date and time and show if they occur 
        ' in daylight saving time.
        Console.WriteLine( vbCrLf & timeFmt, _
            "Current date and time:", currentDate )
        Console.WriteLine( dataFmt, "Daylight saving time?", _
            localZone.IsDaylightSavingTime( currentDate ) )

        ' Get the current Coordinated Universal Time (UTC) and UTC 
        ' offset.
        Dim currentUTC As DateTime = _
            localZone.ToUniversalTime( currentDate )
        Dim currentOffset As TimeSpan = _
            localZone.GetUtcOffset( currentDate )

        Console.WriteLine( timeFmt, "Coordinated Universal Time:", _
            currentUTC )
        Console.WriteLine( dataFmt, "UTC offset:", currentOffset )

        ' Get the DaylightTime object for the current year.
        Dim daylight As DaylightTime = _
            localZone.GetDaylightChanges( currentYear )

        ' Display the daylight saving time range for the current year.
        Console.WriteLine( vbCrLf & _
            "Daylight saving time for year {0}:", currentYear )
        Console.WriteLine( "{0:yyyy-MM-dd HH:mm} to " & _
            "{1:yyyy-MM-dd HH:mm}, delta: {2}", _
            daylight.Start, daylight.End, daylight.Delta )
    End Sub 
End Module 

'This example of selected TimeZone class elements generates the following
'output, which varies depending on the time zone in which it is run.
'
'Standard time name:           Pacific Standard Time
'Daylight saving time name:    Pacific Daylight Time
'
'Current date and time:        2006-01-06 16:47
'Daylight saving time?         False
'Coordinated Universal Time:   2006-01-07 00:47
'UTC offset:                   -08:00:00
'
'Daylight saving time for year 2006:
'2006-04-02 02:00 to 2006-10-29 02:00, delta: 01:00:00

Comentários

Um fuso horário é uma região geográfica na qual o mesmo horário padrão é usado.A time zone is a geographical region in which the same standard time is used.

Importante

Sempre que possível, use TimeZoneInfo a classe em vez TimeZone da classe.Whenever possible, use the TimeZoneInfo class instead of the TimeZone class.

Você pode usar a TimeZone classe para recuperar informações sobre o fuso horário atual e para converter horários de hora local em UTC (tempo Universal Coordenado) ou vice-versa.You can use the TimeZone class to retrieve information about the current time zone, and to convert times from local time to Coordinated Universal Time (UTC) or vice versa. No entanto, você não TimeZone pode usar a classe para representar fusos horários diferentes da zona local ou para tratar conversões de data e hora de um fuso horário para outro.However, you cannot use the TimeZone class to represent time zones other than the local zone or to handle date and time conversions from one time zone to another. Para essa finalidade, use a TimeZoneInfo classe.For this purpose, use the TimeZoneInfo class. Você pode usar essa classe para recuperar informações em qualquer fuso horário definido no sistema local, para criar fusos horários personalizados e para converter horários de um fuso horário para outro.You can use this class to retrieve information on any time zone defined on the local system, to create custom time zones, and to convert times from one time zone to another.

A TimeZone classe dá suporte apenas a uma única regra de ajuste de horário de verão para o fuso horário local.The TimeZone class supports only a single daylight saving time adjustment rule for the local time zone. Como resultado, a TimeZone classe pode reportar com precisão as informações de horário de verão ou converter entre UTC e hora local apenas para o período em que a regra de ajuste mais recente está em vigor.As a result, the TimeZone class can accurately report daylight saving time information or convert between UTC and local time only for the period in which the latest adjustment rule is in effect. Por outro lado, TimeZoneInfo a classe dá suporte a várias regras de ajuste, o que torna possível trabalhar com dados de fuso horário históricos.In contrast, the TimeZoneInfo class supports multiple adjustment rules, which makes it possible to work with historic time zone data.

Notas aos Herdeiros

Além de fornecer implementações para seus abstract Membros (aqueles marcados MustOverride em Visual Basic), é importante que as classes derivadas da TimeZone substituição do comportamento padrão do ToLocalTime(DateTime) método.In addition to providing implementations for its abstract members (those marked MustOverride in Visual Basic), it is important that classes derived from TimeZone override the default behavior of the ToLocalTime(DateTime) method. Isso ocorre porque o comportamento padrão do ToLocalTime(DateTime) no .NET Framework versão 2,0 não depende de uma chamada para GetUtcOffset(DateTime), como fazia nas versões 1,0 e 1,1 do .NET Framework.This is because the default behavior of ToLocalTime(DateTime) in the .NET Framework version 2.0 does not depend on a call to GetUtcOffset(DateTime), as it did in the .NET Framework versions 1.0 and 1.1. Para obter detalhes, consulte ToLocalTime(DateTime) o método.For details, see the ToLocalTime(DateTime) method.

Construtores

TimeZone() TimeZone() TimeZone() TimeZone()

Inicializa uma nova instância da classe TimeZone.Initializes a new instance of the TimeZone class.

Propriedades

CurrentTimeZone CurrentTimeZone CurrentTimeZone CurrentTimeZone

Obtém o fuso horário do computador atual.Gets the time zone of the current computer.

DaylightName DaylightName DaylightName DaylightName

Obtém o nome do fuso horário do horário de verão.Gets the daylight saving time zone name.

StandardName StandardName StandardName StandardName

Obtém o nome do fuso horário padrão.Gets the standard time zone name.

Métodos

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determina se o objeto especificado é igual ao objeto atual.Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetDaylightChanges(Int32) GetDaylightChanges(Int32) GetDaylightChanges(Int32) GetDaylightChanges(Int32)

Retorna o período de horário de verão para determinado ano.Returns the daylight saving time period for a particular year.

GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serve como a função de hash padrão.Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Obtém o Type da instância atual.Gets the Type of the current instance.

(Inherited from Object)
GetUtcOffset(DateTime) GetUtcOffset(DateTime) GetUtcOffset(DateTime) GetUtcOffset(DateTime)

Retorna a diferença UTC (Tempo Universal Coordenado) para a hora local especificada.Returns the Coordinated Universal Time (UTC) offset for the specified local time.

IsDaylightSavingTime(DateTime) IsDaylightSavingTime(DateTime) IsDaylightSavingTime(DateTime) IsDaylightSavingTime(DateTime)

Retorna um valor que indica se a data e hora especificadas estão dentro de um período de horário de verão.Returns a value indicating whether the specified date and time is within a daylight saving time period.

IsDaylightSavingTime(DateTime, DaylightTime) IsDaylightSavingTime(DateTime, DaylightTime) IsDaylightSavingTime(DateTime, DaylightTime) IsDaylightSavingTime(DateTime, DaylightTime)

Retorna um valor que indica se a data e hora especificada está dentro de um período de horário de verão especificado.Returns a value indicating whether the specified date and time is within the specified daylight saving time period.

MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Cria uma cópia superficial do Object atual.Creates a shallow copy of the current Object.

(Inherited from Object)
ToLocalTime(DateTime) ToLocalTime(DateTime) ToLocalTime(DateTime) ToLocalTime(DateTime)

Retorna a hora local que corresponde a um valor de data e hora especificado.Returns the local time that corresponds to a specified date and time value.

ToString() ToString() ToString() ToString()

Retorna uma cadeia de caracteres que representa o objeto atual.Returns a string that represents the current object.

(Inherited from Object)
ToUniversalTime(DateTime) ToUniversalTime(DateTime) ToUniversalTime(DateTime) ToUniversalTime(DateTime)

Retorna o UTC (Tempo Universal Coordenado) que corresponde ao tempo especificado.Returns the Coordinated Universal Time (UTC) that corresponds to a specified time.

Aplica-se a

Veja também