TimeZone TimeZone TimeZone TimeZone Class

Définition

Avertissement

Cette API est désormais obsolète.

Représente un fuseau horaire.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
Héritage
TimeZoneTimeZoneTimeZoneTimeZone
Attributs

Exemples

Les références de l’exemple et les affiche sélectionné suivants TimeZone classe les éléments.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
Imports System.Globalization
Imports Microsoft.VisualBasic

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

Remarques

Un fuseau horaire est une région géographique dans laquelle la même heure standard est utilisée.A time zone is a geographical region in which the same standard time is used.

Important

Si possible, utilisez le TimeZoneInfo classe au lieu du TimeZone classe.Whenever possible, use the TimeZoneInfo class instead of the TimeZone class.

Vous pouvez utiliser la TimeZone classe à récupérer des informations sur le fuseau horaire actuel et convertir des heures de l’heure locale en temps universel coordonné (UTC), 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. Toutefois, vous ne pouvez pas utiliser le TimeZone classe pour représenter des fuseaux horaires différents de la zone locale ou pour gérer les conversions de date et l’heure d’un fuseau horaire à un autre.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. Pour ce faire, utilisez la TimeZoneInfo classe.For this purpose, use the TimeZoneInfo class. Vous pouvez utiliser cette classe pour récupérer des informations sur tout fuseau horaire défini sur le système local, pour créer des fuseaux horaires personnalisés et pour convertir les heures d’un fuseau horaire à un autre.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.

Le TimeZone classe prend en charge uniquement une règle d’ajustement heure unique pour le fuseau horaire local.The TimeZone class supports only a single daylight saving time adjustment rule for the local time zone. Par conséquent, la TimeZone classe pouvez précisément recueillent des informations de l’heure d’été ou convertir entre UTC et l’heure locale uniquement pour la période pendant laquelle la dernière règle d’ajustement est en vigueur.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. En revanche, la TimeZoneInfo classe prend en charge plusieurs règles d’ajustement, ce qui permet de travailler avec des données de fuseau horaire historiques.In contrast, the TimeZoneInfo class supports multiple adjustment rules, which makes it possible to work with historic time zone data.

Notes pour les héritiers

En plus de fournir des implémentations pour ses abstract membres (celles marquées comme MustOverride en Visual Basic), il est important que les classes dérivées de TimeZone remplacer le comportement par défaut de la ToLocalTime(DateTime) (méthode).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. Il s’agit, car le comportement par défaut de ToLocalTime(DateTime) dans le .NET Framework version 2.0 ne dépend pas un appel à GetUtcOffset(DateTime), comme c’était le cas dans les versions 1.0 et 1.1 du .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. Pour plus d’informations, consultez le ToLocalTime(DateTime) (méthode).For details, see the ToLocalTime(DateTime) method.

Constructeurs

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

Initialise une nouvelle instance de la classe TimeZone.Initializes a new instance of the TimeZone class.

Propriétés

CurrentTimeZone CurrentTimeZone CurrentTimeZone CurrentTimeZone

Obtient le fuseau horaire de votre ordinateur actuel.Gets the time zone of the current computer.

DaylightName DaylightName DaylightName DaylightName

Obtient le nom du fuseau horaire appliquant l'heure d'été.Gets the daylight saving time zone name.

StandardName StandardName StandardName StandardName

Obtient le nom du fuseau horaire standard.Gets the standard time zone name.

Méthodes

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

Détermine si l'objet spécifié est identique à l'objet actuel.Determines whether the specified object is equal to the current object.

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

Retourne la période d'application de l'heure d'été au cours d'une année particulière.Returns the daylight saving time period for a particular year.

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

Fait office de fonction de hachage par défaut.Serves as the default hash function.

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

Obtient le Type de l'instance actuelle.Gets the Type of the current instance.

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

Retourne l'offset en temps universel coordonné (UTC, Coordinated Universal Time) pour le fuseau horaire spécifié.Returns the Coordinated Universal Time (UTC) offset for the specified local time.

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

Retourne une valeur indiquant si l'horodatage spécifié se trouve dans une période d'application de l'heure d'été.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)

Retourne une valeur indiquant si l'horodatage spécifié se trouve dans la période d'application de l'heure d'été déterminée.Returns a value indicating whether the specified date and time is within the specified daylight saving time period.

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

Crée une copie superficielle du Object actuel.Creates a shallow copy of the current Object.

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

Retourne l'heure locale qui correspond à une valeur d'heure et de date spécifiée.Returns the local time that corresponds to a specified date and time value.

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

Retourne une chaîne qui représente l'objet actuel.Returns a string that represents the current object.

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

Retourne le temps universel (UTC, Universal Time Coordinated) qui correspond à une heure spécifiée.Returns the Coordinated Universal Time (UTC) that corresponds to a specified time.

S’applique à

Voir aussi