TimeZone.CurrentTimeZone Propriété
Définition
Important
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Obtient le fuseau horaire de votre ordinateur actuel.
public:
static property TimeZone ^ CurrentTimeZone { TimeZone ^ get(); };public static TimeZone CurrentTimeZone { get; }member this.CurrentTimeZone : TimeZonePublic Shared ReadOnly Property CurrentTimeZone As TimeZoneValeur de propriété
Un objet TimeZone qui représente le fuseau horaire local actuel.
Exemples
L’exemple suivant référence la CurrentTimeZone propriété et affiche les noms pour l’heure standard et l’heure d’été pour le fuseau horaire local.
// 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
Remarques
La CurrentTimeZone propriété correspond à la TimeZoneInfo.Local propriété. Dans la mesure du possible, utilisez la TimeZoneInfo.Local propriété.
Notes pour les appelants
Les données de fuseau horaire local sont mises en cache après CurrentTimeZone avoir été utilisées pour récupérer des informations de fuseau horaire. Si le fuseau horaire local du système change par la suite, la CurrentTimeZone propriété ne reflète pas cette modification. Si vous devez gérer les modifications de fuseau horaire pendant l’exécution de votre application, utilisez la TimeZoneInfo classe et appelez sa ClearCachedData() méthode.