TimeZone 類別

定義

命名空間:

System

組件:

System.Runtime.dll

來源:

TimeZone.cs

警告

System.TimeZone has been deprecated. Investigate the use of System.TimeZoneInfo instead.

表示時區。

public ref class TimeZone abstract

[System.Obsolete("System.TimeZone has been deprecated. Investigate the use of System.TimeZoneInfo instead.")]
public abstract class TimeZone

[<System.Obsolete("System.TimeZone has been deprecated. Investigate the use of System.TimeZoneInfo instead.")>]
type TimeZone = class

Public MustInherit Class TimeZone

繼承

Object

TimeZone

屬性

ObsoleteAttribute

範例

下列範例會參考並顯示選取 TimeZone 類別專案。

// 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

備註

時區是使用相同標準時間的地理區域。

重要

盡可能使用 TimeZoneInfo 類別，而不是 TimeZone 類別。

您可以使用 TimeZone 類別來擷取目前時區的相關信息，並將時間從當地時間轉換為國際標準時間（UTC），反之亦然。 不過，您無法使用 TimeZone 類別來表示本地區域以外的時區，或處理從某個時區到另一個時區的日期和時間轉換。 為此，請使用 TimeZoneInfo 類別。 您可以使用這個類別來擷取本機系統上所定義之任何時區的資訊、建立自定義時區，以及將時間從某個時區轉換成另一個時區。

TimeZone 類別僅支持當地時區的單一日光節約時間調整規則。 因此，TimeZone 類別可以準確地報告日光節約時間資訊，或只在最新調整規則生效的期間，於UTC和當地時間之間轉換。 相反地，TimeZoneInfo 類別支援多個調整規則，這可讓您使用歷史時區數據。

給實施者的注意事項

除了提供其 abstract 成員的實作（在 Visual Basic 中標示為 MustOverride 的實作之外，衍生自 TimeZone 的類別必須覆寫 ToLocalTime(DateTime) 方法的預設行為。 這是因為 .NET Framework 2.0 版中 ToLocalTime(DateTime) 的預設行為不取決於對 GetUtcOffset(DateTime)的呼叫，如同 .NET Framework 1.0 和 1.1 版所做的一樣。 如需詳細資訊，請參閱 ToLocalTime(DateTime) 方法。

建構函式

TimeZone()

已淘汰. 初始化 TimeZone 類別的新實例。

屬性

CurrentTimeZone	已淘汰. 取得目前計算機的時區。
DaylightName	已淘汰. 取得日光節約時區名稱。
StandardName	已淘汰. 取得標準時區名稱。

方法

Equals(Object)	已淘汰. 判斷指定的物件是否等於目前的物件。 (繼承來源 Object)
GetDaylightChanges(Int32)	已淘汰. 傳回特定年份的日光節約時間週期。
GetHashCode()	已淘汰. 做為預設哈希函式。 (繼承來源 Object)
GetType()	已淘汰. 取得目前實例的 Type。 (繼承來源 Object)
GetUtcOffset(DateTime)	已淘汰. 傳回指定當地時間的國際標準時間 （UTC） 位移。
IsDaylightSavingTime(DateTime, DaylightTime)	已淘汰. 傳回值，指出指定的日期和時間是否在指定的日光節約時間週期內。
IsDaylightSavingTime(DateTime)	已淘汰. 傳回值，指出指定的日期和時間是否在日光節約時間週期內。
MemberwiseClone()	已淘汰. 建立目前 Object的淺層複本。 (繼承來源 Object)
ToLocalTime(DateTime)	已淘汰. 傳回對應至指定日期和時間值的當地時間。
ToString()	已淘汰. 傳回表示目前 物件的字串。 (繼承來源 Object)
ToUniversalTime(DateTime)	已淘汰. 傳回對應至指定時間的國際標準時間（UTC）。

另請參閱

• DateTime
• DateTimeOffset
• TimeZoneInfo