TimeZoneInfo.GetUtcOffset Metodo

Riferimento

Definizione

Spazio dei nomi:: System

Assembly:: System.Runtime.dll

Assembly:: System.Core.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Importante

Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.

Calcola l'offset o differenza tra l'ora in questo fuso orario e l'ora UTC (Coordinated Universal Time) per una particolare data e ora.

Overload

GetUtcOffset(DateTime)	Calcola l'offset o differenza tra l'ora in questo fuso orario e l'ora UTC (Coordinated Universal Time) per una particolare data e ora.
GetUtcOffset(DateTimeOffset)	Calcola l'offset o differenza tra l'ora in questo fuso orario e l'ora UTC (Coordinated Universal Time) per una particolare data e ora.

GetUtcOffset(DateTime)

Origine:: TimeZoneInfo.cs

Origine:: TimeZoneInfo.cs

Origine:: TimeZoneInfo.cs

Calcola l'offset o differenza tra l'ora in questo fuso orario e l'ora UTC (Coordinated Universal Time) per una particolare data e ora.

public:
 TimeSpan GetUtcOffset(DateTime dateTime);

public TimeSpan GetUtcOffset (DateTime dateTime);

member this.GetUtcOffset : DateTime -> TimeSpan

Public Function GetUtcOffset (dateTime As DateTime) As TimeSpan

Parametri

dateTime: DateTime

Data e ora per la quale determinare l'offset.

Restituisce

TimeSpan

Oggetto che indica la differenza di ora tra i due fusi orari.

Esempio

Nell'esempio seguente viene illustrato l'uso GetUtcOffset(DateTime) del metodo con fusi orari diversi e con valori di data diversi con valori di proprietà diversi Kind .

using System;

[assembly:CLSCompliant(true)]
namespace TimeZoneInfoCode
{
   public class TimeOffsets
   {
      public static void Main()
      {
         TimeOffsets timeoff = new TimeOffsets();
         TimeZoneInfo cst = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time");
   
         timeoff.ShowOffset(new DateTime(2006, 6, 12, 11, 0, 0), TimeZoneInfo.Local);
         timeoff.ShowOffset(new DateTime(2007, 11, 4, 1, 0, 0), TimeZoneInfo.Local);
         timeoff.ShowOffset(new DateTime(2006, 12, 10, 15, 0, 0), TimeZoneInfo.Local);
         timeoff.ShowOffset(new DateTime(2007, 3, 11, 2, 30, 0), TimeZoneInfo.Local);
         timeoff.ShowOffset(DateTime.UtcNow, TimeZoneInfo.Local);
         timeoff.ShowOffset(new DateTime(2006, 6, 12, 11, 0, 0), TimeZoneInfo.Utc);
         timeoff.ShowOffset(new DateTime(2007, 11, 4, 1, 0, 0), TimeZoneInfo.Utc);
         timeoff.ShowOffset(new DateTime(2006, 12, 10, 3, 0, 0), TimeZoneInfo.Utc);
         timeoff.ShowOffset(new DateTime(2007, 3, 11, 2, 30, 0), TimeZoneInfo.Utc);
         timeoff.ShowOffset(DateTime.Now, TimeZoneInfo.Utc);
         timeoff.ShowOffset(new DateTime(2006, 6, 12, 11, 0, 0), cst);
         timeoff.ShowOffset(new DateTime(2007, 11, 4, 1, 0, 0), cst);
         timeoff.ShowOffset(new DateTime(2006, 12, 10, 15, 0, 0), cst);
         timeoff.ShowOffset(new DateTime(2007, 3, 11, 2, 30, 0, 0), cst);
         timeoff.ShowOffset(new DateTime(2007, 11, 14, 00, 00, 00, DateTimeKind.Local), cst);
      }
      
      private void ShowOffset(DateTime time, TimeZoneInfo timeZone)
      {
         DateTime convertedTime = time;  
         TimeSpan offset;
         
         if (time.Kind == DateTimeKind.Local && ! timeZone.Equals(TimeZoneInfo.Local)) 
            convertedTime = TimeZoneInfo.ConvertTime(time, TimeZoneInfo.Local, timeZone);
         else if (time.Kind == DateTimeKind.Utc && ! timeZone.Equals(TimeZoneInfo.Utc)) 
            convertedTime = TimeZoneInfo.ConvertTime(time, TimeZoneInfo.Utc, timeZone);         
   
         offset = timeZone.GetUtcOffset(time);
         if (time == convertedTime)
         {
            Console.WriteLine("{0} {1} ", time, 
                              timeZone.IsDaylightSavingTime(time) ? timeZone.DaylightName : timeZone.StandardName);
            Console.WriteLine("   It differs from UTC by {0} hours, {1} minutes.", 
                               offset.Hours, 
                               offset.Minutes);
         }
         else
         {
            Console.WriteLine("{0} {1} ", time, 
                              time.Kind == DateTimeKind.Utc ? "UTC" :  TimeZoneInfo.Local.Id);       
            Console.WriteLine("   converts to {0} {1}.", 
                              convertedTime, 
                              timeZone.Id);
            Console.WriteLine("   It differs from UTC by {0} hours, {1} minutes.", 
                              offset.Hours, offset.Minutes);  
         }
         Console.WriteLine();                                             
      }
   }
}
// The example produces the following output:
//
//       6/12/2006 11:00:00 AM Pacific Daylight Time 
//          It differs from UTC by -7 hours, 0 minutes.
//       
//       11/4/2007 1:00:00 AM Pacific Standard Time 
//          It differs from UTC by -8 hours, 0 minutes.
//       
//       12/10/2006 3:00:00 PM Pacific Standard Time 
//          It differs from UTC by -8 hours, 0 minutes.
//       
//       3/11/2007 2:30:00 AM Pacific Standard Time 
//          It differs from UTC by -8 hours, 0 minutes.
//       
//       2/2/2007 8:35:46 PM UTC 
//          converts to 2/2/2007 12:35:46 PM Pacific Standard Time.
//          It differs from UTC by -8 hours, 0 minutes.
//       
//       6/12/2006 11:00:00 AM UTC 
//          It differs from UTC by 0 hours, 0 minutes.
//       
//       11/4/2007 1:00:00 AM UTC 
//          It differs from UTC by 0 hours, 0 minutes.
//       
//       12/10/2006 3:00:00 AM UTC 
//          It differs from UTC by 0 hours, 0 minutes.
//       
//       3/11/2007 2:30:00 AM UTC 
//          It differs from UTC by 0 hours, 0 minutes.
//       
//       2/2/2007 12:35:46 PM Pacific Standard Time 
//          converts to 2/2/2007 8:35:46 PM UTC.
//          It differs from UTC by 0 hours, 0 minutes.
//       
//       6/12/2006 11:00:00 AM Central Daylight Time 
//          It differs from UTC by -5 hours, 0 minutes.
//       
//       11/4/2007 1:00:00 AM Central Standard Time 
//          It differs from UTC by -6 hours, 0 minutes.
//       
//       12/10/2006 3:00:00 PM Central Standard Time 
//          It differs from UTC by -6 hours, 0 minutes.
//       
//       3/11/2007 2:30:00 AM Central Standard Time 
//          It differs from UTC by -6 hours, 0 minutes.
//       
//       11/14/2007 12:00:00 AM Pacific Standard Time 
//          converts to 11/14/2007 2:00:00 AM Central Standard Time.
//          It differs from UTC by -6 hours, 0 minutes.

open System

let showOffset (time: DateTime) (timeZone: TimeZoneInfo) =
    let convertedTime = 
        match time.Kind with
        | DateTimeKind.Local when not (timeZone.Equals TimeZoneInfo.Local) ->
            TimeZoneInfo.ConvertTime(time, TimeZoneInfo.Local, timeZone)
        | DateTimeKind.Utc when not (timeZone.Equals TimeZoneInfo.Utc) -> 
            TimeZoneInfo.ConvertTime(time, TimeZoneInfo.Utc, timeZone)         
        | _ -> time

    let offset = timeZone.GetUtcOffset time
    if time = convertedTime then
        printfn $"{time} {if timeZone.IsDaylightSavingTime time then timeZone.DaylightName else timeZone.StandardName} "
        printfn $"   It differs from UTC by {offset.Hours} hours, {offset.Minutes} minutes."
    else
        printfn $"""{time} {if time.Kind = DateTimeKind.Utc then "UTC" else TimeZoneInfo.Local.Id} """       
        printfn $"   converts to {convertedTime} {timeZone.Id}." 
        printfn $"   It differs from UTC by {offset.Hours} hours, {offset.Minutes} minutes."  
    printfn ""                                             

let cst = TimeZoneInfo.FindSystemTimeZoneById "Central Standard Time"

showOffset (DateTime(2006, 6, 12, 11, 0, 0)) TimeZoneInfo.Local
showOffset (DateTime(2007, 11, 4, 1, 0, 0)) TimeZoneInfo.Local
showOffset (DateTime(2006, 12, 10, 15, 0, 0)) TimeZoneInfo.Local
showOffset (DateTime(2007, 3, 11, 2, 30, 0)) TimeZoneInfo.Local
showOffset DateTime.UtcNow TimeZoneInfo.Local
showOffset (DateTime(2006, 6, 12, 11, 0, 0)) TimeZoneInfo.Utc
showOffset (DateTime(2007, 11, 4, 1, 0, 0)) TimeZoneInfo.Utc
showOffset (DateTime(2006, 12, 10, 3, 0, 0)) TimeZoneInfo.Utc
showOffset (DateTime(2007, 3, 11, 2, 30, 0)) TimeZoneInfo.Utc
showOffset DateTime.Now TimeZoneInfo.Utc
showOffset (DateTime(2006, 6, 12, 11, 0, 0)) cst
showOffset (DateTime(2007, 11, 4, 1, 0, 0)) cst
showOffset (DateTime(2006, 12, 10, 15, 0, 0)) cst
showOffset (DateTime(2007, 3, 11, 2, 30, 0, 0)) cst
showOffset (DateTime(2007, 11, 14, 00, 00, 00, DateTimeKind.Local)) cst

// The example produces the following output:
//
//       6/12/2006 11:00:00 AM Pacific Daylight Time 
//          It differs from UTC by -7 hours, 0 minutes.
//       
//       11/4/2007 1:00:00 AM Pacific Standard Time 
//          It differs from UTC by -8 hours, 0 minutes.
//       
//       12/10/2006 3:00:00 PM Pacific Standard Time 
//          It differs from UTC by -8 hours, 0 minutes.
//       
//       3/11/2007 2:30:00 AM Pacific Standard Time 
//          It differs from UTC by -8 hours, 0 minutes.
//       
//       2/2/2007 8:35:46 PM UTC 
//          converts to 2/2/2007 12:35:46 PM Pacific Standard Time.
//          It differs from UTC by -8 hours, 0 minutes.
//       
//       6/12/2006 11:00:00 AM UTC 
//          It differs from UTC by 0 hours, 0 minutes.
//       
//       11/4/2007 1:00:00 AM UTC 
//          It differs from UTC by 0 hours, 0 minutes.
//       
//       12/10/2006 3:00:00 AM UTC 
//          It differs from UTC by 0 hours, 0 minutes.
//       
//       3/11/2007 2:30:00 AM UTC 
//          It differs from UTC by 0 hours, 0 minutes.
//       
//       2/2/2007 12:35:46 PM Pacific Standard Time 
//          converts to 2/2/2007 8:35:46 PM UTC.
//          It differs from UTC by 0 hours, 0 minutes.
//       
//       6/12/2006 11:00:00 AM Central Daylight Time 
//          It differs from UTC by -5 hours, 0 minutes.
//       
//       11/4/2007 1:00:00 AM Central Standard Time 
//          It differs from UTC by -6 hours, 0 minutes.
//       
//       12/10/2006 3:00:00 PM Central Standard Time 
//          It differs from UTC by -6 hours, 0 minutes.
//       
//       3/11/2007 2:30:00 AM Central Standard Time 
//          It differs from UTC by -6 hours, 0 minutes.
//       
//       11/14/2007 12:00:00 AM Pacific Standard Time 
//          converts to 11/14/2007 2:00:00 AM Central Standard Time.
//          It differs from UTC by -6 hours, 0 minutes.

Option Strict On

<Assembly: CLSCompliant(True)>
Module TimeOffsets
   Public Sub Main()
      Dim cst As TimeZoneInfo = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time")

      ShowOffset(#6/12/2006 11:00AM#, TimeZoneInfo.Local)
      ShowOffset(#11/4/2007 1:00AM#, TimeZoneInfo.Local)
      ShowOffset(#12/10/2006 3:00PM#, TimeZoneInfo.Local)
      ShowOffset(#3/11/2007 2:30:00AM#, TimeZoneInfo.Local)
      ShowOffset(Date.UtcNow, TimeZoneInfo.Local)
      ShowOffset(#6/12/2006 11:00AM#, TimeZoneInfo.Utc)
      ShowOffset(#11/4/2007 1:00AM#, TimeZoneInfo.Utc)
      ShowOffset(#12/10/2006 3:00PM#, TimeZoneInfo.Utc)
      ShowOffset(#3/11/2007 2:30:00AM#, TimeZoneInfo.Utc)
      ShowOffset(Date.Now, TimeZoneInfo.Utc)
      ShowOffset(#6/12/2006 11:00AM#, cst)
      ShowOffset(#11/4/2007 1:00AM#, cst)
      ShowOffset(#12/10/2006 3:00PM#, cst)
      ShowOffset(#3/11/2007 2:30:00AM#, cst)
      ShowOffset(New Date(2007, 11, 14, 00, 00, 00, DateTimeKind.Local), cst)
   End Sub
   
   Private Sub ShowOffset(time As Date, timeZone As TimeZoneInfo)
      Dim convertedTime As Date = time  
      Dim offset As TimeSpan
      
      If time.Kind = DateTimeKind.Local And Not timeZone.Equals(TimeZoneInfo.Local) Then
         convertedTime = TimeZoneInfo.ConvertTime(time, TimeZoneInfo.Local, timeZone)
      ElseIf time.Kind = DateTimeKind.Utc And Not timeZone.Equals(TimeZoneInfo.Utc) Then
         convertedTime = TimeZoneInfo.ConvertTime(time, TimeZoneInfo.Utc, timeZone)         
      End If
      offset = timeZone.GetUtcOffset(time)
      If time = convertedTime Then
         Console.WriteLine("{0} {1} ", time, _
                           IIf(timeZone.IsDaylightSavingTime(time), timeZone.DaylightName, timeZone.StandardName))
         Console.WriteLine("   It differs from UTC by {0} hours, {1} minutes.", _
                            offset.Hours, _
                            offset.Minutes)
      Else
         Console.WriteLine("{0} {1} ", time, _
                           IIf(time.Kind = DateTimeKind.Utc, "UTC", TimeZoneInfo.Local.Id))       
         Console.WriteLine("   converts to {0} {1}.", _
                           convertedTime, _
                           timeZone.Id)
         Console.WriteLine("   It differs from UTC by {0} hours, {1} minutes.", _
                           offset.Hours, offset.Minutes)  
       End If
       Console.WriteLine()                                             
   End Sub
End Module
'
' The example produces the following output:
' 
'       6/12/2006 11:00:00 AM Pacific Daylight Time 
'          It differs from UTC by -7 hours, 0 minutes.
'       
'       11/4/2007 1:00:00 AM Pacific Standard Time 
'          It differs from UTC by -8 hours, 0 minutes.
'       
'       12/10/2006 3:00:00 PM Pacific Standard Time 
'          It differs from UTC by -8 hours, 0 minutes.
'       
'       3/11/2007 2:30:00 AM Pacific Standard Time 
'          It differs from UTC by -8 hours, 0 minutes.
'       
'       2/2/2007 8:35:46 PM UTC 
'          converts to 2/2/2007 12:35:46 PM Pacific Standard Time.
'          It differs from UTC by -8 hours, 0 minutes.
'       
'       6/12/2006 11:00:00 AM UTC 
'          It differs from UTC by 0 hours, 0 minutes.
'       
'       11/4/2007 1:00:00 AM UTC 
'          It differs from UTC by 0 hours, 0 minutes.
'       
'       12/10/2006 3:00:00 AM UTC 
'          It differs from UTC by 0 hours, 0 minutes.
'       
'       3/11/2007 2:30:00 AM UTC 
'          It differs from UTC by 0 hours, 0 minutes.
'       
'       2/2/2007 12:35:46 PM Pacific Standard Time 
'          converts to 2/2/2007 8:35:46 PM UTC.
'          It differs from UTC by 0 hours, 0 minutes.
'       
'       6/12/2006 11:00:00 AM Central Daylight Time 
'          It differs from UTC by -5 hours, 0 minutes.
'       
'       11/4/2007 1:00:00 AM Central Standard Time 
'          It differs from UTC by -6 hours, 0 minutes.
'       
'       12/10/2006 3:00:00 PM Central Standard Time 
'          It differs from UTC by -6 hours, 0 minutes.
'       
'       3/11/2007 2:30:00 AM Central Standard Time 
'          It differs from UTC by -6 hours, 0 minutes.
'       
'       11/14/2007 12:00:00 AM Pacific Standard Time 
'          converts to 11/14/2007 2:00:00 AM Central Standard Time.
'          It differs from UTC by -6 hours, 0 minutes.

Commenti

L'intervallo di tempo restituito include eventuali differenze a causa dell'applicazione delle regole di regolazione al fuso orario corrente. Differisce dalla BaseUtcOffset proprietà, che restituisce la differenza tra l'ora UTC (Coordinated Universal Time) e l'ora standard del fuso orario e, pertanto, non tiene conto delle regole di regolazione.

Se la dateTime proprietà del Kind parametro non corrisponde all'oggetto fuso orario, questo metodo esegue la conversione necessaria prima di restituire un risultato. Ad esempio, questo può verificarsi se la proprietà è ma l'oggetto Kind fuso orario non è DateTimeKind.Local il fuso orario locale. Se dateTime è ambiguo o se l'ora convertita è ambigua, questo metodo interpreta l'ora ambigua come ora standard. Se dateTime non è valido, questo metodo restituisce un TimeSpan oggetto che riflette la differenza tra UTC e l'ora standard del fuso orario.

Il TimeZoneInfo.GetUtcOffset(DateTime) metodo è simile all'operazione al GetUtcOffset metodo della TimeZone classe.

Vedi anche

BaseUtcOffset

Si applica a

GetUtcOffset(DateTimeOffset)

Origine:: TimeZoneInfo.cs

Origine:: TimeZoneInfo.cs

Origine:: TimeZoneInfo.cs

Calcola l'offset o differenza tra l'ora in questo fuso orario e l'ora UTC (Coordinated Universal Time) per una particolare data e ora.

public:
 TimeSpan GetUtcOffset(DateTimeOffset dateTimeOffset);

public TimeSpan GetUtcOffset (DateTimeOffset dateTimeOffset);

member this.GetUtcOffset : DateTimeOffset -> TimeSpan

Public Function GetUtcOffset (dateTimeOffset As DateTimeOffset) As TimeSpan

Parametri

dateTimeOffset: DateTimeOffset

Data e ora per la quale determinare l'offset.

Restituisce

TimeSpan

Oggetto che indica la differenza di ora tra l'ora UTC (Coordinated Universal Time) e il fuso orario corrente.

Commenti

Si applica a

Condividi tramite

TimeZoneInfo.GetUtcOffset Metodo

Definizione

Overload

GetUtcOffset(DateTime)

Parametri

Restituisce

Esempio

Commenti

Vedi anche

Si applica a

GetUtcOffset(DateTimeOffset)

Parametri

Restituisce

Commenti

Si applica a

Risorse aggiuntive