TimeZoneInfo.GetAmbiguousTimeOffsets Méthode

Référence

Définition

Espace de noms:: System

Assembly:: System.Runtime.dll

Assembly:: System.Core.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Important

Certaines informations portent sur la préversion du produit qui est susceptible d’être en grande partie modifiée avant sa publication. Microsoft exclut toute garantie, expresse ou implicite, concernant les informations fournies ici.

Retourne des informations sur les dates et heures possibles auxquelles une date et heure ambiguës peuvent être mappées.

Surcharges

GetAmbiguousTimeOffsets(DateTime)	Retourne des informations sur les dates et heures possibles auxquelles une date et heure ambiguës peuvent être mappées.
GetAmbiguousTimeOffsets(DateTimeOffset)	Retourne des informations sur les dates et heures possibles auxquelles une date et heure ambiguës peuvent être mappées.

GetAmbiguousTimeOffsets(DateTime)

Source:: TimeZoneInfo.cs

Source:: TimeZoneInfo.cs

Source:: TimeZoneInfo.cs

Retourne des informations sur les dates et heures possibles auxquelles une date et heure ambiguës peuvent être mappées.

public:
 cli::array <TimeSpan> ^ GetAmbiguousTimeOffsets(DateTime dateTime);

public TimeSpan[] GetAmbiguousTimeOffsets (DateTime dateTime);

member this.GetAmbiguousTimeOffsets : DateTime -> TimeSpan[]

Public Function GetAmbiguousTimeOffsets (dateTime As DateTime) As TimeSpan()

Paramètres

dateTime: DateTime

Date et heure.

Retours

TimeSpan[]

Tableau d'objets qui représente des offsets de temps universel coordonné possibles auxquels une date et heure particulières peuvent être mappées.

Exceptions

ArgumentException

dateTime n’est pas une heure ambiguë.

Exemples

L’exemple suivant définit une méthode nommée ShowPossibleUtcTimes qui utilise la GetAmbiguousTimeOffsets(DateTime) méthode pour mapper une heure ambiguë à ses heures UTC (Coordinated Universal Time) correspondantes.

private void ShowPossibleUtcTimes(DateTime ambiguousTime, TimeZoneInfo timeZone)
{
   // Determine if time is ambiguous in target time zone
   if (!timeZone.IsAmbiguousTime(ambiguousTime))
   {
      Console.WriteLine("{0} is not ambiguous in time zone {1}.", 
                        ambiguousTime, 
                        timeZone.DisplayName);
   }
   else
   {
      // Display time and its time zone (local, UTC, or indicated by timeZone argument)
      string originalTimeZoneName; 
      if (ambiguousTime.Kind == DateTimeKind.Utc)
         originalTimeZoneName = "UTC";
      else if (ambiguousTime.Kind == DateTimeKind.Local)
         originalTimeZoneName = "local time";
      else
         originalTimeZoneName = timeZone.DisplayName;

      Console.WriteLine("{0} {1} maps to the following possible times:", 
                        ambiguousTime, originalTimeZoneName);
      // Get ambiguous offsets 
      TimeSpan[] offsets = timeZone.GetAmbiguousTimeOffsets(ambiguousTime);
      // Handle times not in time zone of timeZone argument
      // Local time where timeZone is not local zone
      if ((ambiguousTime.Kind == DateTimeKind.Local) && ! timeZone.Equals(TimeZoneInfo.Local)) 
         ambiguousTime = TimeZoneInfo.ConvertTime(ambiguousTime, TimeZoneInfo.Local, timeZone);
      // UTC time where timeZone is not UTC zone   
      else if ((ambiguousTime.Kind == DateTimeKind.Utc) && ! timeZone.Equals(TimeZoneInfo.Utc))
         ambiguousTime = TimeZoneInfo.ConvertTime(ambiguousTime, TimeZoneInfo.Utc, timeZone);

      // Display each offset and its mapping to UTC
      foreach (TimeSpan offset in offsets)
      {
         if (offset.Equals(timeZone.BaseUtcOffset))
            Console.WriteLine("If {0} is {1}, {2} UTC", ambiguousTime, timeZone.StandardName, ambiguousTime - offset);
         else
            Console.WriteLine("If {0} is {1}, {2} UTC", ambiguousTime, timeZone.DaylightName, ambiguousTime - offset);
      }
   }            
}

let showPossibleUtcTimes (ambiguousTime: DateTime) (timeZone: TimeZoneInfo) =
    // Determine if time is ambiguous in target time zone
    if not (timeZone.IsAmbiguousTime ambiguousTime) then
        printfn $"{ambiguousTime} is not ambiguous in time zone {timeZone.DisplayName}."
    else
        // Display time and its time zone (local, UTC, or indicated by timeZone argument)
        let originalTimeZoneName =
            match ambiguousTime.Kind with
            | DateTimeKind.Utc -> "UTC"
            | DateTimeKind.Local -> "local time"
            | _ -> timeZone.DisplayName

        printfn $"{ambiguousTime} {originalTimeZoneName} maps to the following possible times:"
        // Get ambiguous offsets 
        let offsets = timeZone.GetAmbiguousTimeOffsets ambiguousTime
        // Handle times not in time zone of timeZone argument
        // Local time where timeZone is not local zone
        let ambiguousTime =
            if (ambiguousTime.Kind = DateTimeKind.Local) && not (timeZone.Equals TimeZoneInfo.Local) then 
                TimeZoneInfo.ConvertTime(ambiguousTime, TimeZoneInfo.Local, timeZone)
            // UTC time where timeZone is not UTC zone   
            elif (ambiguousTime.Kind = DateTimeKind.Utc) && not (timeZone.Equals TimeZoneInfo.Utc) then
                TimeZoneInfo.ConvertTime(ambiguousTime, TimeZoneInfo.Utc, timeZone)
            else 
                ambiguousTime
        // Display each offset and its mapping to UTC
        for offset in offsets do
            if offset.Equals timeZone.BaseUtcOffset then
                printfn $"If {ambiguousTime} is {timeZone.StandardName}, {ambiguousTime - offset} UTC"
            else
                printfn $"If {ambiguousTime} is {timeZone.DaylightName}, {ambiguousTime - offset} UTC"

Private Sub ShowPossibleUtcTimes(ambiguousTime As Date, timeZone As TimeZoneInfo)
   ' Determine if time is ambiguous in target time zone
   If Not timeZone.IsAmbiguousTime(ambiguousTime) Then
      Console.WriteLine("{0} is not ambiguous in time zone {1}.", _
                        ambiguousTime, _
                        timeZone.DisplayName)
   Else
      ' Display time and its time zone (local, UTC, or indicated by timeZone argument)
      Dim originalTimeZoneName As String 
      If ambiguousTime.Kind = DateTimeKind.Utc Then
         originalTimeZoneName = "UTC"
      ElseIf ambiguousTime.Kind = DateTimeKind.Local Then
         originalTimeZoneName = "local time"
      Else
         originalTimeZoneName = timeZone.DisplayName
      End If      
      Console.WriteLine("{0} {1} maps to the following possible times:", _
                        ambiguousTime, originalTimeZoneName)
      ' Get ambiguous offsets 
      Dim offsets() As TimeSpan = timeZone.GetAmbiguousTimeOffsets(ambiguousTime)
      ' Handle times not in time zone of timeZone argument
      ' Local time where timeZone is not local zone
      If (ambiguousTime.Kind = DateTimeKind.Local) And Not timeZone.Equals(TimeZoneInfo.Local) Then
         ambiguousTime = TimeZoneInfo.ConvertTime(ambiguousTime, TimeZoneInfo.Local, timeZone)
      ' UTC time where timeZone is not UTC zone   
      ElseIf (ambiguousTime.Kind = DateTimeKind.Utc) And Not timeZone.Equals(TimeZoneInfo.Utc) Then
         ambiguousTime = TimeZoneInfo.ConvertTime(ambiguousTime, TimeZoneInfo.Utc, timeZone)
      End If       
      ' Display each offset and its mapping to UTC
      For Each offset As TimeSpan In offsets
         If offset.Equals(timeZone.BaseUtcOffset) Then
            Console.WriteLine("If {0} is {1}, {2} UTC", ambiguousTime, timeZone.StandardName, ambiguousTime - offset)
         Else
            Console.WriteLine("If {0} is {1}, {2} UTC", ambiguousTime, timeZone.DaylightName, ambiguousTime - offset)
         End If   
      Next
   End If            
End Sub

La méthode peut ensuite être appelée à l’aide de code tel que le suivant :

Console.WriteLine();
ShowPossibleUtcTimes(new DateTime(2007, 11, 4, 1, 0, 0), 
                     TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"));
Console.WriteLine();
ShowPossibleUtcTimes(new DateTime(2007, 11, 4, 01, 00, 00, DateTimeKind.Local), 
                     TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"));
Console.WriteLine();
ShowPossibleUtcTimes(new DateTime(2007, 11, 4, 00, 00, 00, DateTimeKind.Local), 
                     TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"));
Console.WriteLine();                     
ShowPossibleUtcTimes(new DateTime(2007, 11, 4, 01, 00, 00, DateTimeKind.Unspecified), 
                     TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"));
Console.WriteLine();
ShowPossibleUtcTimes(new DateTime(2007, 11, 4, 07, 00, 00, DateTimeKind.Utc), 
                     TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"));
// 
// This example produces the following output if run in the Pacific time zone:
//
//    11/4/2007 1:00:00 AM (GMT-06:00) Central Time (US & Canada) maps to the following possible times:
//    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
//    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
//       
//    11/4/2007 1:00:00 AM Pacific Standard Time is not ambiguous in time zone (GMT-06:00) Central Time (US & Canada).
//     
//    11/4/2007 12:00:00 AM local time maps to the following possible times:
//    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
//    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
//    
//    11/4/2007 1:00:00 AM (GMT-06:00) Central Time (US & Canada) maps to the following possible times:
//    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
//    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
//       
//    11/4/2007 7:00:00 AM UTC maps to the following possible times:
//    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
//    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
//

printfn ""
showPossibleUtcTimes(DateTime(2007, 11, 4, 1, 0, 0)) (TimeZoneInfo.FindSystemTimeZoneById "Central Standard Time")
printfn ""
showPossibleUtcTimes (DateTime(2007, 11, 4, 01, 00, 00, DateTimeKind.Local)) (TimeZoneInfo.FindSystemTimeZoneById "Central Standard Time")
printfn ""
showPossibleUtcTimes (DateTime(2007, 11, 4, 00, 00, 00, DateTimeKind.Local)) (TimeZoneInfo.FindSystemTimeZoneById "Central Standard Time")
printfn ""                     
showPossibleUtcTimes (DateTime(2007, 11, 4, 01, 00, 00, DateTimeKind.Unspecified)) (TimeZoneInfo.FindSystemTimeZoneById "Central Standard Time")
printfn ""
showPossibleUtcTimes (DateTime(2007, 11, 4, 07, 00, 00, DateTimeKind.Utc)) (TimeZoneInfo.FindSystemTimeZoneById "Central Standard Time")

// This example produces the following output if run in the Pacific time zone:
//
//    11/4/2007 1:00:00 AM (GMT-06:00) Central Time (US & Canada) maps to the following possible times:
//    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
//    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
//       
//    11/4/2007 1:00:00 AM Pacific Standard Time is not ambiguous in time zone (GMT-06:00) Central Time (US & Canada).
//     
//    11/4/2007 12:00:00 AM local time maps to the following possible times:
//    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
//    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
//    
//    11/4/2007 1:00:00 AM (GMT-06:00) Central Time (US & Canada) maps to the following possible times:
//    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
//    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
//       
//    11/4/2007 7:00:00 AM UTC maps to the following possible times:
//    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
//    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
//

ShowPossibleUtcTimes(#11/4/2007 1:00:00#, TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"))
Console.WriteLine()
ShowPossibleUtcTimes(New Date(2007, 11, 4, 01, 00, 00, DateTimeKind.Local), _
                     TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"))
Console.WriteLine()
ShowPossibleUtcTimes(New Date(2007, 11, 4, 00, 00, 00, DateTimeKind.Local), _
                     TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"))
Console.WriteLine()                     
ShowPossibleUtcTimes(New Date(2007, 11, 4, 01, 00, 00, DateTimeKind.Unspecified), _
                     TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"))
Console.WriteLine()
ShowPossibleUtcTimes(New Date(2007, 11, 4, 07, 00, 00, DateTimeKind.Utc), _
                     TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"))
' 
' This example produces the following output if run in the Pacific time zone:
'
'    11/4/2007 1:00:00 AM (GMT-06:00) Central Time (US & Canada) maps to the following possible times:
'    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
'    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
' 
'    11/4/2007 1:00:00 AM Pacific Standard Time is not ambiguous in time zone (GMT-06:00) Central Time (US & Canada).
' 
'    11/4/2007 12:00:00 AM local time maps to the following possible times:
'    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
'    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
' 
'    11/4/2007 1:00:00 AM (GMT-06:00) Central Time (US & Canada) maps to the following possible times:
'    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
'    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC
' 
'    11/4/2007 7:00:00 AM UTC maps to the following possible times:
'    If 11/4/2007 1:00:00 AM is Central Standard Time, 11/4/2007 7:00:00 AM UTC
'    If 11/4/2007 1:00:00 AM is Central Daylight Time, 11/4/2007 6:00:00 AM UTC

Remarques

Le comportement précis de cette méthode dépend de la relation entre la Kind propriété et l’objet TimeZoneInfo , comme le montre le tableau suivant.

Type d’objet TimeZoneInfo	Valeur de la propriété kind	Comportement
TimeZoneInfo.Local	DateTimeKind.Local ou DateTimeKind.Unspecified	Retourne des décalages de temps ambigus pour `dateTime`.
TimeZoneInfo.Local	DateTimeKind.Utc	`dateTime` Convertit en heure locale, puis retourne des décalages d’heure ambigus pour cette heure.
TimeZoneInfo.Utc	Toute valeur.	Lève un ArgumentException.
Tout autre fuseau horaire.	Local ou DateTimeKind.Utc	`dateTime` Convertit en fuseau horaire spécifié, puis détermine si cette heure est ambiguë.
Tout autre fuseau horaire.	DateTimeKind.Unspecified	Détermine si `dateTime` est ambigu dans le fuseau horaire spécifié.

L’ordre des TimeSpan objets dans le tableau retourné par cette méthode n’est pas défini. Toutefois, vous pouvez déterminer quel élément représente un décalage par rapport à l’heure standard du fuseau horaire en comparant sa valeur à la propriété du BaseUtcOffset fuseau horaire. Pour mapper une heure ambiguë à l’heure standard d’un fuseau horaire, consultez Guide pratique pour résoudre les heures ambiguës.

Voir aussi

S’applique à

GetAmbiguousTimeOffsets(DateTimeOffset)

Source:: TimeZoneInfo.cs

Source:: TimeZoneInfo.cs

Source:: TimeZoneInfo.cs

Retourne des informations sur les dates et heures possibles auxquelles une date et heure ambiguës peuvent être mappées.

public:
 cli::array <TimeSpan> ^ GetAmbiguousTimeOffsets(DateTimeOffset dateTimeOffset);

public TimeSpan[] GetAmbiguousTimeOffsets (DateTimeOffset dateTimeOffset);

member this.GetAmbiguousTimeOffsets : DateTimeOffset -> TimeSpan[]

Public Function GetAmbiguousTimeOffsets (dateTimeOffset As DateTimeOffset) As TimeSpan()

Paramètres

dateTimeOffset: DateTimeOffset

Date et heure.

Retours

TimeSpan[]

Tableau d'objets qui représente des offsets de temps universel coordonné possibles auxquels une date et heure particulières peuvent être mappées.

Exceptions

ArgumentException

dateTimeOffset n’est pas une heure ambiguë.

Remarques

Le comportement précis de cette méthode dépend de la relation entre la Offset propriété du dateTimeOffset paramètre et l’objet TimeZoneInfo . Si la valeur de la Offset propriété correspond aux décalages possibles du fuseau horaire actuel par rapport au temps universel coordonné (UTC) pour cette date et cette heure, la méthode retourne les décalages possibles. Sinon, il convertit dateTimeOffset en heure dans le fuseau horaire actuel, puis retourne les décalages possibles de cette date et heure.

Voir aussi

S’applique à

Partager via

TimeZoneInfo.GetAmbiguousTimeOffsets Méthode

Définition

Surcharges

GetAmbiguousTimeOffsets(DateTime)

Paramètres

Retours

Exceptions

Exemples

Remarques

Voir aussi

S’applique à

GetAmbiguousTimeOffsets(DateTimeOffset)

Paramètres

Retours

Exceptions

Remarques

Voir aussi

S’applique à

Ressources supplémentaires