TimeZoneInfo.TransitionTime.TimeOfDay Egenskap

public:
 property DateTime TimeOfDay { DateTime get(); };

public DateTime TimeOfDay { get; }

member this.TimeOfDay : DateTime

Public ReadOnly Property TimeOfDay As DateTime

Egenskapsvärde

Den tid på dagen då tidsändringen sker.

Exempel

I följande exempel räknas tidszonerna upp på den lokala datorn och övergångstidsinformation visas för de tidszoner som har justeringsregler. Tidsinformationen innehåller den tid på dagen då tidsändringen sker.

private enum WeekOfMonth
{
   First = 1,
   Second = 2,
   Third = 3,
   Fourth = 4,
   Last = 5,
}

public void GetAllTransitionTimes()
{
   ReadOnlyCollection<TimeZoneInfo> timeZones = TimeZoneInfo.GetSystemTimeZones();
   DateTimeFormatInfo dateInfo = CultureInfo.CurrentCulture.DateTimeFormat;
   
   foreach (TimeZoneInfo zone in timeZones)
   {
      Console.WriteLine("{0} transition time information:", zone.StandardName);
      TimeZoneInfo.AdjustmentRule[] adjustmentRules= zone.GetAdjustmentRules();
      
      // Indicate that time zone has no adjustment rules
      if (adjustmentRules.Length == 0)
      { 
         Console.WriteLine("   No adjustment rules defined.");
      }   
      else
      {
         // Iterate adjustment rules       
         foreach (TimeZoneInfo.AdjustmentRule adjustmentRule in adjustmentRules)
         {
            Console.WriteLine("   Adjustment rule from {0:d} to {1:d}:", 
                              adjustmentRule.DateStart, 
                              adjustmentRule.DateEnd);                                 
            
            // Get start of transition
            TimeZoneInfo.TransitionTime daylightStart = adjustmentRule.DaylightTransitionStart;
            // Display information on fixed date rule
            if (!daylightStart.IsFixedDateRule)
               Console.WriteLine("      Begins at {0:t} on the {1} {2} of {3}.", 
                              daylightStart.TimeOfDay, 
                              ((WeekOfMonth)daylightStart.Week).ToString(),  
                              daylightStart.DayOfWeek.ToString(), 
                              dateInfo.GetMonthName(daylightStart.Month));
            // Display information on floating date rule 
            else
               Console.WriteLine("      Begins at {0:t} on the {1} {2} of {3}.", 
                                 daylightStart.TimeOfDay, 
                                 ((WeekOfMonth)daylightStart.Week).ToString(),  
                                 daylightStart.DayOfWeek.ToString(), 
                                 dateInfo.GetMonthName(daylightStart.Month));
            
            // Get end of transition
            TimeZoneInfo.TransitionTime daylightEnd = adjustmentRule.DaylightTransitionEnd;
            // Display information on fixed date rule
            if (!daylightEnd.IsFixedDateRule)
               Console.WriteLine("      Ends at {0:t} on the {1} {2} of {3}.", 
                              daylightEnd.TimeOfDay, 
                              ((WeekOfMonth)daylightEnd.Week).ToString(),  
                              daylightEnd.DayOfWeek.ToString(), 
                              dateInfo.GetMonthName(daylightEnd.Month));
            // Display information on floating date rule
            else
               Console.WriteLine("      Ends at {0:t} on the {1} {2} of {3}.", 
                                 daylightStart.TimeOfDay, 
                                 ((WeekOfMonth)daylightStart.Week).ToString(),  
                                 daylightStart.DayOfWeek.ToString(), 
                                 dateInfo.GetMonthName(daylightStart.Month));
         }
      }   
   }   
}

type WeekOfMonth =
    | First = 1
    | Second = 2
    | Third = 3
    | Fourth = 4
    | Last = 5

let getAllTransitionTimes () =
    let timeZones = TimeZoneInfo.GetSystemTimeZones()
    let dateInfo = CultureInfo.CurrentCulture.DateTimeFormat
    
    for zone in timeZones do
        printfn $"{zone.StandardName} transition time information:"
        let adjustmentRules= zone.GetAdjustmentRules()
        
        // Indicate that time zone has no adjustment rules
        if adjustmentRules.Length = 0 then
            printfn "   No adjustment rules defined."
        else
            // Iterate adjustment rules       
            for adjustmentRule in adjustmentRules do
                printfn $"   Adjustment rule from {adjustmentRule.DateStart:d} to {adjustmentRule.DateEnd:d}:"                                 
                
                // Get start of transition
                let daylightStart = adjustmentRule.DaylightTransitionStart
                // Display information on fixed date rule
                if not daylightStart.IsFixedDateRule then
                    printfn $"      Begins at {daylightStart.TimeOfDay:t} on the {enum<WeekOfMonth> daylightStart.Week} {daylightStart.DayOfWeek} of {dateInfo.GetMonthName daylightStart.Month}."
                // Display information on floating date rule 
                else
                    printfn $"      Begins at {daylightStart.TimeOfDay:t} on the {enum<WeekOfMonth> daylightStart.Week} {daylightStart.DayOfWeek} of {dateInfo.GetMonthName daylightStart.Month}."
                
                // Get end of transition
                let daylightEnd = adjustmentRule.DaylightTransitionEnd
                // Display information on fixed date rule
                if not daylightEnd.IsFixedDateRule then
                    printfn $"      Ends at {daylightEnd.TimeOfDay:t} on the {enum<WeekOfMonth> daylightEnd.Week} {daylightEnd.DayOfWeek} of {dateInfo.GetMonthName daylightEnd.Month}."
                // Display information on floating date rule
                else
                    printfn $"      Ends at {daylightStart.TimeOfDay:t} on the {enum<WeekOfMonth> daylightStart.Week} {daylightStart.DayOfWeek} of {dateInfo.GetMonthName daylightStart.Month}."

Private Enum WeekOfMonth As Integer
   First = 1
   Second = 2
   Third = 3
   Fourth = 4
   Last = 5 
End Enum

Sub GetAllTransitionTimes()
   Dim timeZones As ReadOnlyCollection(Of TimeZoneInfo) = TimeZoneInfo.GetSystemTimeZones()
   For Each zone As TimeZoneInfo In timeZones
      Console.WriteLine("{0} transition time information:", zone.StandardName)
      Dim adjustmentRules() As TimeZoneInfo.AdjustmentRule = zone.GetAdjustmentRules()
      
      ' Indicate that time zone has no adjustment rules
      If adjustmentRules.Length = 0 Then 
         Console.WriteLine("   No adjustment rules defined.")
      Else
         ' Iterate adjustment rules       
         For Each adjustmentRule As TimeZoneInfo.AdjustmentRule in adjustmentRules
            Console.WriteLine("   Adjustment rule from {0:d} to {1:d}:", _
                              adjustmentRule.DateStart, _
                              adjustmentRule.DateEnd)                                 
            
            ' Get start of transition
            Dim daylightStart As TimeZoneInfo.TransitionTime = adjustmentRule.DaylightTransitionStart
            ' Display information on fixed date rule
            If Not daylightStart.IsFixedDateRule Then
               Console.WriteLine("      Begins at {0:t} on the {1} {2} of {3}.", _
                              daylightStart.TimeOfDay, _
                              CType(daylightStart.Week, WeekOfMonth).ToString(), _ 
                              daylightStart.DayOfWeek.ToString(), _
                              MonthName(daylightStart.Month))
            ' Display information on floating date rule 
            Else
               Console.WriteLine("      Begins at {0:t} on the {1} {2} of {3}.", _
                                 daylightStart.TimeOfDay, _
                                 CType(daylightStart.Week, WeekOfMonth).ToString(), _ 
                                 daylightStart.DayOfWeek.ToString(), _
                                 MonthName(daylightStart.Month))
            End If
            
            ' Get end of transition
            Dim daylightEnd As TimeZoneInfo.TransitionTime = adjustmentRule.DaylightTransitionEnd
            ' Display information on fixed date rule
            If Not daylightEnd.IsFixedDateRule Then
               Console.WriteLine("      Ends at {0:t} on the {1} {2} of {3}.", _
                              daylightEnd.TimeOfDay, _
                              CType(daylightEnd.Week, WeekOfMonth).ToString(), _ 
                              daylightEnd.DayOfWeek.ToString(), _
                              MonthName(daylightEnd.Month))
            ' Display information on floating date rule
            Else
               Console.WriteLine("      Ends at {0:t} on the {1} {2} of {3}.", _
                                 daylightStart.TimeOfDay, _
                                 CType(daylightStart.Week, WeekOfMonth).ToString(), _ 
                                 daylightStart.DayOfWeek.ToString(), _
                                 MonthName(daylightStart.Month))
            End If                     
         Next
      End If   
   Next   
End Sub

Kommentarer

För övergångar från standardtid till sommartid TimeOfDay representerar värdet tiden för övergången i tidszonens standardtid. För övergångar från sommartid till standardtid representerar den tiden för övergången i tidszonens sommartid.

Egenskapen TimeOfDay definierar bara tidpunkten för en tidsändring, men inte dess datum. Datumet bestäms av Month egenskaperna och Day för ändringar med fast regel och av Monthegenskaperna , Weekoch DayOfWeek för ändringar av flyttalsregeln. Datumkomponenten för det här DateTime värdet ignoreras. Värdet för året, månaden och dagen är alltid 1.

Egenskapen TimeOfDay används för både övergångar med fast datum och flytande datum.