TimeZoneInfo.GetAdjustmentRules 方法 (System)

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public:
 cli::array <TimeZoneInfo::AdjustmentRule ^> ^ GetAdjustmentRules();

public TimeZoneInfo.AdjustmentRule[] GetAdjustmentRules ();

member this.GetAdjustmentRules : unit -> TimeZoneInfo.AdjustmentRule[]

Public Function GetAdjustmentRules () As TimeZoneInfo.AdjustmentRule()

// Get all time zones from system ReadOnlyCollection<TimeZoneInfo> timeZones = TimeZoneInfo.GetSystemTimeZones(); string[] monthNames = CultureInfo.CurrentCulture.DateTimeFormat.MonthNames; // Get each time zone foreach (TimeZoneInfo timeZone in timeZones) TimeZoneInfo.AdjustmentRule[] adjustments = timeZone.GetAdjustmentRules(); // Display message for time zones with no adjustments if (adjustments.Length == 0) Console.WriteLine("{0} has no adjustment rules", timeZone.StandardName); // Handle time zones with 1 or 2+ adjustments differently bool showCount = false; int ctr = 0; string spacer = ""; Console.WriteLine("{0} Adjustment rules", timeZone.StandardName); if (adjustments.Length > 1) showCount = true; spacer = " "; // Iterate adjustment rules foreach (TimeZoneInfo.AdjustmentRule adjustment in adjustments) if (showCount) Console.WriteLine(" Adjustment rule #{0}", ctr+1); ctr++; // Display general adjustment information Console.WriteLine("{0} Start Date: {1:D}", spacer, adjustment.DateStart); Console.WriteLine("{0} End Date: {1:D}", spacer, adjustment.DateEnd); Console.WriteLine("{0} Time Change: {1}:{2:00} hours", spacer, adjustment.DaylightDelta.Hours, adjustment.DaylightDelta.Minutes); // Get transition start information TimeZoneInfo.TransitionTime transitionStart = adjustment.DaylightTransitionStart; Console.Write("{0} Annual Start: ", spacer); if (transitionStart.IsFixedDateRule) Console.WriteLine("On {0} {1} at {2:t}", monthNames[transitionStart.Month - 1], transitionStart.Day, transitionStart.TimeOfDay); Console.WriteLine("The {0} {1} of {2} at {3:t}", ((WeekOfMonth)transitionStart.Week).ToString(), transitionStart.DayOfWeek.ToString(), monthNames[transitionStart.Month - 1], transitionStart.TimeOfDay); // Get transition end information TimeZoneInfo.TransitionTime transitionEnd = adjustment.DaylightTransitionEnd; Console.Write("{0} Annual End: ", spacer); if (transitionEnd.IsFixedDateRule) Console.WriteLine("On {0} {1} at {2:t}", monthNames[transitionEnd.Month - 1], transitionEnd.Day, transitionEnd.TimeOfDay); Console.WriteLine("The {0} {1} of {2} at {3:t}", ((WeekOfMonth)transitionEnd.Week).ToString(), transitionEnd.DayOfWeek.ToString(), monthNames[transitionEnd.Month - 1], transitionEnd.TimeOfDay); Console.WriteLine();


   type WeekOfMonth = 
    | First = 1
    | Second = 2
    | Third = 3
    | Fourth = 4
    | Last = 5
let showStartAndEndDates () =
    // Get all time zones from system
    let timeZones = TimeZoneInfo.GetSystemTimeZones()
    let monthNames = CultureInfo.CurrentCulture.DateTimeFormat.MonthNames
    // Get each time zone
    for timeZone in timeZones do
        let adjustments = timeZone.GetAdjustmentRules()
        // Display message for time zones with no adjustments
        if adjustments.Length = 0 then
            printfn $"{timeZone.StandardName} has no adjustment rules"
            // Handle time zones with 1 or 2+ adjustments differently
            let mutable ctr = 0
            let showCount, spacer = 
                if adjustments.Length > 1 then
                    true, "   "
                    false, ""
            printfn $"{timeZone.StandardName} Adjustment rules"
            // Iterate adjustment rules
            for adjustment in adjustments do
                if showCount then
                    printfn $"   Adjustment rule #{ctr + 1}"
                    ctr <- ctr + 1
                // Display general adjustment information
                printfn $"{spacer}   Start Date: {adjustment.DateStart:D}"
                printfn $"{spacer}   End Date: {adjustment.DateEnd:D}"
                printfn $"{spacer}   Time Change: {adjustment.DaylightDelta.Hours}:{adjustment.DaylightDelta.Minutes:D2} hours"
                // Get transition start information
                let transitionStart = adjustment.DaylightTransitionStart
                printf $"{spacer}   Annual Start: "
                if transitionStart.IsFixedDateRule then
                    printfn $"On {monthNames[transitionStart.Month - 1]} {transitionStart.Day} at {transitionStart.TimeOfDay:t}"
                    printfn $"The {transitionStart.Week |> enum<WeekOfMonth>} {transitionStart.DayOfWeek} of {monthNames[transitionStart.Month - 1]} at {transitionStart.TimeOfDay:t}"
                // Get transition end information
                let transitionEnd = adjustment.DaylightTransitionEnd
                printf $"{spacer}   Annual End: "
                if transitionEnd.IsFixedDateRule then
                    printfn $"On {monthNames[transitionEnd.Month - 1]} {transitionEnd.Day} at {transitionEnd.TimeOfDay:t}"
                    printfn $"The {enum<WeekOfMonth> transitionEnd.Week} {transitionEnd.DayOfWeek} of {monthNames[transitionEnd.Month - 1]} at {transitionEnd.TimeOfDay:t}" 
        Console.WriteLine()
   
    Private Enum WeekOfMonth As Integer
   First = 1
   Second = 2
   Third = 3
   Fourth = 4
   Last = 5
End Enum
Private Sub ShowStartAndEndDates()
   ' Get all time zones from system
   Dim timeZones As ReadOnlyCollection(Of TimeZoneInfo) = TimeZoneInfo.GetSystemTimeZones()
   ' Get each time zone
   For Each timeZone As TimeZoneInfo In timeZones
      Dim adjustments() As TimeZoneInfo.AdjustmentRule = timeZone.GetAdjustmentRules()
      ' Display message for time zones with no adjustments
      If adjustments.Length = 0 Then
         Console.WriteLine("{0} has no adjustment rules", timeZone.StandardName)
         ' Handle time zones with 1 or 2+ adjustments differently
         Dim showCount As Boolean = False
         Dim ctr As Integer = 0
         Dim spacer As String = ""
         Console.WriteLine("{0} Adjustment rules", timeZone.StandardName)
         If adjustments.Length > 1 Then showCount = True : spacer = "   "  
         ' Iterate adjustment rules
         For Each adjustment As TimeZoneInfo.AdjustmentRule in adjustments
            If showCount Then 
               Console.WriteLine("   Adjustment rule #{0}", ctr+1)
               ctr += 1
            End If
            ' Display general adjustment information
            Console.WriteLine("{0}   Start Date: {1:D}", spacer, adjustment.DateStart)
            Console.WriteLine("{0}   End Date: {1:D}", spacer, adjustment.DateEnd)
            Console.WriteLine("{0}   Time Change: {1}:{2:00} hours", spacer, _
                              adjustment.DaylightDelta.Hours, adjustment.DaylightDelta.Minutes)
            ' Get transition start information
            Dim transitionStart As TimeZoneInfo.TransitionTime = adjustment.DaylightTransitionStart
            Console.Write("{0}   Annual Start: ", spacer)
            If transitionStart.IsFixedDateRule Then
               Console.WriteLine("On {0} {1} at {2:t}", _
                                 MonthName(transitionStart.Month), _
                                 transitionStart.Day, _
                                 transitionStart.TimeOfDay)
               Console.WriteLine("The {0} {1} of {2} at {3:t}", _
                                 CType(transitionStart.Week, WeekOfMonth).ToString(), _
                                 transitionStart.DayOfWeek.ToString(), _
                                 MonthName(transitionStart.Month), _
                                 transitionStart.TimeOfDay)
            End If
            ' Get transition end information
            Dim transitionEnd As TimeZoneInfo.TransitionTime = adjustment.DaylightTransitionEnd
            Console.Write("{0}   Annual End: ", spacer)
            If transitionEnd.IsFixedDateRule Then
               Console.WriteLine("On {0} {1} at {2:t}", _
                                 MonthName(transitionEnd.Month), _
                                 transitionEnd.Day, _
                                 transitionEnd.TimeOfDay)
               Console.WriteLine("The {0} {1} of {2} at {3:t}", _
                                 CType(transitionEnd.Week, WeekOfMonth).ToString(), _
                                 transitionEnd.DayOfWeek.ToString(), _
                                 MonthName(transitionEnd.Month), _
                                 transitionEnd.TimeOfDay)
            End If
      End If   
      Console.WriteLine()
End Sub
    
     方法
     
      GetAdjustmentRules
     
     會擷取 物件的陣列
     
      System.TimeZoneInfo.AdjustmentRule
     
     。 陣列中的每個物件都會定義該時區調整的有效開始和結束日期，以及其差異 (調整會導致時間變更) 。 此外，兩個屬性會傳回
     
      System.TimeZoneInfo.TransitionTime
     
     物件，這些物件會定義每一年轉換到標準時間及從標準時間轉換的時間。
    
    
     如果時區有多個調整規則，通常會從索引 0) 的最早 (排序為索引
     
      Length
     
     的最新 (- 1) 。
    
    
     如果時區沒有調整規則，此方法
     
      GetAdjustmentRules
     
     會傳回空陣列 (陣列，其
     
      Length
     
     為零) 。
    
    
     對 方法所
     
      GetAdjustmentRules
     
     傳回之陣列元素所做的任何修改，都不會反映在屬於特定時區的調整規則中。 若要修改時區的調整規則 (，例如反映其日光節約時間的歷程轉換，) 您必須使用適當的調整規則建立新的時區，而不是修改現有的時區。