TimeZoneInfo.TransitionTime.CreateFixedDateRule 方法
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
定義使用固定日期規則的時間變更 (也就是在特定月份的特定日期發生的時間變更)。
public:
static TimeZoneInfo::TransitionTime CreateFixedDateRule(DateTime timeOfDay, int month, int day);
public static TimeZoneInfo.TransitionTime CreateFixedDateRule (DateTime timeOfDay, int month, int day);
static member CreateFixedDateRule : DateTime * int * int -> TimeZoneInfo.TransitionTime
Public Shared Function CreateFixedDateRule (timeOfDay As DateTime, month As Integer, day As Integer) As TimeZoneInfo.TransitionTime
參數
傳回
時間變更的相關資料。
例外狀況
範例
下列範例會使用固定日期規則和浮點數規則,為虛時區建立時區轉換。 固定日期規則會定義從上午 2:00 開始的時區調整。 于 3 月 15 日結束于上午 3:00 1900 年到 1955 年 11 月 15 日。
// Declare necessary TimeZoneInfo.AdjustmentRule objects for time zone
TimeZoneInfo imaginaryTZ;
TimeSpan delta = new TimeSpan(1, 0, 0);
TimeZoneInfo.AdjustmentRule adjustment;
List<TimeZoneInfo.AdjustmentRule> adjustmentList = new List<TimeZoneInfo.AdjustmentRule>();
// Declare transition time variables to hold transition time information
TimeZoneInfo.TransitionTime transitionRuleStart, transitionRuleEnd;
// Define a fictitious new time zone consisting of fixed and floating adjustment rules
// Define fixed rule (for 1900-1955)
transitionRuleStart = TimeZoneInfo.TransitionTime.CreateFixedDateRule(new DateTime(1, 1, 1, 2, 0, 0), 3, 15);
transitionRuleEnd = TimeZoneInfo.TransitionTime.CreateFixedDateRule(new DateTime(1, 1, 1, 3, 0, 0), 11, 15);
adjustment = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule(new DateTime(1900, 1, 1), new DateTime(1955, 12, 31),
delta, transitionRuleStart, transitionRuleEnd);
adjustmentList.Add(adjustment);
// Define floating rule (for 1956- )
transitionRuleStart = TimeZoneInfo.TransitionTime.CreateFloatingDateRule(new DateTime(1, 1, 1, 2, 0, 0), 3, 5, DayOfWeek.Sunday);
transitionRuleEnd = TimeZoneInfo.TransitionTime.CreateFloatingDateRule(new DateTime(1, 1, 1, 3, 0, 0), 10, 4, DayOfWeek.Sunday);
adjustment = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule(new DateTime(1956, 1, 1), DateTime.MaxValue.Date, delta, transitionRuleStart, transitionRuleEnd);
adjustmentList.Add(adjustment);
// Create fictitious time zone
imaginaryTZ = TimeZoneInfo.CreateCustomTimeZone("Fictitious Standard Time", new TimeSpan(-9, 0, 0),
"(GMT-09:00) Fictitious Time", "Fictitious Standard Time",
"Fictitious Daylight Time", adjustmentList.ToArray());
let delta = TimeSpan(1, 0, 0)
let adjustmentList = ResizeArray()
// Define a fictitious new time zone consisting of fixed and floating adjustment rules
// Define fixed rule (for 1900-1955)
let transitionRuleStart = TimeZoneInfo.TransitionTime.CreateFixedDateRule(DateTime(1, 1, 1, 2, 0, 0), 3, 15)
let transitionRuleEnd = TimeZoneInfo.TransitionTime.CreateFixedDateRule(DateTime(1, 1, 1, 3, 0, 0), 11, 15)
let adjustment =
TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule(DateTime(1900, 1, 1), DateTime(1955, 12, 31), delta, transitionRuleStart, transitionRuleEnd)
adjustmentList.Add adjustment
// Define floating rule (for 1956- )
let transitionRuleStart = TimeZoneInfo.TransitionTime.CreateFloatingDateRule(DateTime(1, 1, 1, 2, 0, 0), 3, 5, DayOfWeek.Sunday)
let transitionRuleEnd = TimeZoneInfo.TransitionTime.CreateFloatingDateRule(DateTime(1, 1, 1, 3, 0, 0), 10, 4, DayOfWeek.Sunday)
let adjustment = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule(DateTime(1956, 1, 1), DateTime.MaxValue.Date, delta, transitionRuleStart, transitionRuleEnd)
adjustmentList.Add adjustment
// Create fictitious time zone
let imaginaryTZ =
TimeZoneInfo.CreateCustomTimeZone("Fictitious Standard Time", TimeSpan(-9, 0, 0),
"(GMT-09:00) Fictitious Time", "Fictitious Standard Time",
"Fictitious Daylight Time", adjustmentList.ToArray())
' Declare necessary TimeZoneInfo.AdjustmentRule objects for time zone
Dim imaginaryTZ As TimeZoneInfo
Dim delta As New TimeSpan(1, 0, 0)
Dim adjustment As TimeZoneInfo.AdjustmentRule
Dim adjustmentList As New List(Of TimeZoneInfo.AdjustmentRule)
' Declare transition time variables to hold transition time information
Dim transitionRuleStart, transitionRuleEnd As TimeZoneInfo.TransitionTime
' Define a fictitious new time zone consisting of fixed and floating adjustment rules
' Define fixed rule (for 1900-1955)
transitionRuleStart = TimeZoneInfo.TransitionTime.CreateFixedDateRule(#2:00:00AM#, 3, 15)
transitionRuleEnd = TimeZoneInfo.TransitionTime.CreateFixedDateRule(#3:00:00AM#, 11, 15)
adjustment = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule(#1/1/1900#, #12/31/1955#, delta, _
transitionRuleStart, transitionRuleEnd)
adjustmentList.Add(adjustment)
' Define floating rule (for 1956- )
transitionRuleStart = TimeZoneInfo.TransitionTime.CreateFloatingDateRule(#02:00:00AM#, 3, 5, DayOfWeek.Sunday)
transitionRuleEnd = TimeZoneInfo.TransitionTime.CreateFloatingDateRule(#03:00:00AM#, 10, 4, DayOfWeek.Sunday)
adjustment = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule(#01/01/1956#, Date.MaxValue.Date, delta, transitionRuleStart, transitionRuleEnd)
adjustmentList.Add(adjustment)
' Create fictitious time zone
imaginaryTZ = TimeZoneInfo.CreateCustomTimeZone("Fictitious Standard Time", New TimeSpan(-9, 0, 0), _
"(GMT-09:00) Fictitious Time", "Fictitious Standard Time", _
"Fictitious Daylight Time", adjustmentList.ToArray())
備註
此方法會建立固定日期規則 (,也就是在特定月份的特定日期) 發生的時間變更。 例如,一律發生在 10 月 28 日的時間變更遵循固定日期規則。
針對從標準時間轉換為日光節約時間,自 timeOfDay
變數代表時區標準時間中的轉換時間。 對於從日光節約時間轉換為標準時間的轉換,它代表時區日光節約時間中的轉換時間。 請注意,這是年份 DateTime 、月和日期值必須全部等於 1 的值。