TimeZoneInfo.TransitionTime.CreateFixedDateRule(DateTime, Int32, Int32) 方法

定义

定义一个使用固定日期规则的日期更改(即,发生在特定月份的特定日期的时间更改)。Defines a time change that uses a fixed-date rule (that is, a time change that occurs on a specific day of a specific month).

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

参数

timeOfDay
DateTime

发生时间更改的时间。The time at which the time change occurs. 此参数对应于 TimeOfDay 属性。This parameter corresponds to the TimeOfDay property.

month
Int32

发生时间更改的月份。The month in which the time change occurs. 此参数对应于 Month 属性。This parameter corresponds to the Month property.

day
Int32

发生时间更改的月份的日期。The day of the month on which the time change occurs. 此参数对应于 Day 属性。This parameter corresponds to the Day property.

返回

TimeZoneInfo.TransitionTime

有关时间更改的数据。Data about the time change.

例外

timeOfDay 参数具有非默认的日期组件。The timeOfDay parameter has a non-default date component.

- 或 --or- timeOfDay 参数的 Kind 属性不是 UnspecifiedThe timeOfDay parameter's Kind property is not Unspecified.

- 或 --or- timeOfDay 参数不表示整毫秒数。The timeOfDay parameter does not represent a whole number of milliseconds.

month 参数小于 1 或大于 12。The month parameter is less than 1 or greater than 12.

- 或 --or- day 参数小于 1 或大于 31。The day parameter is less than 1 or greater than 31.

示例

下面的示例使用固定日期规则和浮动日期规则为虚时区创建时区转换。The following example creates time zone transitions for an imaginary time zone by using both a fixed-date rule and a floating-date rule. 固定日期规则定义从凌晨2:00 开始的时区调整。The fixed-date rule defines a time zone adjustment that starts at 2:00 A.M. 3月15日结束,3:00 A.M. 结束。on March 15 and ends at 3:00 A.M. 1955 1900 年11月15日。on November 15 for the years 1900 to 1955.

// 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());
' 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())

注解

此方法创建一个固定日期规则 (即,在特定月份的特定日期发生的时间更改) 。This method creates a fixed-date rule (that is, a time change that occurs on a specific day of a specific month). 例如,在10月28日发生的时间更改始终遵循固定日期规则。For example, a time change that always occurs on October 28 follows a fixed-date rule.

对于从标准时间到夏令时的转换,该 timeOfDay 参数表示时区的标准时间中的转换时间。For transitions from standard time to daylight saving time, the timeOfDay argument represents the time of the transition in the time zone's standard time. 对于从夏时制转换到标准时间的转换,它表示时区夏令时的转换时间。For transitions from daylight saving time to standard time, it represents the time of the transition in the time zone's daylight saving time. 请注意,这是 DateTime 年份、月份和日期值都必须等于1的值。Note that this is a DateTime value whose year, month, and date values must all equal 1.

适用于