TimeZoneInfo.TransitionTime.TimeOfDay 属性

定义

命名空间:

System

程序集:

netstandard.dll, System.Runtime.dll

Source:

TimeZoneInfo.TransitionTime.cs

获取发生时间更改的小时、分钟和秒。

public DateTime TimeOfDay { get; }

属性值

DateTime

发生时间更改的当天的时间。

示例

以下示例枚举在本地计算机上找到的时区，并显示具有调整规则的时区的转换时间信息。 时间信息包括发生时间更改的时间。

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));
         }
      }   
   }   
}

注解

对于从标准时间到夏时制的转换， TimeOfDay 值表示时区标准时间中的转换时间。 对于从夏令时到标准时间的转换，它表示时区夏令时转换的时间。

属性 TimeOfDay 仅定义时间更改的时间，而不定义其日期。 日期由固定规则更改的 Month 和 Day 属性确定，浮动规则更改的 Month、 Week和 DayOfWeek 属性确定。 忽略此值 DateTime 的日期部分;年、月和日的值始终为 1。

属性 TimeOfDay 用于固定日期和浮动日期转换。

适用于