使用TimeZoneInfo对象查找Ireland的时区

7 回答

• 0

  来自MSDN：

  FindSystemTimeZoneById尝试将id与HKEY_LOCAL_MACHINE \ Software \ Microsoft \ Windows NT \ CurrentVersion \ Time Zones的子项名称匹配

  在我的本地电脑（Windows 7）我没有找到ID“爱尔兰标准时间”

  MSDN TimeZoneInfo

  回复于 2024-04-25T06:27:57+08:00
• 0

  似乎没有任何这样的时区 .

  您可以使用 GetSystemTimeZones 方法获取时区 . 我用过这段代码：

  foreach (var zone in TimeZoneInfo.GetSystemTimeZones()) {
    Console.WriteLine("{0:00.00} {1}", zone.BaseUtcOffset.TotalHours, zone.Id);
  }
  

  列表中间是您可能感兴趣的时区：

  ...
  -01,00 Azores Standard Time
  -01,00 Cape Verde Standard Time
  00,00 Morocco Standard Time
  00,00 UTC
  00,00 GMT Standard Time
  00,00 Greenwich Standard Time
  01,00 W. Europe Standard Time
  01,00 Central Europe Standard Time
  01,00 Romance Standard Time
  01,00 Central European Standard Time
  01,00 W. Central Africa Standard Time
  01,00 Namibia Standard Time
  ...
  

  回复于 2024-04-25T06:27:57+08:00
• 2

  我想你得到 TimeZoneNotFoundException

  找不到由id指定的时区标识符 . 这意味着名称与id匹配的注册表项不存在，或者该键存在但不包含任何时区数据 .

  Link to msdn

  使用的注册表项是：

  HKEY_LOCAL_MACHINE \ Software \ Microsoft \ Windows NT \ CurrentVersion \ Time Zones

  回复于 2024-04-25T06:27:57+08:00
• 2

  TimeZoneInfo 支持的时区列表位于 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones 中 . 我的Windows 7副本没有爱尔兰的任何信息 .

  回复于 2024-04-25T06:27:57+08:00
• 0

  我试图在VB.NET中找到这个解决方案 . 感谢https://msdn.microsoft.com/en-us/library/bb397784(v=vs.110).aspx的代码，我找到了解决方案 . 希望这会让你到达需要一个好的VB.NET到C＃转换器来结束这个已有5年历史的问题 .

  Dim IST As TimeZoneInfo
  ' Declare necessary TimeZoneInfo.AdjustmentRule objects for time zone
  ' delta is the amount of change during DST
  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
  
  ' Simplifying some elements for later use
  Dim CurrTime As Date = DateTime.SpecifyKind(DateTime.UtcNow, DateTimeKind.Unspecified)
  Dim EST As TimeZoneInfo = TimeZoneInfo.FindSystemTimeZoneById("Eastern Standard Time")
  Dim CST As TimeZoneInfo = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time")
  Dim UTC As TimeZoneInfo = TimeZoneInfo.FindSystemTimeZoneById("UTC")
  
  ' Define new Irish Standard Time zone at UTC, but with DST
  transitionRuleStart = TimeZoneInfo.TransitionTime.CreateFloatingDateRule(#2:00:00 AM#, 3, 2, DayOfWeek.Sunday)
  transitionRuleEnd = TimeZoneInfo.TransitionTime.CreateFloatingDateRule(#2:00:00 AM#, 11, 1, DayOfWeek.Sunday)
  adjustment = TimeZoneInfo.AdjustmentRule.CreateAdjustmentRule(#1/1/2007#, Date.MaxValue.Date, delta, transitionRuleStart, transitionRuleEnd)
  adjustmentList.Add(adjustment)
  
  Dim adjustments(adjustmentList.Count - 1) As TimeZoneInfo.AdjustmentRule
  adjustmentList.CopyTo(adjustments)
  
  IST = TimeZoneInfo.CreateCustomTimeZone("IST", New TimeSpan(0, 0, 0), _
        "(GMT 00:00) Irish Standard Time (Ireland)", "Irish Standard Time", _
        "Irish Daylight Time", adjustments)
  
  ' Testing.
  Debug.Print("Time in Ireland: " & TimeZoneInfo.ConvertTime(CurrTime, UTC, IST))
  Debug.Print("Time in New York: " & TimeZoneInfo.ConvertTime(CurrTime, UTC, EST))
  Debug.Print("Time in Chicago: " & TimeZoneInfo.ConvertTime(CurrTime, UTC, CST))
  

  回复于 2024-04-25T06:27:57+08:00
• 1

  爱尔兰的时区ID为"GMT Standard Time" . 这个适合我使用 TimeZoneInfo.FindSystemTimeZoneById 一个Windows 7 .

  回复于 2024-04-25T06:27:57+08:00
• 6

  从msdn复制的示例

  运行它以查看您可以使用的时区ID：

  ReadOnlyCollection<TimeZoneInfo> zones = TimeZoneInfo.GetSystemTimeZones();
  Console.WriteLine("The local system has the following {0} time zones", zones.Count);
  foreach (TimeZoneInfo zone in zones)
     Console.WriteLine(zone.Id);
  

  回复于 2024-04-25T06:27:57+08:00