public:
property DateTime LocalDateTime { DateTime get(); };
public DateTime LocalDateTime { get; }
member this.LocalDateTime : DateTime
Public ReadOnly Property LocalDateTime As DateTime
下列範例說明將數個值轉換成
DateTimeOffset
美國太平洋標準時區的當地時間。 請注意，過去三次全都模棱兩可;屬性會將所有屬性對應到太平洋標準時區中的單一日期和時間。
DateTimeOffset dto;
// Current time
dto = DateTimeOffset.Now;
Console.WriteLine(dto.LocalDateTime);
// UTC time
dto = DateTimeOffset.UtcNow;
Console.WriteLine(dto.LocalDateTime);
// Transition to DST in local time zone occurs on 3/11/2007 at 2:00 AM
dto = new DateTimeOffset(2007, 3, 11, 3, 30, 0, new TimeSpan(-7, 0, 0));
Console.WriteLine(dto.LocalDateTime);
dto = new DateTimeOffset(2007, 3, 11, 2, 30, 0, new TimeSpan(-7, 0, 0));
Console.WriteLine(dto.LocalDateTime);
// Invalid time in local time zone
dto = new DateTimeOffset(2007, 3, 11, 2, 30, 0, new TimeSpan(-8, 0, 0));
Console.WriteLine(TimeZoneInfo.Local.IsInvalidTime(dto.DateTime));
Console.WriteLine(dto.LocalDateTime);
// Transition from DST in local time zone occurs on 11/4/07 at 2:00 AM
// This is an ambiguous time
dto = new DateTimeOffset(2007, 11, 4, 1, 30, 0, new TimeSpan(-7, 0, 0));
Console.WriteLine(TimeZoneInfo.Local.IsAmbiguousTime(dto));
Console.WriteLine(dto.LocalDateTime);
dto = new DateTimeOffset(2007, 11, 4, 2, 30, 0, new TimeSpan(-7, 0, 0));
Console.WriteLine(TimeZoneInfo.Local.IsAmbiguousTime(dto));
Console.WriteLine(dto.LocalDateTime);
// This is also an ambiguous time
dto = new DateTimeOffset(2007, 11, 4, 1, 30, 0, new TimeSpan(-8, 0, 0));
Console.WriteLine(TimeZoneInfo.Local.IsAmbiguousTime(dto));
Console.WriteLine(dto.LocalDateTime);
// If run on 3/8/2007 at 4:56 PM, the code produces the following
// output:
// 3/8/2007 4:56:03 PM
// 3/8/2007 4:56:03 PM
// 3/11/2007 3:30:00 AM
// 3/11/2007 1:30:00 AM
// True
// 3/11/2007 3:30:00 AM
// True
// 11/4/2007 1:30:00 AM
// 11/4/2007 1:30:00 AM
// True
// 11/4/2007 1:30:00 AM
// Current time
let dto = DateTimeOffset.Now
printfn $"{dto.LocalDateTime}"
// UTC time
let dto = DateTimeOffset.UtcNow
printfn $"{dto.LocalDateTime}"
// Transition to DST in local time zone occurs on 3/11/2007 at 2:00 AM
let dto = DateTimeOffset(2007, 3, 11, 3, 30, 0, TimeSpan(-7, 0, 0))
printfn $"{dto.LocalDateTime}"
let dto = DateTimeOffset(2007, 3, 11, 2, 30, 0, TimeSpan(-7, 0, 0))
printfn $"{dto.LocalDateTime}"
// Invalid time in local time zone
let dto = DateTimeOffset(2007, 3, 11, 2, 30, 0, TimeSpan(-8, 0, 0))
printfn $"{TimeZoneInfo.Local.IsInvalidTime dto.DateTime}"
printfn $"{dto.LocalDateTime}"
// Transition from DST in local time zone occurs on 11/4/07 at 2:00 AM
// This is an ambiguous time
let dto = DateTimeOffset(2007, 11, 4, 1, 30, 0, TimeSpan(-7, 0, 0))
printfn $"{TimeZoneInfo.Local.IsAmbiguousTime dto}"
printfn $"{dto.LocalDateTime}"
let dto = DateTimeOffset(2007, 11, 4, 2, 30, 0, TimeSpan(-7, 0, 0))
printfn $"{TimeZoneInfo.Local.IsAmbiguousTime dto}"
printfn $"{dto.LocalDateTime}"
// This is also an ambiguous time
let dto = DateTimeOffset(2007, 11, 4, 1, 30, 0, TimeSpan(-8, 0, 0))
printfn $"{TimeZoneInfo.Local.IsAmbiguousTime dto}"
printfn $"{dto.LocalDateTime}"
// If run on 3/8/2007 at 4:56 PM, the code produces the following
// output:
// 3/8/2007 4:56:03 PM
// 3/8/2007 4:56:03 PM
// 3/11/2007 3:30:00 AM
// 3/11/2007 1:30:00 AM
// True
// 3/11/2007 3:30:00 AM
// True
// 11/4/2007 1:30:00 AM
// 11/4/2007 1:30:00 AM
// True
// 11/4/2007 1:30:00 AM
Dim dto As DateTimeOffset
' Current time
dto = DateTimeOffset.Now
Console.WriteLine(dto.LocalDateTime)
' UTC time
dto = DateTimeOffset.UtcNow
Console.WriteLine(dto.LocalDateTime)
' Transition to DST in local time zone occurs on 3/11/2007 at 2:00 AM
dto = New DateTimeOffset(#03/11/2007 3:30AM#, New Timespan(-7, 0, 0))
Console.WriteLine(dto.LocalDateTime)
dto = New DateTimeOffset(#03/11/2007 2:30AM#, New Timespan(-7, 0, 0))
Console.WriteLine(dto.LocalDateTime)
' Invalid time in local time zone
dto = New DateTimeOffset(#03/11/2007 2:30AM#, New Timespan(-8, 0, 0))
Console.WriteLine(TimeZoneInfo.Local.IsInvalidTime(dto.DateTime))
Console.WriteLine(dto.LocalDateTime)
' Transition from DST in local time zone occurs on 11/4/07 at 2:00 AM
' This is an ambiguous time
dto = New DateTimeOffset(#11/4/2007 1:30AM#, New TimeSpan(-7, 0, 0))
Console.WriteLine(TimeZoneInfo.Local.IsAmbiguousTime(dto))
Console.WriteLine(dto.LocalDateTime)
dto = New DateTimeOffset(#11/4/2007 2:30AM#, New TimeSpan(-7, 0, 0))
Console.WriteLine(TimeZoneInfo.Local.IsAmbiguousTime(dto))
Console.WriteLine(dto.LocalDateTime)
' This is also an ambiguous time
dto = New DateTimeOffset(#11/4/2007 1:30AM#, New TimeSpan(-8, 0, 0))
Console.WriteLine(TimeZoneInfo.Local.IsAmbiguousTime(dto))
Console.WriteLine(dto.LocalDateTime)
' If run on 3/8/2007 at 4:56 PM, the code produces the following
' output:
' 3/8/2007 4:56:03 PM
' 3/8/2007 4:56:03 PM
' 3/11/2007 3:30:00 AM
' 3/11/2007 1:30:00 AM
' True
' 3/11/2007 3:30:00 AM
' True
' 11/4/2007 1:30:00 AM
' 11/4/2007 1:30:00 AM
' True
' 11/4/2007 1:30:00 AM
如有必要，
LocalDateTime
屬性會將目前
DateTimeOffset
物件的日期和時間轉換為本機系統的日期和時間。 轉換是雙步驟作業：
屬性會將目前
DateTimeOffset
物件的時間轉換為國際標準時間 (UTC) 。
屬性接著會將 UTC 轉換為當地時間。
沒有不正確時間，且模棱兩可的時間會對應到當地區域的標準時間。 不過， (轉換可能會建立異常：如果
DateTimeOffset
衍生自本機電腦的值反映模棱兩可的日期和時間，該值可以轉換成 UTC，然後回到與原始時間不同的當地時間。) 屬性在執行此轉換時，會在本機時區套用任何調整規則。
這個屬性會傳回 物件的日期和時間元件
DateTimeOffset
，這讓轉換很有用
DateTimeOffset
DateTime
。 除了執行任何必要的時間轉換之外，此屬性與 屬性不同
DateTime
，方法是將
Kind
傳
DateTime
回物件的 屬性值設定為
DateTimeKind.Local
。
