DateTimeOffset.LocalDateTime Property

Reference

Definition

Namespace:: System

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: DateTimeOffset.cs

Source:: DateTimeOffset.cs

Source:: DateTimeOffset.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets a DateTime value that represents the local date and time of the current DateTimeOffset object.

public:
 property DateTime LocalDateTime { DateTime get(); };

public DateTime LocalDateTime { get; }

member this.LocalDateTime : DateTime

Public ReadOnly Property LocalDateTime As DateTime

Property Value

DateTime

The local date and time of the current DateTimeOffset object.

Examples

The following example illustrates several conversions of DateTimeOffset values to local times in the U.S. Pacific Standard Time zone. Note that the last three times are all ambiguous; the property maps all of them to a single date and time in the Pacific Standard Time zone.

 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

Remarks

If necessary, the LocalDateTime property converts the current DateTimeOffset object's date and time to the local system's date and time. The conversion is a two-step operation:

The property converts the current DateTimeOffset object's time to Coordinated Universal Time (UTC).
The property then converts UTC to local time.

There are no invalid times and ambiguous times are mapped to the local zone's standard time. (However, the conversion can create an anomaly: if a DateTimeOffset value that is derived from the local computer reflects an ambiguous date and time, that value can be converted to UTC and then back to a local time that differs from the original time.) The property applies any adjustment rules in the local time zone when it performs this conversion.

This property returns both the date and the time component of a DateTimeOffset object, which makes it useful for DateTimeOffset to DateTime conversion. In addition to performing any necessary time conversion, this property differs from the DateTime property by setting the value of the Kind property of the returned DateTime object to DateTimeKind.Local.

Applies to

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