TimeZoneInfo.Local Property

Reference

Definition

Namespace:: System

Assembly:: System.Runtime.dll

Assembly:: System.Core.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: TimeZoneInfo.cs

Source:: TimeZoneInfo.cs

Source:: TimeZoneInfo.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 TimeZoneInfo object that represents the local time zone.

public:
 static property TimeZoneInfo ^ Local { TimeZoneInfo ^ get(); };

public static TimeZoneInfo Local { get; }

public static TimeZoneInfo Local { [System.Security.SecurityCritical] get; }

static member Local : TimeZoneInfo

[<get: System.Security.SecurityCritical>]
static member Local : TimeZoneInfo

Public Shared ReadOnly Property Local As TimeZoneInfo

Property Value

TimeZoneInfo

An object that represents the local time zone.

Attributes: SecurityCriticalAttribute

Examples

The following example retrieves a TimeZoneInfo object that represents the local time zone and outputs its display name, standard time name, and daylight saving time name.

using System;

public class Example
{
   public static void Main()
   {
      TimeZoneInfo localZone = TimeZoneInfo.Local;
      Console.WriteLine("Local Time Zone ID: {0}", localZone.Id);
      Console.WriteLine("   Display Name is: {0}.", localZone.DisplayName);
      Console.WriteLine("   Standard name is: {0}.", localZone.StandardName);
      Console.WriteLine("   Daylight saving name is: {0}.", localZone.DaylightName); 
   }
}
// The example displays output like the following:
//     Local Time Zone ID: Pacific Standard Time
//        Display Name is: (UTC-08:00) Pacific Time (US & Canada).
//        Standard name is: Pacific Standard Time.
//        Daylight saving name is: Pacific Daylight Time.

open System

let localZone = TimeZoneInfo.Local
printfn $"Local Time Zone ID: {localZone.Id}"
printfn $"   Display Name is: {localZone.DisplayName}."
printfn $"   Standard name is: {localZone.StandardName}."
printfn $"   Daylight saving name is: {localZone.DaylightName}."
// The example displays output like the following:
//     Local Time Zone ID: Pacific Standard Time
//        Display Name is: (UTC-08:00) Pacific Time (US & Canada).
//        Standard name is: Pacific Standard Time.
//        Daylight saving name is: Pacific Daylight Time.

Module Example
   Public Sub Main()
      Dim localZone As TimeZoneInfo = TimeZoneInfo.Local
      Console.WriteLine("Local Time Zone ID: {0}", localZone.Id)
      Console.WriteLine("   Display Name is: {0}.", localZone.DisplayName)
      Console.WriteLine("   Standard name is: {0}.", localZone.StandardName)
      Console.WriteLine("   Daylight saving name is: {0}.", localZone.DaylightName) 
   End Sub
End Module
' The example displays output like the following:
'     Local Time Zone ID: Pacific Standard Time
'        Display Name is: (UTC-08:00) Pacific Time (US & Canada).
'        Standard name is: Pacific Standard Time.
'        Daylight saving name is: Pacific Daylight Time.

Remarks

The local time zone is the time zone on the computer where the code is executing.

Important

You should always access the local time zone through the TimeZoneInfo.Local property rather than assigning the local time zone to a TimeZoneInfo object variable. This prevents the TimeZoneInfo object variable from being invalidated by a call to the ClearCachedData method.

On Windows systems, the TimeZoneInfo object returned by the TimeZoneInfo.Local property reflects the setting of the Automatically adjust clock for Daylight Saving Time checkbox in the Control Panel Date and Time application. If the checkbox is unchecked, the cached copy of the local time zone contains no daylight saving time information. This means that:

The local time zone's GetAdjustmentRules method returns an array whose length is zero.
The local time zone's SupportsDaylightSavingTime property returns false.
The local time zone has no ambiguous or invalid times (all calls to IsAmbiguousTime or IsInvalidTime return false).
All calls to IsDaylightSavingTime with individual local times return false.

This is not true, however, if a reference to the local time zone is retrieved using the FindSystemTimeZoneById method.

The Local property corresponds to the CurrentTimeZone property of the TimeZone class.

Applies to

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