TimeZoneInfo.SupportsDaylightSavingTime Property

 
System_CAPS_noteNote

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Gets a value indicating whether the time zone has any daylight saving time rules.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

Public ReadOnly Property SupportsDaylightSavingTime As Boolean

Property Value

Type: System.Boolean

true if the time zone supports daylight saving time; otherwise, false.

The value of the SupportsDaylightSavingTime property for the local time zone returned by the TimeZoneInfo.Local property reflects the setting of the Control Panel Date and Time application's checkbox that defines whether the system automatically adjusts for daylight saving time. If it is unchecked, or if no checkbox is displayed for a time zone, the value of this property is false.

The following example retrieves a collection of all time zones that are available on a local system and displays the names of those that do not support daylight saving time.

Dim zones As ReadOnlyCollection(Of TimeZoneInfo) = TimeZoneInfo.GetSystemTimeZones()
For Each zone As TimeZoneInfo In zones
   If Not zone.SupportsDaylightSavingTime Then _
      Console.WriteLine(zone.DisplayName)
Next

Universal Windows Platform
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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