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TimeZoneInfo.DaylightName Property

Gets the localized display name for the current time zone's daylight saving time.

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

public string DaylightName { get; }

Property Value

Type: System.String
The display name for the time zone's localized daylight saving time.

A DaylightName property whose value is not String.Empty or null does not necessarily indicate that the time zone supports daylight saving time. To determine whether the time zone supports daylight saving time, check the value of its SupportsDaylightSavingTime property.

In most cases, the DaylightName property of time zones defined in the registry is not String.Empty or null. However, the DaylightName property of custom time zones can be set to String.Empty. This occurs when custom time zones are created by the TimeZoneInfo.CreateCustomTimeZone(String, TimeSpan, String, String) or the TimeZoneInfo.CreateCustomTimeZone(String, TimeSpan, String, String, String, TimeZoneInfo.AdjustmentRule[], Boolean) overload and the disableDaylightSavingTime parameter is true. Therefore, your code should never assume that the value of the DaylightName property is not null or empty.

The DaylightName property is equivalent to the DaylightName property of the TimeZone class.

The following example defines a method named DisplayDateWithTimeZoneName that uses the IsDaylightSavingTime(DateTime) method to determine whether to display a time zone's standard time name or daylight saving time name.

private void DisplayDateWithTimeZoneName(DateTime date1, TimeZoneInfo timeZone)
   Console.WriteLine("The time is {0:t} on {0:d} {1}", 
                     timeZone.IsDaylightSavingTime(date1) ?
                         timeZone.DaylightName : timeZone.StandardName);   

.NET Framework

Supported in: 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.