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UriSection.Idn Property

Gets an IdnElement object that contains the configuration setting for International Domain Name (IDN) processing in the System.Uri class.

Namespace:  System.Configuration
Assembly:  System (in System.dll)
[ConfigurationPropertyAttribute("idn")]
public IdnElement Idn { get; }

Property Value

Type: System.Configuration.IdnElement
The configuration setting for International Domain Name (IDN) processing in the System.Uri class.

The existing System.Uri class has been extended to provide support for International Resource Identifiers (IRI) and Internationalized Domain Names. Current users will not see any change from the .NET Framework 2.0 behavior unless they specifically enable IRI and IDN. This ensures application compatibility with prior versions of the .NET Framework.

The configuration settings for IRI and IDN can be retrieved using the UriSection class. The Idn property returns the configuration setting for IDN processing in the System.Uri class.

IRI processing must be enabled for IDN processing to be possible. If IRI processing is disabled, then IDN processing will be set to the default setting where the .NET Framework 2.0 behavior is used for compatibility and IDN names are not used.

The Internationalized Domain Name (IDN) attribute only controls IDN processing. All other IRI processing (character normalization, for example) is performed by default.

The configuration setting for the IdnElement will be read once when the first System.Uri class is constructed. Changes to configuration settings after that time are ignored.

For more information on IRI support, see the Remarks section for the System.Uri class.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5 SP1, 3.0 SP1, 2.0 SP1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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