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AnonymousIdentificationSection.Domain Property

Gets or sets the cookie domain.

Namespace:  System.Web.Configuration
Assembly:  System.Web (in System.Web.dll)

public string Domain { get; set; }

Property Value

Type: System.String
The name of the cookie domain. The default is an empty string ("").

This attribute allows sharing of the anonymous identification cookie across domains that have a common DNS namespace (for example, all sites that end in "contoso.com"). The following requirements must be met in order for anonymous identification cookies to be shared:

  • Sites that want to share the cookie need to have common decryption and validation keys.

  • Other anonymous identification configuration attributes such as cookie path and cookie name must be the same for all the sites.

For more information, refer to the HttpCookie class.

The following code example shows how to access the Domain property.

// Get Domain.
string domain =
Console.WriteLine("Anonymous identification domain: {0}",

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, 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.

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