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FormsIdentity Class

Represents a user identity authenticated using forms authentication. This class cannot be inherited.

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

[AspNetHostingPermissionAttribute(SecurityAction::LinkDemand, Level = AspNetHostingPermissionLevel::Minimal)]
public ref class FormsIdentity sealed : IIdentity

The FormsIdentity class is used by the FormsAuthenticationModule when a user is authenticated with forms authentication. An instance of the FormsIdentity class is created using the FormsAuthenticationTicket that is decrypted from the forms-authentication cookie or from the URL. The new instance of the FormsIdentity class is used to construct a new GenericPrincipal object that is set as the value of the User property for the current HttpContext.

The following code example generates a FormsAuthenticationTicket and then uses it to create an instance of the FormsIdentity class, based on whether the user supplies the correct user name and password on the form.

No code example is currently available or this language may not be supported.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0