ClientFormsIdentity::AuthenticationType Property
Gets the type of authentication that is used to authenticate the user.
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
You will typically access a ClientFormsIdentity object as an IIdentity reference to avoid a direct dependency on this class. You can determine whether a user is authenticated by checking the IIdentity::IsAuthenticated property of the identity. However, the user may be authenticated for Windows, but not for client application services. To determine whether the user is authenticated for client application services, you should also confirm that the IIdentity::AuthenticationType property value is "ClientForms". For more information, see the ClientFormsIdentity class overview.
The following example code demonstrates how to use this property through an IIdentity reference to determine whether a user is currently authenticated for client application services. This example assumes that the application is in the default configuration where users are not required to log in again when the authentication cookie expires. Otherwise, the WebException might indicate that the user login has expired. For more information, see How to: Configure Client Application Services.
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.