This documentation is archived and is not being maintained.

WindowsAuthenticationEventArgs Class

Provides data for the WindowsAuthentication_OnAuthenticate event. This class cannot be inherited.


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

public sealed class WindowsAuthenticationEventArgs : EventArgs

The WindowsAuthenticationEventArgs type exposes the following members.

Public methodWindowsAuthenticationEventArgsInitializes a newly created instance of the WindowsAuthenticationEventArgs class.

Public propertyContextGets the HttpContext object for the current HTTP request.
Public propertyIdentityGets the Windows identity passed to the WindowsAuthenticationEventArgs constructor.
Public propertyUserGets or sets the IPrincipal object to be associated with the current request.

Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

The WindowsAuthenticationEventArgs class is used to supply event values to the WindowsAuthentication_OnAuthenticate event and to enable you to specify a custom Windows identity for the current request.

The WindowsAuthenticationModule constructs a WindowsAuthenticationEventArgs object using the Windows identity supplied by IIS and the current HttpContext and passes it to the WindowsAuthentication_OnAuthenticate event.

You can use the User property of the WindowsAuthenticationEventArgs object supplied to the WindowsAuthentication_OnAuthenticate event to set the User property of the current HttpContext to a custom IPrincipal object. If you do not specify a value for the User property during the WindowsAuthentication_OnAuthenticate event, the Windows identity supplied by IIS is used as the identity for the current request. If IIS uses anonymous authentication, then the Identity property is set to the identity returned by the GetAnonymous method.

The WindowsAuthentication_OnAuthenticate event is raised only when the authentication Mode is set to Windows and the WindowsAuthenticationModule is an active HTTP module for the application.

The following code example uses the WindowsAuthentication_OnAuthenticate event to set the User property of the current HttpContext to a custom IPrincipal object.

public void WindowsAuthentication_OnAuthenticate(object sender, WindowsAuthenticationEventArgs args)
  if (!args.Identity.IsAnonymous)
    args.User = new Samples.AspNet.Security.MyPrincipal(args.Identity);

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

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.

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