WindowsAuthenticationModule.Authenticate Event
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Occurs when the application authenticates the current request.
public:
event System::Web::Security::WindowsAuthenticationEventHandler ^ Authenticate;public event System.Web.Security.WindowsAuthenticationEventHandler Authenticate;member this.Authenticate : System.Web.Security.WindowsAuthenticationEventHandler Public Custom Event Authenticate As WindowsAuthenticationEventHandler Event Type
Examples
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);
}
}
Public Sub WindowsAuthentication_OnAuthenticate(sender As Object, args As WindowsAuthenticationEventArgs)
If Not args.Identity.IsAnonymous Then
args.User = New Samples.AspNet.Security.MyPrincipal(args.Identity)
End If
End Sub
Remarks
The Authenticate event is raised during the AuthenticateRequest event.
You can access the Authenticate event of the WindowsAuthenticationModule class by specifying a subroutine named WindowsAuthentication_OnAuthenticate in the Global.asax file for your ASP.NET application.
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.
Note
In IIS 7.0 running in Integrated Mode, the Authenticate event of the WindowsAuthenticationModule is not raised when both the ASP.NET WindowsAuthenticationModule and the IIS AnonymousAuthenticationModule modules are enabled. In this scenario, to receive authentication notification, subscribe to the AuthenticateRequest event of the HttpApplication instance. For more information about compatibility issues in Integrated modes, see Moving an ASP.NET Application from IIS 6.0 to IIS 7.0.
