Occurs when user credentials are being validated.
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
The following example shows how to bind an event handler for the event in the Application_Start method of the Global.asax file.
The following example shows an event handler for the event in the Global.asax file. The event handler reads two authentication values from the CustomCredential property and passes them together with the user name and password to a custom authentication class named StudentAuthentication.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.