IAuthenticationModule.PreAuthenticate Method

When the CanPreAuthenticate property is true, the PreAuthenticate method will return an instance of the Authorization class containing an authentication message.

The following example shows how to use the PreAuthenticate method. For a complete example refer to the AuthenticationManager class.

// The PreAuthenticate method specifies whether the authentication implemented 
// by this class allows pre-authentication. 
// Even if you do not use it, this method must be implemented to obey to the rules 
// of interface implementation.
// In this case it always returns null. 
public Authorization PreAuthenticate(WebRequest request, ICredentials credentials) 
{                
  return null;
}

.NET Framework

.NET Framework Client Profile

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

Reference