Programmatic access to the features provided by the ASP.NET Web Site administration tool is made possible by inclusion of the ''System.Web.Security'' namespace in the ASP.NET program. The classes ''Membership'' and ''Roles'' are used to store, access and modify user information in the ASPNETDB database. The user could be authenticated using the ''Membership.ValidateUser'' or ''FormsAuthentication.RedirectFromLoginPageAuthenticate'' <ref name="authentication_authenticate">{{Cite web|url=http://msdn.microsoft.com/en-us/library/system.web.security.formsauthentication.authenticate.aspx|title=FormsAuthentication.Authenticate Method |accessdate=2008-05-23|publisher=MSDN}}</ref> methods. Page-based user authorization is realized by the usage of the ''AuthorizeRequest'' event of the ''HttpApplication'' class<ref name="msdn_authorizerequest">{{Cite web|url=http://msdn.microsoft.com/en-us/library/system.web.httpapplication.authorizerequest.aspx|title=HttpApplication..::.AuthorizeRequest Event|accessdate=2008-05-23|publisher=MSDN}}</ref>.
