accessing pages restricting by role restricting selected ACT (Application Center Test) 2nd <allow> element AllowCustomPaging, DataGrid control AllowPaging attribute, DataGrid control AllowSorting attribute, DataGrid control application level error handling 2nd Application object data clearing variables , hardcoding application state, maintenance application-level tracing enabling Application_Start method applications components , tracing and data caching external, executing stress testing arrays, displaying as checkboxes ascending sort , DataGrid and ASPStateTempApplications table ASPStateTempSessions table attributes <trace> element custom controls <forms> element authentication access restriction to selected pages access to pages, restricting by role cookies, Server.Transfer and Forms authentication FormsAuthenticationTicket IAuthenticationModule interface page access restriction Passport authentication principal object tickets creating parameters user principal object Windows Windows authentication <authorization> element