Category: ASP.NET

Persist control state across postbacks via ViewState.

Store per-user data in Session with timeout configuration.

Share app-wide data with Application (lock on writes).

Read/write HttpCookie via Request/Response.Cookies.

Configure forms authentication in Web.config and set auth cookies.

Restrict folders/pages with authorization rules in Web.config.

Group exclusive choices with GroupName.

Display tabular data with paging/sorting/editing patterns.

Render custom item templates with full markup control.

Lay out repeated items in columns/flows.