Standard Controls

All the standard ASP.NET controls are contained in the System.Web.UI.Webcontrols namespace. The prefix asp: represents this namespace.

The ASP.NET Framework version 2.0 includes a new feature called Control State. Control State is similar to View State except that it is used to preserve only critical state information. For example, the GridView control uses Control State to store the selected row. Even if you disable View State, the GridView control remembers which row is selected.