Web Server Controls Hierarchy

The following illustration shows the hierarchy of controls in the System.Web.UI.WebControls namespace. Controls in this namespace are called Web server controls.

Most Web server controls derive directly or indirectly from the base class System.Web.UI.WebControls.WebControl. However, the four controls in the upper-right corner (Literal, PlaceHolder, Repeater, and Xml) derive from System.Web.UI.Control. The controls on the left map to HTML elements. The controls in the center are for validating form input. Also in the center are controls that provide rich functionality, such as the Calendar and the AdRotator controls. The controls that provide data-binding support are on the right.

You can develop a custom Web server control by extending an existing Web server control, by combining existing Web server controls, or by creating a control that derives from the base class System.Web.UI.WebControls.WebControl.

See Also

HTML Server Controls Hierarchy