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Provides classes and interfaces that enable you to create ASP.NET server controls and ASP.NET Web pages for the user interface of your ASP.NET Web applications.

Created when a user control (.ascx file) is specified for output caching, using either the @ OutputCache page directive or the PartialCachingAttribute attribute, and the user control is inserted into a page's control hierarchy by dynamically loading the user control with the LoadControl(String) method.

Writes Extensible Hypertext Markup Language (XHTML)-specific characters, including all variations of XHTML modules that derive from XHTML, to the output stream for an ASP.NET server control for mobile devices. Override the XhtmlTextWriter class to provide custom XHTML rendering for ASP.NET pages and server controls.

Exposes a node of a hierarchical data structure, including the node object and some properties that describe characteristics of the node. Objects that implement the IHierarchyData interface can be contained in IHierarchicalEnumerable collections, and are used by ASP.NET site navigation and data source controls.

Remarks

This namespace includes the Control class, which provides a common set of functionality for all server controls, which includes HTML server controls, Web server controls, and user controls. It also includes the Page class. This class is generated automatically whenever a request is made for an .aspx file in an ASP.NET Web application. You can inherit from both of these classes.

The namespace also includes classes that provide the server controls with data-binding functionality, the ability to save the view state of a given control or page, and parsing functionality.