Identifies a container control that creates a new ID namespace within a Page object's control hierarchy. This is a marker interface only.
Assembly: System.Web (in System.Web.dll)
Any control that implements this interface creates a new namespace in which all child control ID attributes are guaranteed to be unique within an entire application. The marker provided by this interface allows unique naming of the dynamically generated server control instances within the Web server controls that support data binding. These controls include the Repeater, DataGrid, DataList, CheckBoxList, ChangePassword, LoginView, Menu, SiteMapNodeItem, and RadioButtonList controls.
When you develop templated controls, you should implement this interface to avoid naming conflicts on a page. For more information, see ASP.NET Control Designers Overview.
The following code example demonstrates a templated custom server control that implements the interface. When this custom server control is used in an .aspx file, it will provide a unique namespace for any server controls that it contains.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.