| System.Web.UI.WebControls (system.web.dll) | class |
This class represents a
"placeholder" control, which is a
container used to store controls that may be added to a page
dynamically at some point in its processing. Placeholders prevent an
HTML page from "collapsing." For
example, if you create a text box control and set the
TextBox.Visible property to
False, no HTML will be rendered for the control.
This could cause the layout of the page to change unexpectedly,
particularly with tables. Placeholders avert this problem. To add a
control to a placeholder, use Add( ). Note that
placeholders, unlike most web controls, derive directly from
System.Web.UI.Control, not from
WebControl.
public class PlaceHolder : System.Web.UI.Control {
// Public Constructors
public
PlaceHolder ( );
}
Hierarchy
System.Object
System.Web.UI.Control(System.ComponentModel.IComponent,
System.IDisposable,
System.Web.UI.IParserAccessor,
System.Web.UI.IDataBindingsAccessor)
PlaceHolder