From http://www.w3schools.com (Copyright Refsnes Data)

ASP.NET PlaceHolder Control

Web Control Reference Complete Web Control Reference

Definition and Usage

The PlaceHolder control is used to reserve space for controls added by code.

Note: The PlaceHolder control does not produce any visible output (it only acts as a container for other controls on the Web page).

Properties

Property Description
runat Specifies that the control is a server control.  Must be set to "server"

Web Control Standard Properties

AccessKey, Attributes, BackColor, BorderColor, BorderStyle, BorderWidth, CssClass, Enabled, Font, EnableTheming, ForeColor, Height, IsEnabled, SkinID, Style, TabIndex, ToolTip, Width

For a full description, go to Web Control Standard Attributes.

Control Standard Properties

AppRelativeTemplateSourceDirectory, BindingContainer, ClientID, Controls, EnableTheming, EnableViewState, ID, NamingContainer, Page, Parent, Site, TemplateControl, TemplateSourceDirectory, UniqueID, Visible

For a full description, go to Control Standard Attributes.

Web Control Reference Complete Web Control Reference

From http://www.w3schools.com (Copyright Refsnes Data)