Hi
PlaceHolder Reserves a location in the page control
hierarchy for controls that are added programmatically.
Use the PlaceHolder control as a container to store
dynamically added server controls to the Web page. The
PlaceHolder control does not produce any visible output
and is only used as a container for other controls on the
Web page. You can use the Control.Controls collection to
add, insert, or remove a control from the PlaceHolder
control.
HTH
Ravikanth
