I have recently been paying attention to someone asking, what is used by the PlaceHolder control in NET. In fact, the PlaceHolder control is used to dynamically load user-defined controls, such as
Private void Page_load (Object Sender,
System.Eventargs E)
{
String p = request.QueryString.get ("p");
PlaceHolder1.controls.clear ();
IF (p == NULL)
PlaceHolder1.controls.add (loadingControl
("Modules /" "Default" ".ascx"));
Else
{
PlaceHolder1.controls.add (loadingControl
("Modules /" P ".ascx"));
}
}