Generates the target-specific markup for the child controls in a composite control to which the control adapter is attached.
Assembly: System.Web (in System.Web.dll)
Override the method when it is necessary to generate target-specific markup for the child control set of a composite control, in addition to the markup for the individual child controls.Notes to Inheritors
When you inherit from the ControlAdapter class, for a composite control, the adapter developer must ensure that the child controls are rendered. If the adapter overrides the method, it should call the method from an override of the Render method.
If the Control.Render method causes the child controls to be rendered but itself does not generate markup, it might be appropriate for the Render method to call its base method, which calls the Control.Render method, instead of implementing an override for the method.