A ContainerControl represents a control that can function as a container for other controls and provides focus management. Controls that inherit from this class can track the active control they contain, even when the focus moves somewhere within a different container.ets or sets the text associated with this control.(Inherited from Control .). Gets or sets the distance, in pixels, between the top edge of the control and the top edge of its container's client area.(Inherited from Control .). Gets the parent control that is not parented by another Windows Forms control.