System.Windows.Forms 1.0.5000.0 2.0.0.0 To be added. Provides the functionality for a control to act as a parent for other controls. Method System.Boolean To be added. Activates a specified control. true if the control is successfully activated; otherwise, false. The being activated. 1.0.5000.0 2.0.0.0 Property System.Windows.Forms.Control To be added. To be added. Gets or sets the control that is active on the container control. 1.0.5000.0 2.0.0.0