Control.Select Method (Boolean, Boolean)
Activates a child control. Optionally specifies the direction in the tab order to select the control from.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The directed and forward parameters are used by container-style controls. When the directed parameter is set to true, the forward parameter is evaluated to determine which control to select. When forward is set to true, the next control in the tab order is selected; when false, the previous control in the tab order is selected.
The Select method activates the control if the control's Selectable style bit is set to true in ControlStyles, it is contained in another control, and all its parent controls are both visible and enabled.
The Windows Forms controls in the following list are not selectable. Controls derived from controls in the list will also not be selectable.