Unlocks the control after a ScrollBarBase.BeginUpdate method call and causes its immediate repainting.
Once the ScrollBarBase.BeginUpdate method is called, modifying control settings does not lead to the recalculation of view information and control repainting. This is used to perform several modifications without repainting the control after each one individually. After all desired operations have been performed, call the EndUpdate method. This method allows further control modifications and immediately repaints the control to reflect all modifications.