C#: Safely set the Enabled and Visible of a Control across threads.

        /// <summary>

        ///     Safely set the <see cref="Control.Enabled" /> and <see cref="Control.Visible" /> of a control across threads.

        /// </summary>

        /// <param name="control"></param>

        /// <param name="value"></param>

        public static void Usable( this Control control, Boolean value ) {

            if ( null == control ) {

                return;

            }

            if ( control.InvokeRequired ) {

                control.BeginInvoke( new Action( () => {

                    if ( control.IsDisposed ) {

                        return;

                    }

                    control.Visible = value;

                    control.Enabled = value;

                    control.Refresh();

                } ) );

            }

            else {

                control.Visible = value;

                control.Enabled = value;

                control.Refresh();

            }

        }