This method forces a complete repaint of a Form object or control.
object.Refresh
None.
Use the Refresh method when you want to display one form while another form loads.
Generally, painting a form or control is handled automatically while no events are occurring. However, there may be situations where you want the form or control updated immediately. For example, if you use a file list box, a directory list box, or a drive list box to show the current status of the directory structure, you can use Refresh to update the list whenever a change is made to the directory structure.
You cannot use Refresh on Menu or Timer controls.