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Causes the control to redraw the invalidated regions within its client area.
public void Update ();
member this.Update : unit -> unit
Public Sub Update ()
Executes any pending requests for painting.
There are two ways to repaint a form and its contents:
The Invalidate method governs what gets painted or repainted. The Update method governs when the painting or repainting occurs. If you use the Invalidate and Update methods together rather than calling Refresh, what gets repainted depends on which overload of Invalidate you use. The Update method just forces the control to be painted immediately, but the Invalidate method governs what gets painted when you call the Update method.
For more information, see the WM_PAINT topic.