Shape.Update Method ()
Causes the control to redraw the invalidated regions within its client area.
Assembly: Microsoft.VisualBasic.PowerPacks.Vs (in Microsoft.VisualBasic.PowerPacks.Vs.dll)
The Update method executes any pending requests for painting.
There are two ways to repaint a form and its contents:
You can use the Invalidate method with the Update method.
The Invalidate method governs what is painted or repainted. The Update method governs when the painting or repainting occurs. The Update method just forces the control to be painted immediately, but the Invalidate method governs what is painted when you call the Update method.