title: Detecting multiple PageUp/PageDown key presses
body: <p>I have a NumericUpDown control in WinForms. The Up/Down arrow keys increase/decrease the value by 1. I want to map the PageUp/PageDown keys for larger increments.</p>
  
  <p>The <code>Control.KeyPress</code> event does not get fired with the PageUp/PageDown keys and if I use the <code>Control.KeyUp/Control.KeyDown</code> events, the combination fires only once even if the user keeps the keys pressed for a while.</p>
  
  <p>How could I trap multiple PageUp/PageDown keys presses during long key presses?</p>