title: Winforms - How to prevent Listbox item selection
body: <p>In WinForms I occationally have a loop running over a Listbox selecting Items.</p>
  
  <p>During that time I don't want the user to select items in that listbox with the mouse or keys.</p>
  
  <p>I looked at MyListbox.enabled=false but it grays out all items. Dont't want that.</p>
  
  <p>How to prevent selecting items in a Listbox?</p>