title: Set fixed Values in a NumericUpDown control
body: <p>In contrast to setting the minimum and maximum value for a <code>NumericUpDown</code> how do I get the user to select only between different Preset Values? (e.g. 5, 8, 10, 15, 20, 25).</p>
  
  <p>EDIT: Can I differentiate between the ValueChanged Event by 1) clicking on the arrows of numericUpDown and by 2) changing the Value manually with the keybaord?</p>