title: TextBox formatting with decimals
body: <p>I have a textBox in a winform that will be used to calculate Money values.</p>
  
  <p>The behavior I want is such:</p>
  
  <p>on load:</p>
  
  <p>0,00</p>
  
  <p>If i write something it should substitute from right to left...</p>
  
  <p>So,if I would to display 100</p>
  
  <p>I should type 1 0 0 0 0</p>
  
  <p>in order to textBox progressively show:</p>
  
  <pre>
  0,01 
  0,10 
  1,00 
  10,00 
  100,00 
  </pre>
  
  <p>How can I achieve that?</p>