title: selecting word from textbox
body: <p>I'm looking for a method to get the value for a selected word from textbox.</p>
  
  <p>For example:</p>
  
  <p>I have <code>textbox.Text =" How are you";</code></p>
  
  <p>when I select "are" I should get message with selected word <code>MessegeBox.Show(selectedWord);</code></p>