title: C#: How can I make textarea that accepts only some specific words?
body: <p>How can I make a <code>TextArea</code> that accepts only the words I have already set
  with C# on Visual studio.</p>
  
  <p>I'm a beginner in programming.</p>
  
  <hr>
  
  <p>update:</p>
  
  <p>what (-3) about?
  like I said I'm a beginner, trying to build android game with c#.
  until now just do some mistakes.</p>
  
  <p>this website little complex to handle with but I will get used to it :) and my english poor</p>
  
  <p>thank you all.</p>