title: Visual Basic 2013 show sql select in a textbox when a button is pressed
body: <p>In my project, I have a disabled textbox, which i would like to return me a value from a database when i click on a button, the problem is that I don't really know the code in order to do this. I've tried some tutorials here, but no one explains how to return a value when a button is pressed. 
  My code is pretty much this:    </p>
  
  <pre><code>SELECT calorias_refeicao FROM refeicoes
  </code></pre>
  
  <p>Can someone please help me do this? 
  Thanks in advance. </p>