title: How could I check if a textbox has text?
body: <p>I'm trying to make an if statement to check whether a <code>TextBox</code> has text it.<br>
  So something like this:</p>
  
  <pre><code>if (textbox1 has text)
  {
      //Then do this..
  }
  </code></pre>
  
  <p>How would I write "textbox1 has text"?</p>