title: Changing tab item of tabcontrol on design view
body: <p>I'm trying to add control to another <code>TabItem</code> on design view, but I can only see the first <code>TabItem</code> with all the controls I previously added and at the moment I can only add controls by hard coding on code view window, therefore I have to compile the program in order to see the results of the controls added by hard coding.</p>
  
  <p>Any help would be appreciated.</p>