title: Automatic vertical scroll bar in WPF TextBlock?
body: <p>I have a <code>TextBlock</code> in WPF. I write many lines to it, far exceeding its vertical height. I expected a vertical scroll bar to appear automatically when that happens, but it didn't. I tried to look for a scroll bar property in the Properties pane, but could not find one.</p>
  
  <p>How can I make vertical scroll bar created automatically for my <code>TextBlock</code> once its contents exceed its height?</p>
  
  <p>Clarification: I would rather do it from the designer and not by directly writing to the XAML.</p>