title: WPF C#. need simple help about progress bar
body: <p>I never used progress bar. Searched in internet but could not find something useful.
  So i wanna to make progress bar like this:</p>
  
  <p><img src="https://i.stack.imgur.com/Y3JR3.png" alt="enter image description here"></p>
  
  <p>which must work 10 seconds
  i think it must easy.
  Thanks.</p>