title: How to move trackbar automatically
body: <p>Hi I'm trying to make <code>MP3</code> player with <code>C#</code> language and I'm facing a problem.</p>
  
  <p>I want to make <code>SeekBar</code> with <code>TrackBar</code>. So, I want my thumb to move periodically.</p>
  
  <p>But it seems like there's no proper function for me to use....</p>
  
  <p>Is there anyone who knows how to do it??</p>