title: How to reduce the size of thumbsize of scrollbar
body: <p>I've a recording file whose size can be scrolled by a WPF scrollbar(value of scrollbar maximum and minimum is in milliseconds).</p>
  
  <p>I've used a timer control which will keep on querying for the size of recoding file. Each second the size of recording file increases. It can go upto maximum for 12 hrs or a user can stop it in between.</p>
  
  <p>My requirements are :</p>
  
  <ol>
  <li>When we start the recording the thumbsize of scrollbar should be having the length of complete viewport(Scrollable area).</li>
  <li>With progress of recording the thumbsize should decrease.</li>
  </ol>