title: Convert relative path to full URL
body: <p>My main domain is <a href="http://redrocksoftware.com.au" rel="nofollow">http://redrocksoftware.com.au</a>. i have an relative path to a file like /PDF/myfile.pdf</p>
  
  <p>I need to convert this relative path into full URL. something like below.</p>
  
  <p><a href="http://redrocksoftware.com.au/PDF/myfile.pdf" rel="nofollow">http://redrocksoftware.com.au/PDF/myfile.pdf</a></p>
  
  <p>i tried below but did not worked</p>
  
  <p>VirtualPathUtility.ToAbsolute("/PDF/myfile.pdf")</p>