title: Multiple streams in wcf
body: <p>I am trying upload multiple files using WCF. Since WCF only supports one stream I need to join multiple file streams together on the client and pass this to the service. 
  The files might be huge and cannot be buffered in memory.</p>
  
  <p>How do I do this? Please show some code sample if you have.</p>
  
  <p>Regards,
  Rune</p>