title: Why cant I use the Windows Name space in WPF app but I can use it in a Universal app
body: <p>why am I able to use the Windows Namespace in windows universal application</p>
  
  <p>For example
  using Windows.Networking.Sockets;
  using Windows.Storage.Streams;</p>
  
  <p>But I cant use it in WPF?</p>
  
  <p>I get red lines under Networking and Storage saying that the reference does not exist. </p>
  
  <p>One fix I googled said to add the PresentationFramework as a reference.  Only problem is, I see PresentationFramework in the reference folder.</p>
  
  <p>Thank you</p>