title: Add PresentationCore assembly reference in web project
body: <p>After reading <a href="https://stackoverflow.com/questions/2041783/using-libtiff-from-c-sharp-to-access-tiled-tiff-images">Using LibTiff from C# (to access tiled TIFF images)</a> I decided to try to use .Net built in framework class <a href="http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.tiffbitmapdecoder%28v=vs.110%29.aspx" rel="nofollow noreferrer"><code>TiffBitmapDecoder</code></a> to generate the pdf from tiled TIFF image.</p>
  
  <p>I got a big TIFF image around 4MB, which has tiles. I used iTextSharp before but it is not supporting tiles error.</p>
  
  <p>But how do I add the <code>PresentationCore.dll</code> assembly in my web project reference?
  I could not able to see in <code>Add Reference dialog</code>. I use <code>.Net 4.0 ASP.Net webform project</code></p>
  
  <p><img src="https://i.stack.imgur.com/wZGWN.png" alt="enter image description here"></p>
  
  <p>It shows only System.Windows.Presentation</p>
  
  <p>Also do any one processed tiled TIFF to pdf with .Net built in Framework classes with out using 3rd party libraries like LibTIFF?</p>