title: How to open a pdf file using itextsharp
body: <p>I want to open a existing PDF document in my hard disk.How can I open a PDF document and view it with itextsharp? Or do i have to use adobe PDF reader component to view PDF.</p>
  
  <p>If I use adobe PDF reader component to view PDF document, is it possible to use feature of itextsharp such as split/merge documents, extract images?
  I'm using c#</p>