title: Get full path of a file stored in sharepint documentlibrary
body: <p>I have a file stored in a sharepoint libarary like<br>
          filePathAndName = "http://spstore/sites/appsitename/documentlibraryname/abc.xls"</p>
  
  <p>I need to be able to open the the abc.xls file using
         byte[] buffer = System.IO.File.ReadAllBytes(filePathAndName);</p>
  
  <p>but i get an error stating. uri formats are not supported. How do I get the full path to the file?</p>