title: Facebook link sharing through API c#
body: <p>I am trying to share post on my facebook wall but i am getting the error. 
  I am using the facebook nuget for the same.</p>
  
  <p>this is my code</p>
  
  <pre><code> Facebook.FacebookClient facebookClient = new 
   Facebook.FacebookClient(accessToken);
  
   dynamic messagePost = new ExpandoObject();
   messagePost.access_token = accessToken;
   //messagePost.picture = "[A_PICTURE]";
   //messagePost.link = "[SOME_LINK]";
   //messagePost.name = "[SOME_NAME]";
   //messagePost.caption = "my caption"; 
   messagePost.message = message;
   //messagePost.description = "my description";
  
   var result = facebookClient.Post("/me/feed", messagePost);
  </code></pre>
  
  <p>I am getting this error.</p>
  
  <blockquote>
    <p>(OAuthException - #2500) An active access token must be used to query information about the current user.</p>
  </blockquote>