title: Facebook C# SDK, Create Event With Picture
body: <p>i want to create a event but i just no idea how to change the event picture. I knew this is very old question but still i can't find any solution yet and i'm giving up soon... please at least tell me is this bugs from Facebook or anything else?</p>
  
  <p>Here is my code :</p>
  
  <pre><code>Facebook.FacebookClient fb = new Facebook.FacebookClient(accessToken);
  Dictionary&lt;string, object&gt; ev = new Dictionary&lt;string, object&gt;();
  ev.Add("name", model.name);
  ev.Add("start_time", model.start_time);
  ev.Add("end_time", model.end_time);
  ev.Add("description", model.description);
  ev.Add("location", model.location);
  ev.Add("privacy_type", model.privacy_type);
  ev.Add("is_date_only", model.is_date_only);
  //ev.Add("picture", "@https://fbcdn-photos-g-a.akamaihd.net/hphotos-ak-ash3/c0.0.50.50/p50x50/601514_10151470263757778_629077232_s.jpg");  //NOT WORKING
  //ev.Add("source", "@https://fbcdn-photos-g-a.akamaihd.net/hphotos-ak-ash3/c0.0.50.50/p50x50/601514_10151470263757778_629077232_s.jpg");  //NOT WORKING
  //ev.Add("picture", HttpUtility.UrlEncode("@https://fbcdn-photos-g-a.akamaihd.net/hphotos-ak-ash3/c0.0.50.50/p50x50/601514_10151470263757778_629077232_s.jpg"));  //NOT WORKING
  //ev.Add("source", HttpUtility.UrlEncode("https://fbcdn-photos-g-a.akamaihd.net/hphotos-ak-ash3/c0.0.50.50/p50x50/601514_10151470263757778_629077232_s.jpg"));  //NOT WORKING
  //ev.Add("picture", model.picture);     //NOT WORKING               
  
  object EventId = fb.Post("/me/events", ev);
  Dictionary&lt;string, string&gt; p = (new JavaScriptSerializer()).Deserialize&lt;Dictionary&lt;string, string&gt;&gt;(EventId.ToString());
  Dictionary&lt;string, object&gt; pic = new Dictionary&lt;string, object&gt;();
  //pic.Add("source", model.picture);  //NOT WORKING
  //pic.Add("picture", HttpUtility.UrlEncode("https://fbcdn-photos-g-a.akamaihd.net/hphotos-ak-ash3/c0.0.50.50/p50x50/601514_10151470263757778_629077232_s.jpg"));  //NOT WORKING
  //pic.Add("source",HttpUtility.UrlEncode("https://fbcdn-photos-g-a.akamaihd.net/hphotos-ak-ash3/c0.0.50.50/p50x50/601514_10151470263757778_629077232_s.jpg"));  //NOT WORKING
  object objPicture = fb.Post("/" + p["id"] + "/picture", pic);
  </code></pre>
  
  <p>The access token, picture URI and create new event is working fine but not picture. </p>