Post as link type with Facebook Graph API

I am using the Facebook Graph API to publish on a user's wall. I give it these parameters:

message
name
description
picture
link
caption

It posts to the wall, but it is not treating it as a link. I know this because it does not open a new tab when the link is clicked, there is no share action link, and Twitter does not pick it up开发者_如何学编程 because I have it filtering my wall by links only.

I see the Facebook docs has two separate documentation pages for publish "Post" and "Link" objects.. but the links is posting to the same graph path so I am not sure how it is supported to work:

http://developers.facebook.com/docs/reference/api/post

http://developers.facebook.com/docs/reference/api/link

Anyone got this working?

---

Use the facebook API's available on codeplex.com and try this out,

Facebook.Rest.attachment_media_image image1 = new attachment_media_image();

image1.href = "";
image1.src = "";

Facebook.Rest.attachment a = new Facebook.Rest.attachment();
a.media = new List<Facebook.Rest.attachment_media> { image1 };
a.href = "";
a.name = "";
a.caption = "{*actor*}";
a.properties = null;

if(fbapi.Users.HasAppPermission(Enums.ExtendedPermissions.publish_stream))
    fbapi.Stream.Publish(" Your message", a,
                         new List<action_link>()
                         {
                             new action_link() 
                             {
                                 text = "",                                      
                                 href = ""
                             } 
                         },
                         null, 0);

---

What I do when using the open graph is this:

var uri = new Uri(
    "https://graph.facebook.com/me/links?access_token=" + AccessToken);

var data =
    message != null
        ? string.Format(
            "link={0}&message={1}",
            Uri.EscapeDataString(link),
            Uri.EscapeDataString(message))
        : string.Format("link={0}", Uri.EscapeDataString(link));

// (parameters other than link and message are grabbed from a website anyway)

WebClient client = new WebClient();
client.Headers["Content-type"] = "application/x-www-form-urlencoded";
client.Encoding = Encoding.UTF8;
client.UploadStringAsync(uri, "POST", data);