I am using Facebook SDK for .NET 7.0.6
With this code I can get name, first name, last name and other attributes, but not the id of the user.
var _fb = new FacebookClient(Session["FbuserToken"].ToString());
dynamic resultMe = _fb.Get("me?fields=id");
return resultMe.id;
How can I get it?
On
HomeController.cs
using Facebook;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Dynamic;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Mvc;
namespace FaceTest.Controllers
{
public class HomeController : Controller
{
public ActionResult Index()
{
ViewBag.UrlFb = GetFacebookLoginUrl();
return View();
}
public ActionResult About()
{
//ViewBag.Message = "Your application description page.";
ViewBag.Name = !String.IsNullOrEmpty(GetProfileName()) ? GetProfileName() : "Inicia Sesión";
ViewBag.Id = !String.IsNullOrEmpty(GetProfileId()) ? GetProfileId() : "Inicia Sesión";
return View();
}
public ActionResult Contact()
{
ViewBag.Message = "Your contact page.";
return View();
}
public string GetFacebookLoginUrl()
{
dynamic parameters = new ExpandoObject();
parameters.client_id = "1766341193627031";
parameters.redirect_uri = "http://localhost:51518/Home/RetornoFb/";
parameters.response_type = "code";
parameters.display = "page";
var extendedPermissions = "publish_actions";
parameters.scope = extendedPermissions;
var _fb = new FacebookClient();
var url = _fb.GetLoginUrl(parameters);
return url.ToString();
}
public ActionResult RetornoFb()
{
var _fb = new FacebookClient();
FacebookOAuthResult oauthResult;
if(!_fb.TryParseOAuthCallbackUrl(Request.Url, out oauthResult))
{
// Error
}
if (oauthResult.IsSuccess)
{
//Pega o Access Token "permanente"
dynamic parameters = new ExpandoObject();
parameters.client_id = "1766341193627031";
parameters.redirect_uri = "http://localhost:51518/Home/RetornoFb/";
parameters.client_secret = "52cee8ef9437e4981302c24a66e13d55";
parameters.code = oauthResult.Code;
dynamic result = _fb.Get("/oauth/access_token", parameters);
var accessToken = result.access_token;
//TODO: Guardar no banco
Session.Add("FbUserToken", accessToken);
}
else
{
// tratar
}
return RedirectToAction("Index");
}
public ActionResult DetalhesDoUsuario()
{
if (Session["FbuserToken"] != null)
{
var _fb = new FacebookClient(Session["FbuserToken"].ToString());
//detalhes do usuario
var request = _fb.Get("me");
var a = request;
}
return RedirectToAction("Index");
}
/* ------------------------------------------------------------------------------------------------------------------------------------------------ */
/* public string GetName(string externalToken)
{
FacebookClient client = new FacebookClient(externalToken);
dynamic resultMe = client.Get("me?fields=id,name");
return resultMe.Name;
}*/
public string GetProfileName()
{
if (Session["FbuserToken"] != null)
{
try
{
var _fb = new FacebookClient(Session["FbuserToken"].ToString());
dynamic resultMe = _fb.Get("me?fields=first_name");
return resultMe.first_name;
}
catch (FacebookOAuthException)
{
return null;
}
}
return null;
}
public string GetProfileId()
{
if (Session["FbuserToken"] != null)
{
try
{
var _fb = new FacebookClient(Session["FbuserToken"].ToString());
dynamic resultMe = _fb.Get("me?fields=id");
return resultMe.id;
}
catch (FacebookOAuthException)
{
return null;
}
}
return null;
}
/* ------------------------------------------------------------------------------------------------------------------------------------------------ */
/*public byte[] GetPhoto(string userId)
{
try
{
string url = "https://graph.facebook.com/" + userId +
"?fields=picture.width(720).height(720)";
WebClient webClient = new WebClient();
string response = webClient.DownloadString(url);
dynamic json = JObject.Parse(response);
string urlPicture = json.picture.data.url;
return webClient.DownloadData(urlPicture);
}
catch (Exception)
{
return null;
}
}*/
public byte[] GetPhoto()
{
try
{
string url = "https://graph.facebook.com/" + GetProfileId() +"?fields=picture.width(480).height(480)";
WebClient webClient = new WebClient();
string response = webClient.DownloadString(url);
dynamic json = JObject.Parse(response);
string urlPicture = json.picture.data.url;
return webClient.DownloadData(urlPicture);
}
catch (Exception)
{
return null;
}
}
/* ------------------------------------------------------------------------------------------------------------------------------------------------ */
/* */
/* ------------------------------------------------------------------------------------------------------------------------------------------------ */
/*
protected IEnumerable<string> GetFriendIds(string externalToken)
{
FacebookClient client = new FacebookClient(externalToken);
dynamic result = client.Get("me/friends");
foreach (dynamic friend in result.data)
{
yield return friend.id;
}
}
*/
/* ------------------------------------------------------------------------------------------------------------------------------------------------ */
public ActionResult ListarAmigos()
{
if (Session["FbuserToken"] != null)
{
var _fb = new FacebookClient(Session["FbuserToken"].ToString());
//listar os amigos
var request = _fb.Get("me/friends");
var a = request;
}
return RedirectToAction("Index");
}
/* ------------------------------------------------------------------------------------------------------------------------------------------------ */
/*
public void Share(string userId, string externalToken, Yipi yipi)
{
dynamic messagePost = new ExpandoObject();
messagePost.link = GetYipiUrl(yipi);
messagePost.message = string.Format(TextMessage, yipi.Message);
FacebookClient client = new FacebookClient(externalToken);
client.Post(userId + "/feed", messagePost);
}
*/
/* ------------------------------------------------------------------------------------------------------------------------------------------------ */
public ActionResult PublicarMensagem()
{
if (Session["FbuserToken"] != null)
{
var _fb = new FacebookClient(Session["FbuserToken"].ToString());
//Postar uma mensagem na timeline
dynamic messagePost = new ExpandoObject();
messagePost.picture = "http://www.rodolfofadino.com.br/wp-content/uploads/2013/12/image_thumb10.png";
messagePost.link = "http://www.rodolfofadino.com.br/2013/12/test-mode-values-para-o-microsoft-advertising-sdk-windows-8/";
messagePost.name = "Post name...";
messagePost.caption = " Post Caption";
messagePost.description = "post description";
messagePost.message = "Mensagem de testes da aplicação";
try
{
var postId = _fb.Post("me/feed", messagePost);
}
catch (FacebookOAuthException ex)
{
//handle oauth exception
}
catch (FacebookApiException ex)
{
//handle facebook exception
}
}
return RedirectToAction("Index");
}
public ActionResult PublicarFoto()
{
if (Session["FbuserToken"] != null)
{
var _fb = new FacebookClient(Session["FbuserToken"].ToString());
//upload de imagem
FacebookMediaObject media = new FacebookMediaObject
{
FileName = "Nome da foto",
ContentType = "image/jpeg"
};
byte[] img = System.IO.File.ReadAllBytes(Server.MapPath("~/Content/rodolfo.jpg"));
media.SetValue(img);
dynamic parameters = new ExpandoObject();
parameters.source = media;
parameters.message = "Descricao";
try
{
dynamic result = _fb.Post("/me/photos", parameters);
}
catch (Exception ex)
{
}
}
return RedirectToAction("Index");
}
}
}
index.cshtml
@{
ViewBag.Title = "Home Page";
}
<div class="jumbotron">
<h1>ASP.NET + Facebook</h1>
<p><a href="@ViewBag.UrlFb" class="btn btn-primary btn-large">Login Facebook</a></p>
</div>
About.cshtml
@{
ViewBag.Title = "About";
}
<h2>@ViewBag.Title.</h2>
<h3>@ViewBag.Name</h3>
<p>@ViewBag.Id</p>
IDs are "App Scoped", a user will get a different (but unique) ID per App. In the API Explorer, you most likely did not select YOUR App, but only the official API Explorer App - which results in a different ID, of course.
In other words: You DO get an ID, and it is the correct one to identify returning users.