FaceBook Cover Albums Access Through Asp.net c#

Create one appication in facebook from Developers page.

Then Create these pages:

oAuthFacebooks.cs:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Collections.Specialized;

using System.Net;

using System.IO;

/// <summary>

/// Summary description for oAuthFacebooks

/// </summary>

public class oAuthFacebook

{

    public enum Method { GET, POST };

    public const string AUTHORIZE = "https://graph.facebook.com/oauth/authorize";

    public const string ACCESS_TOKEN = "https://graph.facebook.com/oauth/access_token";

    public const string CALLBACK_URL = "http://localhost:3160/WebSite17/fbcallback.aspx";

    private string _consumerKey = "";

    private string _consumerSecret = "";

    private string _token = "";

    #region Properties

    public string ConsumerKey

    {

        get

        {

            if (_consumerKey.Length == 0)

            {

                _consumerKey = "############"; //Your application ID

            }

            return _consumerKey;

        }

        set { _consumerKey = value; }

    }

    public string ConsumerSecret

    {

        get

        {

            if (_consumerSecret.Length == 0)

            {

_consumerSecret = "###########"; //Your application secret

            }

            return _consumerSecret;

        }

        set { _consumerSecret = value; }

    }

    public string Token { get { return _token; } set { _token = value; } }

    #endregion

    /// <summary>

    /// Get the link to Facebook's authorization page for this application.

    /// </summary>

    /// <returns>The url with a valid request token, or a null string.</returns>

    public string AuthorizationLinkGet()

    {

        return string.Format("{0}?client_id={1}&redirect_uri={2}&scope={3}", AUTHORIZE, this.ConsumerKey, CALLBACK_URL,"user_photos");

    }

    /// <summary>

    /// Exchange the Facebook "code" for an access token.

    /// </summary>

    /// <param name="authToken">The oauth_token or "code" is supplied by Facebook's authorization page following the callback.</param>

    public void AccessTokenGet(string authToken)

    {

        this.Token = authToken;

        string accessTokenUrl = string.Format("{0}?client_id={1}&redirect_uri={2}&client_secret={3}&code={4}",

        ACCESS_TOKEN, this.ConsumerKey, CALLBACK_URL, this.ConsumerSecret, authToken);

        string response = WebRequest(Method.GET, accessTokenUrl, String.Empty);

        if (response.Length > 0)

        {

            //Store the returned access_token

            NameValueCollection qs = HttpUtility.ParseQueryString(response);

            if (qs["access_token"] != null)

            {

                this.Token = qs["access_token"];

            }

        }

    }

    /// <summary>

    /// Web Request Wrapper

    /// </summary>

    /// <param name="method">Http Method</param>

    /// <param name="url">Full url to the web resource</param>

    /// <param name="postData">Data to post in querystring format</param>

    /// <returns>The web server response.</returns>

    public string WebRequest(Method method, string url, string postData)

    {

        HttpWebRequest webRequest = null;

        StreamWriter requestWriter = null;

        string responseData = "";

        webRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;

        webRequest.Method = method.ToString();

        webRequest.ServicePoint.Expect100Continue = false;

        //webRequest.UserAgent = "[You user agent]";

        webRequest.UserAgent = "http://localhost:3160/website17/";

       

        webRequest.Timeout = 20000;

        if (method == Method.POST)

        {

            webRequest.ContentType = "application/x-www-form-urlencoded";

            //POST the data.

            requestWriter = new StreamWriter(webRequest.GetRequestStream());

            try

            {

                requestWriter.Write(postData);

            }

            catch

            {

                throw;

            }

            finally

            {

                requestWriter.Close();

                requestWriter = null;

            }

        }

        responseData = WebResponseGet(webRequest);

        webRequest = null;

        return responseData;

    }

    /// <summary>

    /// Process the web response.

    /// </summary>

    /// <param name="webRequest">The request object.</param>

    /// <returns>The response data.</returns>

    public string WebResponseGet(HttpWebRequest webRequest)

    {

        StreamReader responseReader = null;

        string responseData = "";

        try

        {

            responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream());

            responseData = responseReader.ReadToEnd();

        }

        catch

        {

            throw;

        }

        finally

        {

            webRequest.GetResponse().GetResponseStream().Close();

            responseReader.Close();

            responseReader = null;

        }

        return responseData;

    }

}

Default.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        oAuthFacebook oFB = new oAuthFacebook();

        Response.Redirect(oFB.AuthorizationLinkGet());

    }

}

Fbcallback.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class FBcallback : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        if (Request.QueryString["code"] != null)

        {

            string code = Request.QueryString["code"].ToString();

            oAuthFacebook fbAC = new oAuthFacebook(); //Standard FB class file available on net in c#

            string respnse = "";

            try

            {

                fbAC.AccessTokenGet(code);

                respnse = fbAC.Token;

            }

            catch (Exception ex)

            {

                Response.Redirect("http://localhost:3160/WebSite17/SiteLogin.aspx?error=" + ex.Message);

            }

            if (Session["RedirectURL"] != null && Session["RedirectURL"].ToString() != "")

            {

                Response.Redirect(Session["RedirectURL"].ToString() + "?token=" + respnse + "&source=FB");

            }

            else

            {

                Response.Redirect("http://localhost:3160/WebSite17/SiteLogin.aspx?token=" + respnse);

            }

        }

        else

        {

            Response.Redirect("http://localhost:3160/WebSite17/SiteLogin.aspxerror=code not found" +

                              Request.QueryString["error_reason"].ToString());

        }              

                

    }

}

SiteLogin.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Linq;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

public partial class SiteLogin : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        string token = Request.QueryString["token"];       

        string HitURL = string.Format("https://graph.facebook.com/me/albums?fields=name&access_token={0}", token);

        oAuthFacebook objFbCall = new oAuthFacebook();

        string JSONInfo = objFbCall.WebRequest(oAuthFacebook.Method.GET, HitURL, "");   

        JObject Job = JObject.Parse(JSONInfo);

        JToken Jdata = Job.Root;

        JArray jsonVal = Job.Root["data"] as JArray;

      

        string Coverphotoid = null;

        foreach (var j1 in jsonVal)

        {

            if (j1.Value<string>("name").Equals("Cover Photos"))

                Coverphotoid = j1.Value<string>("id");

        }

        HitURL = string.Format("https://graph.facebook.com/{0}/photos?access_token={1}", Coverphotoid, token);

        objFbCall = new oAuthFacebook();

        JSONInfo = objFbCall.WebRequest(oAuthFacebook.Method.GET, HitURL, "");

        Job = JObject.Parse(JSONInfo);

        Jdata = Job.Root;

        jsonVal = Job.Root["data"] as JArray;

        foreach (var j1 in jsonVal)

        {

      Response.Write(Coverphotoid = j1.Value<string>("source") + " <br />" );

        }

    }

}

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