I need to integrate face book with my asp .net application. Here are the steps i have followed for it.
- I have created face-book application from face-book and got application key and secret key.
- I have used that application key and secret key in my application.
here is my code :
But in this code, "Session["facebook_userId"]" is always giving me null value. can you tell me the reason for this ?
protected void Page_Load(object sender, EventArgs e) {
_fbService.ApplicationKey = FACEBOOK_APPKEY;
_fbService.Secret = FACEBOOK_SECRET;
_fbService.IsDesktopApplication = false;
string sessionKey = Session["facebook_session_key"] as String;
userId = Session["facebook_userId"] as String;
// When the user uses the facebook login page,
// the redirect back here will have the auth_token in the query params
string authToken = Request.QueryString["auth_token"];
if (!String.IsNullOrEmpty(sessionKey))
{
_fbService.SessionKey = sessionKey;
_fbService.UserId = userId;
}
else if (!String.IsNullOrEmpty(authToken))
{
_fbService.CreateSession(authToken);
Session["facebook_session_key"] = _fbService.SessionKey;
Session["facebook_userId"] = _fbService.UserId;
Session["facebook_session_expires"] = _fbService.SessionExpires;
}
else
{
Response.Redirect(@"http://www.facebook.com/login.php?api_key=" +
_fbService.ApplicationKey + @"&v=1.0");
}
if (!IsPostBack)
{
System.Collections.ObjectModel.Collection<User> userinfo = _fbService.GetUserInfo(_fbService.UserId);
Label1.Text = userinfo[0].FirstName + "'s favorite shops";
Image1.ImageUrl = userinfo[0].PictureUrl.ToString();
// Use the FacebookService Component to populate Friends
System.Collections.ObjectModel.Collection<User> Friends = _fbService.GetFriends();
for (int i = 0; i < Friends.Count; i++)
DropDownList2.Items.Add(Friends[i].FirstName.ToString());
}
}
}
Please help me for this !
