I am totally lost finding the right API to create a sign up process like Foursquare. I am attaching a document of what I am trying to do. I have already tried OAuth, JavascriptSDK, Facebook.NET API from Codeplex and FacebookToolkit.NET from Microsoft. Nothing looks what I actually need. I think some one experienced can lean me towards where I should go straight.
Note: I am trying to achieve this via ASP.NET with C#.
You are looking for the Facebook Connect API.
More info for the single login process can be found here
Your document notes the Yelp signup process, which is very low friction and allows the user's information to be available to the website without having to go through Facebook's authentication process.
Yelp, Microsoft Docs, and Pandora are using a feature of Facebook called Instant Personalization. Instant Personalization is not available to developers as of yet and is only available to those three partners.
That being said, you likely would need to use the Facebook Login Button to allow the user to grant you access to their information (including their friends list).
As far as the process of getting a list of friends, use the graph call "me/friends"
I manage FaceSharp, a .NET open source project to help people get started with Facebook Development and will be adding functionality similar to what you are looking to do in the future, perhaps some of that code will help you in your efforts. It's under the MIT license, so take whatever you want.
Hello ,
Facebook Graph Api is the best.The url is http://developers.facebook.com/docs/api
The Graph API uses OAuth 2.0 for authorization. Check out the authentication guide for the details of Facebook's OAuth 2.0 implementation.
OAuth 2.0 is a simpler version of OAuth that leverages SSL for API communication instead of relying on complex URL signature schemes and token exchanges. At a high level, using OAuth 2.0 entails getting an access token for a Facebook user via a redirect to Facebook. After you obtain the access token for a user, you can perform authorized requests on behalf of that user by including the access token in your Graph API requests:
https://graph.facebook.com/220439?access_token=...
Check out the PHP example code or the Python example code on GitHub to see a complete example of obtaining an access token for the current user. The steps to obtain an access token are:
*
Register your application to get an app ID and secret. Your Facebook app ID is your client_id and your Facebook application secret is your client_secret.
*
Redirect the user to https://graph.facebook.com/oauth/authorize with your client_id and the redirect_uri. The redirect_uri parameter needs to begin with your app's URL. For instance, if your URL is http://www.example.com then your redirect URI could be http://www.example.com/oauth_redirect.
https://graph.facebook.com/oauth/authorize? client_id=...& redirect_uri=http://www.example.com/oauth_redirect
* After the user authorizes your application, we redirect the user back to the redirect URI you specified with a verification string in the argument code, which can be exchanged for an oauth access token. Exchange it for an access token by fetching https://graph.facebook.com/oauth/access_token. Pass the exact same redirect_uri as in the previous step:
https://graph.facebook.com/oauth/access_token? client_id=...& redirect_uri=http://www.example.com/oauth_redirect& client_secret=...& code=...
* Use the access token returned by the request above to make requests on behalf of the user: