How To Connect To Facebook From A C# Webservice
Dec 15, 2010
I want to create a webservice that allows user to connect to Facebook. In my webservice, there is a method named "connect" which requires 2 parameters: the username and password (of the Facebook account).
I have to use this username and password to connect to Facebook from the webservice. After that, I want to allow the user to post on their walls...Is is it possible to connect to Facebook using a webservice?
I tried a lot, and I can login to Facebook account, but I can't get the sessionkey and userid.
How can I integrate Facebook in an ASP.NET webservice?
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Mar 4, 2010
if i want my facebook connect site to access user information about a facebook user, is it necessary for that user to be logged in?
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Sep 20, 2010
i created a mathod facebookInfo(string username,string password) ,so i received username and password but after receiving its not possible to login at server side,because ther is only one way to connect to facebook using facebook api ie.
facebookservie.ConnectToFacebook();
and its open IE browser,so there is any way to login automatically and get session,using any javascript or nay other way at server side using ASp.net in C#.
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Sep 16, 2010
I'm using the following step by step guide to connect to Facebook Connect:
http://msdn.microsoft.com/en-us/windows/ee702803.aspx
However I have a problem at the 'Authentication and Initiating a Session' stage.
When I go through the steps, I click on 'Connect' in my browser, which opens a popup, where I login to Facebook and 'Allow' the application to access my account. I'm then redirected to the filename I specify in thw 2nd parameter of the javascript function 'FB.init'.
However, this page then displays:
"Please sign-in with Facebook."
Why is this happening? I'm developing this on localhost,
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May 21, 2010
i can't logout a user when it's connected through facebook connect. I'm using the facebook developer toolkit. Anyone know how to "disconnect" a user ?
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Apr 2, 2010
how revoking authorization works in the ASP.NET Toolkit. I've tried issuing the following:
ConnectSession connect =
new ConnectSession(FacebookHelper.ApiKey(), FacebookHelper.SecretKey());
Auth x = new Auth(fbSession);
x.RevokeAuthorization();
But I get an object reference error during the RevokeAuthorization call. Here's the call definition.
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Jan 25, 2010
ASP.Net C# and FaceBook Connect.
I'm using Facebook connect on my site. If a new user connects through FB i create an account for them and all is fine. What i would also like to do is check to see if they already have a registered account.
So if someone connects that has not logged in but has an account i would like to be able to locate the account in my application a link it. I hoping this could be done via the email address?
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Oct 8, 2010
Facebook connect and change status?
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Dec 19, 2010
I'm looking for template project that uses Facebook Connect instead of ASP.NET Membership service with ASP.NET MVC 1.0/2.0/3.0. It should support connect (login) and logof and storing user data to the database. Is there something like that?
And second question: Would YOU like to participate in building such tamplate? (if similar project doesn't exist)
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Jan 7, 2011
Im testing something on a MojoPortal where i need to seperately add a Facebook connect button and make the user get registered with the website's registration! How do i do that?
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Jul 26, 2010
I've integrated my website with Facebook Connect, authorization/single-sign on all working great.
Now im trying to post something to the user's wall, which im having some problems with.
First of all, im using the "old" JavaScript API (FeatureLoader.js).
These are the Graph API URL's im using:
private const string UserDetails_Url = @"https://graph.facebook.com/{0}?access_token={1}";
private const string Feed_Url = @"https://graph.facebook.com/{0}/feed?access_token={1}";
private const string TokenExchange_Url = @"https://graph.facebook.com/oauth/access_token?{0}";
I'm using the TokenExchange_Url URL to receive the unique user OAuth token to make calls with.
This is working fine, because a) i receive the token back, and b) i can issue HTTP Get Requests to the Graph API (i.e UserDetails_Url) and it works fine.
But, i cannot Post to the User's wall using the Feed_Url.I'm pretty sure the issue is i haven't got the appropriate user permissions to post to a wall (i.e facebook-side setting).
Now, i realise i can use the fbPublish API method client-side to do this, but i want to do it server-side with the Graph API.
I wont bother showing my code which attempts the call to the Graph API to post to the user's wall, as its pretty straightforward (HttpWebRequest, set method to "POST', set content type/length, write bytes to Stream, etc).
I think the problem is i need the user to grant my aplpication "publish_stream" extended permissions.
The Facebook Graph API doco says to do this in your authorization request:
https://graph.facebook.com/oauth/authorize?
client_id=...&
redirect_uri=http://www.example.com/callback&
scope=user_photos,user_videos,publish_stream
Which confuses me because im using the following URL to get the OAuth token:
https://graph.facebook.com/oauth/access_token?bunchofqsparams
Am i using the wrong Token Exchange URL? Why is there two different URL's to seemingly get the same piece of information?
Yes - i have read the Facebook API doco (numerous times), and yes i have read other similar SO questions, but they all result in using the client-side API to publish to wall, i want to do it server side.
For the actual "Facebook Connect" button, i'm using the standard FBML:
<fb:login-button length="long" size="medium" autologoutlink="false" background="light" onlogin="facebookLogin('/login')" class=" fb_login_not_logged_in FB_login_button FB_ElementReady"><a id="RES_ID_fb_login" class="fbconnect_login_button"><img id="RES_ID_fb_login_image" src="http://static.ak.fbcdn.net/rsrc.php/zB6N8/hash/4li2k73z.gif" alt="Connect"></a></fb:login-button>
When i click this (and not logged into Facebook), it pops up a window which the user can login. But it doesnt have the "Request Extended Permissions" dialog - shouldnt it? Or is that another popup i need to manually trigger?
So to sum up, here are my questions:
How do i grant extended permissions to publish to the user's wall?What is the correct URL for obtaining an OAuth token?Is there a definitive source for showing how to post to a user's wall using server-side Graph API calls?
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Oct 15, 2010
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Dec 26, 2010
I'm trying to create a basic application, i created facebook application before but everything has been changed.
I looked every where to create a basic application, but now i'm getting mad because there isn't any working sample. Because of the changed links, facebook api changes, facebook wiki changes i couldn't find a working copy.
write a basic app that gets permission to write user name to screen in facebook developer toolkit asp.net. I looked computerbeacon.net, codeplex, and some other pages but i couldn't succeed.
Edit: I' m adding some screenshots and some codes, it will may be you to find my problem.
[code]....
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I would like to programatically (sp?) open a box asking my users to type in what to publish, but I want it to look like Facebook's own boxes.
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I have website with facebook like box for facebook page (eg, abc) . Now if any new post in their at website it will automatically post at wall or not.
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