For example, the full URL for logging in a user could be:

If the user is redirected to the URL specified by the next parameter, then Facebook grants your application a session. This session is appended to the URL as a JSON-decodable object of the form:

In continuing with the above example, the redirect for a successful login would be:

If the user grants your application the offline_access extended permission, 0 gets returned for expires and the session never expires unless the user removes the application. In this case, you should store the session key so the user doesn’t have to log in the next time he or she launches your application.

Once the browser has been redirected successfully and you have your session information, you should automatically close the browser window.
Note: The above code will execute only once. We should note down the above session key, This will be used to auto login into the application.

Then you must see the below 3 Screens

If you don’t see the below then your call back URL or Canvas URL must be incorrect, please check again your application settings and execute the URL again.

37 Comments on Simple 5 Steps to publish on a facebook wall using DotNet C#/ cSharp

Dinesh on Mon, 15th Mar 2010 5:48 am


I have gone through the steps you have given and also I can see the pop-up, but can’t see the result[Content, image and text].

Dinesh on Mon, 15th Mar 2010 5:48 am


I have gone through the steps you have given and also I can see the pop-up, but can’t see the result.

Steven Robert on Mon, 15th Mar 2010 9:13 am


Hi Dinesh, Check Comments from this section if that helps you http://blog.theunical.com/facebook-integration/5-steps-to-publish-on-a-facebook-wall-using-php/

Steven Robert on Mon, 15th Mar 2010 11:14 pm


Dinesh The URL need to be Public Available URL and not a local URL, Check it once.

Nitin on Tue, 27th Apr 2010 9:22 am


I checked the concept. I liked the way you have provided the info..

Greg on Tue, 27th Apr 2010 9:34 am


Hi, great tutorial. Although, having trouble at step 4, I don’t see the 3 screens, I only get a “Success” message. I imagine it’s the callback or canvas URL like you say, but could you elaborate here. You say above, it can be any URL. Surely there is some sort of stipulation?

Faris on Thu, 29th Apr 2010 10:53 pm


Can you please show the code you have to have to initialize a session before calling the post method.

just like you did on the php sample.

appreciate your help.

Kilop on Wed, 19th May 2010 10:19 am


I can’t put it working, i receivce the error “Invalid Signature” all the time.

I Call post method on this way Post(new API(), “http://www.xxxx.com”)

Thanks

Full Time Dot net developer on Fri, 28th May 2010 3:10 am


Fantastic work……..This is what I was looking for……..hank you so much……keep sharing

SanSYS on Thu, 3rd Jun 2010 3:45 am


thx!

Sud on Thu, 1st Jul 2010 7:52 pm


What do I have to pass as the API. I am getting “Session Key invalid or no longer valid.”

Steven Robert on Thu, 1st Jul 2010 10:59 pm


@sud Look into my other post http://blog.theunical.com/facebook-integration/5-steps-to-publish-on-a-facebook-wall-using-php/
and check my comments there, hope your problem get solved

Facebook Application on Mon, 19th Jul 2010 10:38 am


I just recently discovered your Blog and appreciate you sharing your bout with Facebook OApplication with the world. but this site also search best knowledge Facebook Application.
http://www.socialium.com/portfolio.php
“

nidhi on Thu, 22nd Jul 2010 6:21 am


hi
this application is great…and working properly…
but i need a application or any function in facebook api, by which i fetch user’s wall message…..please reply if u have any suggestion …its urgent.
thank u..

shruti on Mon, 26th Jul 2010 4:00 am


Hi ..
Great work..
It is simple but very helpful.
but like Nidhi, I want to fetch all the information like friend list,comments, Wall messages and some other information on my website. Is anyone there who can help me out on this problem..? Its really urgent..

shruti on Tue, 27th Jul 2010 11:58 pm


hi
the following link is very helpful…
http://www.codeproject.com/KB/aspnet/fb_connect_asp_net.aspx
i used it ,its only provides friendlist….
but many other function is also there in facebook api….
by using that i fetched inbox messages,groups,wall messages,

Raja on Fri, 15th Oct 2010 2:13 am


hi Steven your application is really very great and useful.
But I cant able to use your Step 5.. get errors in my page..
May be i am using wrong,
So can u give one sample Dotnet application.

Sudeep on Mon, 15th Nov 2010 8:48 pm


Hi,

Thanks for sharing such a wonderful instruction.

I followed your instructions to get offline access to users facebook wall. It worked like a charm.

However since about a month, new users cannot provide offline_access or publish_stream access to the application. It returns
“&error_code=1&error_msg=Security+check+failed”.

The URL I’m using to get offline access is “http://www.facebook.com/login.php?api_key={API_KEY}&connect_display=popup&v=1.0&next={URL}&cancel_url={URL}&fbconnect=true&return_session=true&session_key_only=true&req_perms=publish_stream,offline_access”

I’ve reported it as a bug in Facebook’s bugzilla but with no result.

I believe that you’ll be able to help me resolve this issue.

Thanks,

Sudeep

Lakshmi Narendra on Mon, 22nd Nov 2010 5:33 am


Thanks for posting this use full information.
Initially it is showing some problems like , need userid and session id … but I rectified those… Thanks for showing some path to rectify this problem

Shalton on Thu, 25th Nov 2010 3:35 am


on this line:
public void Post(facebook.API fbAPI, string appLink)
i’m getting error:
The type or namespace name ‘facebook’ could not be found
I’ve imported all namespaces, where i’m missing.

demo on Tue, 28th Dec 2010 2:23 am


what is to pass in fbAPI parameter?

Yücel on Mon, 3rd Jan 2011 7:53 am


i am stuck at
Step2: Generate One Time Session key

i always get “An error occured, try again later” about last three days.Looks like This manual is expired. need update.

kricksen on Thu, 6th Jan 2011 8:53 am


great i’m searching for a long time …………………….

Facebook Application Developers on Tue, 25th Jan 2011 3:03 am


for some days ago i thought to start progamming and searching our google and found your website its great for me thanks to share its great sir

ecommerce developers on Wed, 23rd Mar 2011 7:41 am


It is really worth reading this article, i will try out this method right now and will see whether it is working fine for me .

Malik on Sun, 10th Apr 2011 7:21 am


sir where to write all these codes in example.php in facebook php files
or in our index.php file

Steven Robert on Sun, 10th Apr 2011 9:09 am


@Malik see this post http://blog.theunical.com/facebook-integration/5-steps-to-publish-on-a-facebook-wall-using-php/

Physics Games on Tue, 12th Apr 2011 4:00 am


This is a great info but i am having issues in generating the session id kindly suggest a work around in this scenario.

Noha on Sun, 29th May 2011 3:09 pm


i need my application to post aytomatically to one of my fanpages from the appname or fanpage name, but not from my account , how can i do this?

Steven Robert on Tue, 31st May 2011 10:11 pm


@Noha Use the Target id parameter, u will get it. See is this example http://blog.theunical.com/facebook-integration/simple-steps-to-publish-on-facebook-fan-page-using-php/

Noha on Wed, 1st Jun 2011 3:50 am


Thanks steven, but i manage to publish on the page wall, but its always from me not from the app.
I’m using c # so i can’t map that php code to c# , but m using facebookApp instance .post(pageid/feed)
And i don’t know this belong to what api, as i got lost w fb :), but i know it’s worked very well w me when publishing from the app on friends walls using the offline access token but i cant get it to post from the APP to the Page

Yogesh Bidichandani on Thu, 7th Jul 2011 6:32 am


Error : The type or namespace name ‘API’ does not exist in the namespace ‘Facebook’ (are you missing an assembly reference?)

Sir i m getting this error, done all the hard work but got stuck here, Please help me out

Facebook Development on Tue, 2nd Aug 2011 2:00 am


Sir i m getting this error, done all the hard work but got stuck here, Please help me out, its great for me thanks to share its great sir

Jobs on Sun, 4th Sep 2011 11:59 am


Thanks for this wonderfull post, it helped me a lot.

Enes on Tue, 24th Jan 2012 2:34 pm


thanks it is a good post

Sahil on Wed, 7th Mar 2012 3:07 am


can anyone tell me to where to put this one-time code in my asp.net project for developing fb application for get user notications..
Thanks in advance ..help me

anilbabu on Thu, 19th Jul 2012 8:07 am


hi ,what is OAUTH and What is the use of oauth,
How can I use OAUTH in ASP.NET pls Tell me One simple EXAMPLE,
pls HElp me
send Source code my mailId:
mandla.anilbabu@gmail.com

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