Get facebook page token - facebook

Question

As off right now i'm creating a post from my private account and on my
page. I'm trying to get the page it self to post the message i have
created. I been reading som documentation about page tokens. But
finding it difficult to find some eksampels. Does anyone of you guys
know the next step to getting to post messages as a page?? Would be
greatly thankful
public void CheckAutorization()
{
string app_Id = "my_app_id";
string app_secret = "my_secret_id";
string scope = "publish_stream, publish_actions";
if (Request["code"] == null)
{
Response.Redirect(string.Format(
"https://graph.facebook.com/oauth/authorize?client_id={0}&redirect_uri={1}&scope={2}",
app_Id, Request.Url.AbsoluteUri, scope));
}
else
{
Dictionary<string, string> tokens = new Dictionary<string, string>();
string url = string.Format("https://graph.facebook.com/oauth/access_token?client_id={0}&redirect_uri={1}&scope={2}&code={3}&client_secret={4}",
app_Id, Request.Url.AbsoluteUri, scope, Request["code"].ToString(), app_secret);
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
StreamReader reader = new StreamReader(response.GetResponseStream());
string vals = reader.ReadToEnd();
foreach (string token in vals.Split('&'))
{
tokens.Add(token.Substring(0, token.IndexOf("=")),
token.Substring(token.IndexOf("=") + 1, token.Length - token.IndexOf("=") - 1));
}
}
string access_token = tokens["access_token"];
var client = new FacebookClient(access_token);
var myAccount = client.Get("/me/accounts");
dynamic parameters = new ExpandoObject();
parameters.message = "test message";
parameters.link = "http://www.facebook.com";
parameters.picture = "http://www.fabric.co.uk/wp-content/uploads/2014/06/Facebook-teen-usage.jpg";
parameters.name = "facebook.fo";
parameters.caption = "test caption";
client.Post("/mypageUrl/feed", parameters);
}
}

Answer 1

What you need to post as a Page is a Page Access Token. Take a look at the Facebook docs about how to get it: https://developers.facebook.com/docs/facebook-login/access-tokens
Basically, you just call /me/accounts to get Access Tokens for all Pages and you use the particular Token to post instead of the User Token.
Here´s an article how to create an Extended Page Access Token without using the PHP SDK: http://www.devils-heaven.com/extended-page-access-tokens-curl/