如何使用Facebook C＃SDK生成User_token

Question

I'm trying to perform a search for public posts by facebook graph api.

I got the access token by executing this code:

        dynamic tokenInfo =
          fb.Get(
            String.Format(
              "/oauth/access_token?client_id={0}&client_secret={1}&grant_type=client_credentials",
              ConsumerKey,
              ConsumerSecret));

        var appAccessToken = (string)tokenInfo.ToString();// tokenInfo.access_token;

And I put this access token in my url like this:

https://graph.facebook.com/search?access_token=111111111111111|xxxxxxxxxxxxxx-xxxxxx&type=post&metadata=1&callback=display&q=voyage&since=2013-07-10&limit=500000

But I'm getting the message bellow:

/**/ display({
   "error": {
      "message": "(#15) Requires session when calling from a desktop app",
      "type": "OAuthException",
      "code": 15
   }
});

Answer 1

I have been trying to find the answer to the same question, From what i learned,

We need to get User_token and use it as,

https://graph.facebook.com/search?access_token={User_token}&type=post&metadata=1&callback=display&q=voyage

You can get an User_token at https://developers.facebook.com/tools/access_token/

Then it is indeed working. But the question is how do we generate User_token?