如何使用Facebook C＃SDK获取用户朋友列表？

Question

How can I retrieve User friends list using facebook c# sdk ? And I need To know what permissions allow me to get that information. Below is my own attempt, but it didn't work:

---

    //retrieve all user friends ids & names in 2D array 
    public static string[,] getFriends(string accessToken)
    {
        string[,] friends;
        FacebookClient fb = new FacebookClient(accessToken);
        dynamic friend = fb.Get("me/friends");
        int count = (int)friend.data.Count;
        friends = new string[count, 2];
        for (int i = 0; i <count; i++)
        {
            friends[i, 0] = friend.data[i].id;
            friends[i, 1] = friend.data[i].name;
        }//end for 
        return friends;
    }//end get friends

Answer 1

First you need class to get all the data from result that give by Facebook in JSON format. Then you need gridview to display the data from class.

Here the code to get your friends list:

public class MyFriends
    {
        public long uid { get; set; }
        public string username { get; set; }
        public string first_name { get; set; }
        public string last_name { get; set; }
        public long? friend_count { get; set; }  //nullable
        public string pic_big { get; set; }
        public string birthday { get; set; }
        public string birthday_date { get; set; }
        public string contact_email { get; set; }
    }

protected void friendsList()
{
    var fb = new FacebookClient("YOUR TOKEN HERE");
    var query = string.Format(@"SELECT uid, username, first_name, last_name, friend_count, pic_big, birthday, birthday_date, contact_email 
                        FROM user WHERE uid IN (SELECT uid2 FROM friend WHERE uid1 = me())");

    dynamic parameters = new ExpandoObject();
    parameters.q = query;
    dynamic results = fb.Get("/fql", parameters);

    List<MyFriends> q = JsonConvert.DeserializeObject<List<MyFriends>>(results.data.ToString());

    GridView1.DataSource = q;
    GridView1.DataBind();
}