using System;

using System.Text;

using System.Net;

using System.Web;

using System.Collections.Generic;

using System.Linq;

using System.Text.RegularExpressions;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

​

public class Program

{

    public static void Main(string[] args)

    {

        StringBuilder tempStringBuilder = new StringBuilder();

        //here declaring  twitter friends api.

        string ScreenName = "aaa";

        string friends = Friendsdata(string.Format("https://api.twitter.com/1.1/friends/list.json?screen_name={0}&count={1}", ScreenName, 200));

        JObject j = JObject.Parse(friends);

        JArray data = (JArray)j["users"];

        //filter the list based on your requiremnt

        foreach (var item in data)

        {

            string userId = item["id"].ToString();

            string ScreenNameItem = item["screen_name"].ToString();

            string userName = item["name"].ToString();

            string geo = item["location"].ToString();

            string accountCreatedAt = item["created_at"].ToString();

            string followersCount = item["followers_count"].ToString();

            string friendsCount = item["friends_count"].ToString();

            tempStringBuilder.AppendFormat("<friends><friend_id>{0}</friend_id><friend_name>{1}</friend_name><screen_name>{2}</screen_name><location>{3}</location><created_at>{4}</created_at><followers_count>{5}</followers_count><friends_count>{6}</friends_count></friends>", HttpUtility.HtmlEncode(userId), HttpUtility.HtmlEncode(ScreenNameItem), HttpUtility.HtmlEncode(userName), HttpUtility.HtmlEncode(geo), HttpUtility.HtmlEncode(accountCreatedAt), HttpUtility.HtmlEncode(followersCount), HttpUtility.HtmlEncode(friendsCount));

        }

​

        //Your code goes here

        Console.WriteLine(tempStringBuilder.ToString());

    }

​

    //StringBuilderXML2.Append(tempStringBuilder.ToString());

    public static string Friendsdata(string method)

    {

        //here cosumer key will provide by twitter api ,every twitter user have unique consumerkey.

        var key = "ConsumerKey";

        //here ConsumerSecret will provide by twitter api ,every twitter user have unique //ConsumerSecret

        var secret = "ConsumerSecret";

        var bToken = (key) + ":" + (secret);

        var b64Bearer = Convert.ToBase64String(Encoding.Default.GetBytes(bToken));

        using (var wc = new WebClient())

        {

            wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");

            wc.Headers.Add("Authorization", "Basic " + b64Bearer);

            var tokenPayload = wc.UploadString("https://api.twitter.com/oauth2/token", "grant_type=client_credentials");

            var rgx = new Regex("\"access_token\"\\s*:\\s*\"([^\"]*)\"");

            var accessToken = rgx.Match(tokenPayload).Groups[1].Value;

            wc.Headers.Clear();

            wc.Headers.Add("Authorization", "Bearer " + accessToken);

            string url = method;

            var data = wc.DownloadString(url);

            return data;

        }

    }

}