TweetFavGrab.cs

using System;
using System.Collections.Generic;
using Tweetinvi;
using Tweetinvi.Core.Interfaces;
//https://dev.twitter.com/rest/reference/get/favorites/list
namespace Twatter
{
	internal class Program
	{
		private static readonly List<ITweet> tweets = new List<ITweet>();

		private static void Main(string[] args)
		{
			Auth.SetUserCredentials(ADD YOUR OWN CREDS);
			TweetinviEvents.QueryBeforeExecute += (sender, ar) => { Console.WriteLine("API QUERY: " + ar.QueryURL); };

			Timeline_GetUserTimelineFa("USERNAME");
		}

		public static void Timeline_GetUserTimeline(string username)
		{
			var user = User.GetUserFromScreenName(username);

			var timelineTweets = user.GetUserTimeline();
			foreach (var tweet in timelineTweets)
			{
				Console.WriteLine(tweet.Text);
			}
		}
		
		public static void Timeline_GetUserTimelineFa(string username)
		{
			var user = User.GetUserFromScreenName(username);

			var timelineTweets = user.GetFavorites(200);
			tweets.AddRange(timelineTweets);

			foreach (var tweet in timelineTweets)
			{
				Console.WriteLine(tweet.Text);
			}
		}
} 
}