var screenName = "TBS";
var tokens = CoreTweet.Tokens.Create(
"{API key}",
"{API secret}",
"{Access token}",
"{Access token secret}");
var parm = new Dictionary<string, object>();
parm["count"] = 100;
parm["screen_name"] = screenName;
var tweets = await tokens.Statuses.UserTimelineAsync(parm);
foreach (var tweet in tweets)
{
Console.WriteLine("{0}: {1}", tweet.User.ScreenName, tweet.Text);
}