QueryResults.cs

namespace ConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            var task = RunProgram();
            task.Wait();
        }

        private static async Task RunProgram()
        {
            var auth = new AuthenticationClient();

            var clientId = "";
            var clientSecret = "";
            var username = "";
            var password = "";

            await auth.UsernamePasswordAsync(clientId, clientSecret, username, password);

            var client = new ForceClient(auth.InstanceUrl, auth.AccessToken, "v29.0");

            var accounts = await client.QueryAsync<Account>("SELECT id, name, description FROM Account");

            foreach (var account in accounts.records)
            {
                Console.WriteLine(account.Name);
            }
            
        }
    }

    public class Account
    {
        public string Id { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
    }
}