program.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using TeamSpeak3QueryApi.Net.Specialized;
using TeamSpeak3QueryApi.Net.Specialized.Notifications;
using TeamSpeak3QueryApi.Net.Specialized.Responses;


namespace rcon
{
    class Program
    {
        private static TeamSpeakClient _client;

        static void Main(string[] args)
        {

            try
            {
                _client = ConnectToTeamspeak().Result;


                while (true)
                {

                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                throw;
            }
        }


        private static async Task<TeamSpeakClient> ConnectToTeamspeak()
        {
            try
            {
                var rc = new TeamSpeakClient(""); // Create rich client instance
                await rc.Connect(); // connect to the server

                await rc.Login("", ""); // login to do some stuff that requires permission
                await rc.UseServer(1); // Use the server with id '1'
                await rc.RegisterServerNotification();
                rc.Subscribe<ClientEnterView>(Test);
                return rc;
            }
            catch (Exception ex)
            {
                return null;
            }
        }

        private static void Test(IReadOnlyCollection<ClientEnterView> obj)
        {
            if (_client != null)
            {
                var clients = GetClients().Result;
            }
        }
        private static async Task<List<GetClientInfo>> GetClients()
        {
            try
            {
                var clients = await _client.GetClients(GetClientOptions.Uid);
                return clients.ToList();
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                throw e;
            }

        }
    }
}