using ICQ.Bot.Args;
using System;

private readonly static IICQBotClient bot = new ICQBotClient("BOT_ID_FROM_ICQ_METABOT");

public static void Main(string[] args)
{
  bot.OnMessage += BotOnMessageReceived;
  var me = bot.GetMeAsync().Result;

  bot.StartReceiving();
  Console.WriteLine($"Start listening to @{me.Nick}");

  Console.ReadLine();
  bot.StopReceiving();
}

private static void BotOnMessageReceived(object sender, MessageEventArgs messageEventArgs)
{
  var message = messageEventArgs.Message;
  bot.SendTextMessageAsync(message.From.UserId, message.Text).Wait();
}