public async Task ExecuteCommand(string chatId, User userJoined, User userLeft) { var keyboard = new ReplyKeyboardMarkup(new[] { new KeyboardButton(BotCommands.AndroidApp), new KeyboardButton(BotCommands.IosApp), new KeyboardButton(BotCommands.Return) }, true); var msg = await _messagesService.GetAppMsg(); await _telegramBotClient.SendTextMessageAsync(chatId, msg, ParseMode.Default, false, false, 0, keyboard); }