public async void Execute()
{
var keyboard = BotHelper.GetKeyBoardForContact();
await _botClient.SendTextMessageAsync(_chatId, MessageFactory.AskContactMessage, replyMarkup : keyboard);
}
public async void Execute()
{
MongoDBHelper.AddStudent(_chatId);
var keyboardMarkup = BotHelper.GetKeyBoardForContact();
await _botClient.SendTextMessageAsync(_chatId, MessageFactory.WelcomeMessage, replyMarkup : keyboardMarkup);
}
