c-sharp-TelegramBotClient_OnUpdate.cs

        private static Task _TelegramBotClient_OnUpdate(Telegram.Bot.Types.Update update)
        {
            if (update.CallbackQuery != null)
            {
                Console.WriteLine(update.CallbackQuery.From.Id + ":" + update.CallbackQuery.Data);

                var sentMessage = _TelegramBotClient.SendMessage(
               //該用戶或是群組的 Id
               chatId: update.CallbackQuery.From.Id,
               text: "收回應訊息 :" + update.CallbackQuery.Data,
               cancellationToken: cts.Token);
                //刪除原本的問句
                 return _TelegramBotClient.DeleteMessage(update.CallbackQuery.Message.Chat.Id, update.CallbackQuery.Message.Id);
            }
            return Task.FromResult<object>(null);
        }