internal async Task GetInlineMessageResult(InlineQuery query, TelegramBot bot)
        {
            await HandleInlineMessage(query, bot);
            var jsonEncodeResult = JsonConvert.SerializeObject(results);
            var keyPairs = new KeyValuePair<string, string>[] {
                new KeyValuePair<string, string>("inline_query_id", query.ID),
                new KeyValuePair<string, string>("results", jsonEncodeResult),
                new KeyValuePair<string, string>("is_personal", true.ToString()),
                new KeyValuePair<string, string>("cache_time", "0")
            };
            var reply = await bot.HttpClient.PostAsync(bot.AnswerInlineLoc, new FormUrlEncodedContent(keyPairs));

        }
 protected override async Task HandleInlineMessage(InlineQuery query, TelegramBot.TelegramBot bot)
 {
     var userPreferences = PreferenceRegistry.GetUserPreferencesForUser(query.From);
     if (!query.HasParameters || true) //haal eigen rooster op
     {
         var roosterFor = userPreferences.RoosterFor;
         if (roosterFor == null)
             return; //Voor parameterloze queries moeten we een roosterfor hebben
         var day = DateTime.Today;
         for (var i = 0; i < 7; i++, day = day.AddDays(1))
         {
             if (day.DayOfWeek == DayOfWeek.Saturday || day.DayOfWeek == DayOfWeek.Sunday)
                 continue;
             var rooster = await WindesheimRoosterConvertor.GetRooster(userPreferences, day, day);
             if (!rooster.Success)
             {
                 bot.PrintError($"Tijdens het opzoeken van het rooster voor een inline query is iets fout gegaan: {rooster.ErrorMessage}");
                 continue;
             }
             TemplateRoosterFormatToImageProvider provider;
             if (roosterFor.GetType().Name == nameof(Klas))
                 provider = RoosterFormatToImageProvider.Instance;
             else
                 provider = DocentRoosterFormatToImageProvider.Instance;
             var bitmap = provider.GetImageForRooster(rooster.Rooster, userPreferences);
             if(bitmap == null)
                 continue;
             var dateDirectory = day.ToString("yyyyMMdd");
             var directory = $"images/{dateDirectory}";
             if (!Directory.Exists(directory))
                 Directory.CreateDirectory(directory);
             var localUrl = $"{directory}/{query.From.ID}.jpeg";
             
             bitmap.Save(localUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
             string url = $"http://roosterbot.sandervanteinde.nl/{dateDirectory}/{query.From.ID}.jpeg";
             AddPhoto($"rooster-{day.ToString("YYYYMMdd")}-{query.From.ID}", url, GetCaptionForDate(day, dateDirectory), photoWidth: bitmap.Width, photoHeight: bitmap.Height, caption: $"Rooster van {query.From} voor {day.ToString("ddd dd MMM")}");
         }
     }
 }
 protected abstract Task HandleInlineMessage(InlineQuery query, TelegramBot bot);