public string GetEvent(string uid)
        {
            var result = CalendarManager.GetEventAsJsonObject(uid);

            if (result == null)
            {
                return(null);
            }

            var command = $"SELECT * FROM Veranstaltungen WHERE Veranstaltungen.Uid=\"{uid}\"";

            using (var reader = DatabaseManager.ExecuteReader(command))
            {
                result = Json.MergeObjects(new string[] { result, DatabaseManager.ReadFirstAsJsonObject(GetEventKeyTableDictionary(), reader, null) }, true);
            }

            return(result);
        }