DatabaseHelper.cs

public async Task<ObservableCollection<ZoneInfo>> ReadZones(string tableName)
        {

            string fileName = string.Format("{0}.csv", tableName);

            // access the local folder
            StorageFolder appFolder =
            Windows.ApplicationModel.Package.Current.InstalledLocation;

            Stream fileStream = await appFolder.GetFileAsync().OpenStreamForReadAsync(fileName);
         
            using (var textReader = new StreamReader(fileStream))
            {
                ObservableCollection<ZoneInfo> zoneInfoCollection = new ObservableCollection<ZoneInfo>();

                try 
                {
                    var csvReader = new CsvReader(textReader);
                    csvReader.Read();

                    List<ZoneInfo> zoneInfo = csvReader.GetRecords<ZoneInfo>().ToList();
                    zoneInfoCollection = new ObservableCollection<ZoneInfo>(zoneInfo); ;
                    return zoneInfoCollection;

                }
                catch(CsvReaderException ex)
                {
                    return zoneInfoCollection;
                }
                
            }

        }