DatabaseHelper.cs

using CsvHelper;
using Parking_Tag_Picker_WRT.Models;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Windows.ApplicationModel;
using Windows.Storage;

namespace Parking_Tag_Picker_WRT.Helpers
{
    public class DatabaseHelper
    {

        public const string AppDBPath = @"ParkingZoneDatabase.db";
        public const string PackageDBPath = @"Databases\ParkingZoneDatabase.db";


        /// <summary>
        /// Load SQL_LiteTable from Solution   
        /// </summary>
        /// <param name="DBPATH"></param>
        /// <returns></returns>
        public async Task<bool> Init(string tableName)
        {
           
            bool isTableExisting = false;

            try
            {
                StorageFile localFile = await ApplicationData.Current.LocalFolder.GetFileAsync(string.Format("{0}.csv", tableName));
                isTableExisting = true;
            }
            catch
            {
                isTableExisting = false;
            }

            if (!isTableExisting)
            {

                StorageFile packagefile = await StorageFile.GetFileFromApplicationUriAsync(new Uri(string.Format(@"ms-appx:///Databases/{0}.csv", tableName)));
                await packagefile.CopyAsync(ApplicationData.Current.LocalFolder);
               
            }

            return true;          
        }

        


        /// <summary>
        ///  Retrieve zone info list from the database.   
        /// </summary>
        /// <returns></returns>
        public async Task<ObservableCollection<ZoneInfo>> ReadZones(string tableName)
        {

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

            // access the local folder
            StorageFolder local = Windows.Storage.ApplicationData.Current.LocalFolder;
            // open the file 'filename' for reading
            Stream fileStream = await local.OpenStreamForReadAsync(fileName);

         
            using (var textReader = new StreamReader(fileStream))
            {
                var csv = new CsvReader(textReader);
                List<ZoneInfo> zoneInfo = csv.GetRecords<ZoneInfo>().ToList();
                ObservableCollection<ZoneInfo> zoneInfoCollection = new ObservableCollection<ZoneInfo>(zoneInfo);
                return zoneInfoCollection;
            }

        }
    
        
    }
}

RequestTagPage.xaml.cs

        async protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            this.navigationHelper.OnNavigatedTo(e);
            ((TagRequestViewModel)this.DataContext).SelectedCouncilId = (string)e.Parameter;
            await _vm.InitZoneInfoAsync();
        }

TagRequestViewModel.cs

        public async Task InitZoneInfoAsync()
        {
            string tableName;
            CouncilId = Int32.Parse(SelectedCouncilId);
            tableName = TableNameDictionary[CouncilId];

            CouncilHeaderDisplayName = CouncilDisplayNameDictionary[CouncilId];

            //Init the table data
            var result = await _dbHelper.Init(tableName);

            //Return zone table
            var zoneResult = await _dbHelper.ReadZones(tableName);
            ZoneInfoCollection = zoneResult;
        }