Temporary app data จัดเก็บไฟล์ลง Storage บน Windows Store Apps (C#)

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Devices.Geolocation;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Core;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace WindowsStoreApps
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    /// 

    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
        }

        protected async override void OnNavigatedTo(NavigationEventArgs e)
        {

            string myString = "Welcome to ThaiCreate.Com";

            Windows.Storage.StorageFolder temporaryFolder = Windows.Storage.ApplicationData.Current.TemporaryFolder;

            Windows.Storage.StorageFile sampleFile = await temporaryFolder.CreateFileAsync("dataFile.txt",
                Windows.Storage.CreationCollisionOption.ReplaceExisting);

            await Windows.Storage.FileIO.WriteTextAsync(sampleFile, myString);

            this.lblStatus.Text = "Text file has been created.";
        }

        private void btnGoPage2_Click(object sender, RoutedEventArgs e)
        {
            this.Frame.Navigate(typeof(Page2));
        }
       
    }
}

<Page
    x:Class="WindowsStoreApps.Page2"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:WindowsStoreApps"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <TextBlock x:Name="lblResult" HorizontalAlignment="Left" Margin="93,69,0,0" TextWrapping="Wrap" VerticalAlignment="Top" FontSize="30" Text="Result"/>
    </Grid>

</Page>