I don't think you had as much of System.IO in Windows Phone 7, but 8 seems to have pretty much all of the standard stuff you expect on a desktop running .NET.
So now that I've got a Windows Phone handy (an HTC 8XT) running Windows Phone 8, I tried to make an insanely basic app to try reading and writing files. Using really standard using (StreamWriter sw = File.CreateText(this.strFileLoc)) seems to work without issue. I've tried running the app, entering & then saving some text, turning the phone off & back on, and the file's contents are still there.
Here's what you do... Start an app. Throw on two buttons, call 'em btnSave and btnLoad. Throw in a single textbox, txtText. Make sure you click on AcceptsReturn for the textbox, just to keep yourself sane while you're typing.
And then here's MainPage.xaml.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Navigation;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
using TextToFile.Resources;
using System.IO;
namespace TextToFile
{
public partial class MainPage : PhoneApplicationPage
{
public string strFileLoc = "";
public MainPage()
{
InitializeComponent();
Windows.ApplicationModel.Package package =
Windows.ApplicationModel.Package.Current;
Windows.Storage.StorageFolder installedLocation =
package.InstalledLocation;
this.strFileLoc = Path.Combine(installedLocation.Path,
"myFile.txt");
}
private void btnSave_Click(object sender, RoutedEventArgs e)
{
string strToWrite = this.txtText.Text;
using (StreamWriter sw = File.CreateText(this.strFileLoc))
{
sw.WriteLine(strToWrite);
sw.Close();
}
}
private void btnLoad_Click(object sender, RoutedEventArgs e)
{
string strText = string.Empty;
if (File.Exists(this.strFileLoc))
{
using (StreamReader sr =
new StreamReader(File.OpenRead(this.strFileLoc)))
{
strText = sr.ReadToEnd();
}
}
else
{
strText = "File doesn't exist";
}
this.txtText.Text = strText;
}
}
}
So far so good. What am I missing?
No comments:
Post a Comment