Problem to save to text with rasbperry windows 10 iot uwp?

Target Platforms Desktop
1

I have problem with this visual c# uwp code when I am trying to save to text file with raspberry pi 3 with Windows 10 IoT.
var path = @“urls.txt”;
var folder = Windows.ApplicationModel.Package.Current.InstalledLocation;
var file = await folder.GetFileAsync(path);
var lines = await Windows.Storage.FileIO.ReadLinesAsync(file);
(lines[0]) = textBoxRadio.Text;
(lines[1]) = textBoxRadio2.Text;
await Windows.Storage.FileIO.WriteLinesAsync(file, lines);

Following error message appears
Unhandled exception at 0x75DC0D6F (twinapi.appcore.dll) in blinky.exe: 0xC000027B: An application-internal exception has occurred
(parameters: 0x038CF1D0, 0x00000001). occurred
and the application halted.

Can someone help me?

2

Well, for starters, install location is readonly on Windows Store. You should use Application.persistentDataPath instead. Secondly, Windows.Storage APIs are hard to use, hard to handle errors and are generally very slow. I’d use something like UnityEngine.Windows.File instead.