写入/读取文件Windows 8.1 AppStore App

Question

I have a Windows 8.1 App from which I want to write to and read from an XML file that is put in the "Assets" folder in the Application package.

I call the following method from the page constructor after the this.InitializeComponent(); line:

private async void ReadXML()
    {
        var uri = new System.Uri("ms-appdata:///Assets/gameInfo.xml");
        StorageFile file = await Windows.Storage.StorageFile.GetFileFromApplicationUriAsync(uri);

        XmlDocument reader = new XmlDocument();
        reader.LoadXml(file.ToString());
        XmlNodeList nodes = reader.DocumentElement.ChildNodes;

        string attr = nodes[0].Attributes[0].InnerText;
        int bestTime;
        if (attr != null && int.TryParse(attr, out bestTime))
            BestTime = bestTime;
    }

When I navigate to the page that contains this code and it runs I get an ArgumentException thrown on the StorageFile file... line. Here is the exception detail:

System.ArgumentException was unhandled by user code
  HResult=-2147024809
  Message=Value does not fall within the expected range.
  Source=mscorlib
  StackTrace:
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
       at LightsOutApp.Random4x4.<ReadXML>d__0.MoveNext()
  InnerException: 

Does anyone have any idea why this exception is being thrown? Thank you for any help.

Answer 1

I tried doing ms-app in stead of ms-appdata and it fixed that error. Thank you for your help.