LocalSettings throws an UnauthorizedAccessException after AppInstance.Restart #3957
Description
Describe the bug
LocalSettings throws an UnauthorizedAccessException after AppInstance.Restart.
How can I fix this?
Expected: should be able to access LocalSettings after a restart.
Steps to reproduce the bug
Using Windows 10 and Windows App SDK, create a WinUI 3 desktop application using the template.
Change MainWindow.xaml to contain this:
<StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
<TextBlock x:Name="TimeTextBlock">(unkown)</TextBlock>
<Button x:Name="SetButton" Click="Set_Click">Set time</Button>
<Button x:Name="GetButton" Click="Get_Click">Get time</Button>
<Button x:Name="RestartButton" Click="Restart_Click">Restart</Button>
<TextBlock x:Name="StatusTextBlock">Startup</TextBlock>
</StackPanel>
Change MainWindow.xaml.cs to contain this:
public MainWindow()
{
this.InitializeComponent();
}
private Windows.Storage.ApplicationDataContainer LocalSettings => this._localSettings ??= Windows.Storage.ApplicationData.Current.LocalSettings;
private Windows.Storage.ApplicationDataContainer? _localSettings;
private void Set_Click(object sender, RoutedEventArgs args)
{
try {
DateTimeOffset now = DateTimeOffset.Now;
this.LocalSettings.Values["Time"] = now;
this.StatusTextBlock.Text = "Set value " + now.ToString();
} catch (Exception e) {
this.StatusTextBlock.Text = $"Exception when setting value, type '{e.GetType().Name}' message '{e.Message}'.";
}
}
private void Get_Click(object sender, RoutedEventArgs args)
{
try {
DateTimeOffset? time;
if (this.LocalSettings.Values.TryGetValue("Time", out object? value)) {
time = (DateTimeOffset)value;
} else {
time = null;
}
this.TimeTextBlock.Text = time?.ToString() ?? "(null)";
this.StatusTextBlock.Text = "Got value shown above from LocalSettings";
} catch (Exception e) {
this.StatusTextBlock.Text = $"Exception when getting value, type '{e.GetType().Name}' message '{e.Message}'.";
}
}
private void Restart_Click(object sender, RoutedEventArgs e)
{
AppRestartFailureReason failure = Microsoft.Windows.AppLifecycle.AppInstance.Restart("");
this.StatusTextBlock.Text = $"Restart failed, '{failure.ToString()}'";
}
Run the app. Click on the Get and Set buttons, observe it works.
Then click on Restart. After the application restart, click on Get or Set and receive an UnauthorizedAccessException.
Expected behavior
Should be able to access LocalSettings after a restart.
Screenshots
No response
NuGet package version
None
Packaging type
Packaged (MSIX)
Windows version
Windows 10 version 22H2 (19045, 2022 Update)
IDE
Visual Studio 2022
Additional context
No response