DebugVisualizerExtension/NrxDebugVisualizer/App.axaml.cs

using Avalonia;
using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Markup.Xaml;
using Controls.Utilities;
using NrxDebugVisualizer.ViewModels;
using NrxDebugVisualizer.Views;

namespace NrxDebugVisualizer;

public partial class App : Application
{
    public static Settings? Settings { get; set; }
    public override void Initialize()
    {
        AvaloniaXamlLoader.Load(this);
#if DEBUG
        this.AttachDeveloperTools();
#endif
    }

    public override void OnFrameworkInitializationCompleted()
    {
        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
        {
            desktop.MainWindow = new MainWindow
            {
                DataContext = new MainWindowViewModel(),
            };
            Settings = Settings.Load(desktop.MainWindow);

        }
        base.OnFrameworkInitializationCompleted();
    }
}