Introduction to Avalonia UI

using Avalonia;
using Avalonia.Controls.ApplicationLifetimes;

public class App : Application
{
    public override void Initialize()
    {
        AvaloniaXamlLoader.Load(this);
    }

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

        base.OnFrameworkInitializationCompleted();
    }
}

class Program
{
    [STAThread]
    public static void Main(string[] args)
    {
        BuildAvaloniaApp()
            .StartWithClassicDesktopLifetime(args);
    }

    public static AppBuilder BuildAvaloniaApp()
        => AppBuilder.Configure<App>()
            .UsePlatformDetect()
            .UseSkia()
            .WithInterFont()
            .LogToTrace();
}