using Avalonia; using Avalonia.Controls.ApplicationLifetimes; using Avalonia.Markup.Xaml; namespace ControlCatalog { public class App : Application { public override void Initialize() { AvaloniaXamlLoader.Load(this); } public override void OnFrameworkInitializationCompleted() { if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktopLifetime) desktopLifetime.MainWindow = new MainWindow(); else if (ApplicationLifetime is ISingleViewApplicationLifetime singleViewLifetime) singleViewLifetime.MainView = new MainView(); base.OnFrameworkInitializationCompleted(); } } }