OrpaonVision/OrpaonVision.ConfigApp/App.xaml.cs

using Microsoft.Extensions.DependencyInjection;
using OrpaonVision.ConfigApp.DependencyInjection;
using System.Windows;

namespace OrpaonVision.ConfigApp
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : Application
    {
        private ServiceProvider? _serviceProvider;

        /// <inheritdoc />
        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);

            var services = new ServiceCollection();
            services.AddConfigAppServices();
            services.AddSingleton<MainWindow>();

            _serviceProvider = services.BuildServiceProvider();

            var mainWindow = _serviceProvider.GetRequiredService<MainWindow>();
            mainWindow.Show();
        }

        /// <inheritdoc />
        protected override void OnExit(ExitEventArgs e)
        {
            _serviceProvider?.Dispose();
            base.OnExit(e);
        }
    }

}