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XLAB2/App.xaml.cs

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+using System;
+using System.Globalization;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Markup;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using XLAB2.Infrastructure;
+
+namespace XLAB2
+{
+    public partial class App : Application
+    {
+        private IHost _host;
+
+        public App()
+        {
+            ApplyRussianCulture();
+        }
+
+        protected override async void OnStartup(StartupEventArgs e)
+        {
+            base.OnStartup(e);
+
+            try
+            {
+                _host = AppHost.Create();
+                await _host.StartAsync().ConfigureAwait(true);
+
+                MainWindow = _host.Services.GetRequiredService<MainWindow>();
+                MainWindow.Show();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "XLAB2", MessageBoxButton.OK, MessageBoxImage.Error);
+                Shutdown(-1);
+            }
+        }
+
+        protected override async void OnExit(ExitEventArgs e)
+        {
+            if (_host != null)
+            {
+                try
+                {
+                    await _host.StopAsync(TimeSpan.FromSeconds(5)).ConfigureAwait(true);
+                }
+                finally
+                {
+                    _host.Dispose();
+                }
+            }
+
+            base.OnExit(e);
+        }
+
+        private static void ApplyRussianCulture()
+        {
+            var culture = new CultureInfo("ru-RU");
+
+            CultureInfo.DefaultThreadCurrentCulture = culture;
+            CultureInfo.DefaultThreadCurrentUICulture = culture;
+            Thread.CurrentThread.CurrentCulture = culture;
+            Thread.CurrentThread.CurrentUICulture = culture;
+
+            FrameworkElement.LanguageProperty.OverrideMetadata(
+                typeof(FrameworkElement),
+                new FrameworkPropertyMetadata(XmlLanguage.GetLanguage(culture.IetfLanguageTag)));
+        }
+    }
+}