Добавьте файлы проекта.

AppHost.cs

@@ -0,0 +1,47 @@
+using System;
+using CRAWLER.Parsing;
+using CRAWLER.Services;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+
+namespace CRAWLER;
+
+internal static class AppHost
+{
+    public static IHost Create()
+    {
+        return Host.CreateDefaultBuilder()
+            .UseContentRoot(AppContext.BaseDirectory)
+            .ConfigureAppConfiguration((_, config) =>
+            {
+                config.Sources.Clear();
+                config.SetBasePath(AppContext.BaseDirectory);
+                config.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);
+                config.AddEnvironmentVariables();
+            })
+            .ConfigureServices((context, services) =>
+            {
+                services.AddSingleton<IDatabaseConnectionFactory, SqlServerConnectionFactory>();
+                services.AddSingleton<DatabaseInitializer>();
+                services.AddSingleton<InstrumentRepository>();
+                services.AddSingleton<CatalogPageParser>();
+                services.AddSingleton<DetailPageParser>();
+                services.AddSingleton<KtoPoveritClient>();
+                services.AddSingleton<PdfStorageService>();
+                services.AddSingleton<InstrumentCatalogService>();
+                services.AddSingleton<IPdfOpener, PdfShellService>();
+                services.AddSingleton<IFilePickerService, FilePickerService>();
+                services.AddTransient<MainWindow>(provider => new MainWindow(
+                    provider.GetRequiredService<InstrumentCatalogService>(),
+                    provider.GetRequiredService<IPdfOpener>(),
+                    provider.GetRequiredService<IFilePickerService>()));
+            })
+            .UseDefaultServiceProvider((_, options) =>
+            {
+                options.ValidateOnBuild = true;
+                options.ValidateScopes = true;
+            })
+            .Build();
+    }
+}