edit

XLAB2/AppHost.cs

@@ -0,0 +1,36 @@
+using System;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using XLAB2.Infrastructure;
+
+namespace XLAB2
+{
+    internal static class AppHost
+    {
+        public static IHost Create()
+        {
+            return Host.CreateDefaultBuilder()
+                .UseContentRoot(AppContext.BaseDirectory)
+                .ConfigureAppConfiguration((context, config) =>
+                {
+                    config.Sources.Clear();
+                    config.SetBasePath(AppContext.BaseDirectory);
+                    config.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);
+                    config.AddEnvironmentVariables();
+                })
+                .ConfigureServices((_, services) =>
+                {
+                    services.AddSingleton<IDatabaseConnectionFactory>(_ => SqlServerConnectionFactory.Current);
+                    services.AddTransient<PsvDataService>();
+                    services.AddTransient<MainWindow>(provider => new MainWindow(provider.GetRequiredService<PsvDataService>()));
+                })
+                .UseDefaultServiceProvider((_, options) =>
+                {
+                    options.ValidateOnBuild = true;
+                    options.ValidateScopes = true;
+                })
+                .Build();
+        }
+    }
+}