ExtensionMethods and finetuning

YouTubeViewers.WPF/HostBuilders/AddDbContextHostBuilderExtensions.cs

@@ -0,0 +1,27 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using YouTubeViewers.EntityFramework;
+
+namespace YouTubeViewers.WPF.HostBuilders
+{
+    public static class AddDbContextHostBuilderExtensions
+    {
+        public static IHostBuilder AddDbContext(this IHostBuilder hostBuilder)
+        {
+            hostBuilder.ConfigureServices((context, services) =>
+             {
+                 string connectionString = context.Configuration.GetConnectionString("sqlite");
+                 services.AddSingleton<DbContextOptions>(new DbContextOptionsBuilder().UseSqlite(connectionString).Options);
+                 services.AddSingleton<YouTubeViewersDbContextFactory>();
+             });
+            return hostBuilder;
+        }
+    }
+}