Add project files.

WinFormDi/ContainerConfig.cs

@@ -0,0 +1,26 @@
+using DIDemoLib;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WinFormDi
+{
+    public static class ContainerConfig
+    {
+        public static IHost? Configure()
+        {
+            var builder = new HostBuilder()
+                .ConfigureServices((_, services) =>
+                {
+                    services
+                    .AddTransient<IMessages, Messages>()
+                    .AddTransient<MainWindow>();
+                });
+            return builder.Build();
+        }
+    }
+}