Прописал зависимости и добавил IoC контейнер

Medical/MedicalView/MedicalView.csproj

@@ -8,4 +8,15 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="8.0.0" />
+    <PackageReference Include="NLog.Extensions.Logging" Version="5.3.11" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\MedicalDatabaseContracts\MedicalDatabaseContracts.csproj" />
+    <ProjectReference Include="..\MedicalPostgresqlDatabase\MedicalPostgresqlDatabase.csproj" />
+  </ItemGroup>
+
 </Project>

Medical/MedicalView/Program.cs

@@ -1,9 +1,18 @@
+using MedicalDatabaseContracts;
+using MedicalDatabaseContracts.Models;
+using MedicalPostgresqlDatabase.Storages;
 using MedicalView.Visits;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using NLog.Extensions.Logging;
+using System.Text;
 
 namespace MedicalView
 {
     internal static class Program
     {
+        private static ServiceProvider? _serviceProvider;
+        public static ServiceProvider? ServiceProvider => _serviceProvider;
         /// <summary>
         ///  The main entry point for the application.
         /// </summary>
@@ -13,7 +22,23 @@ namespace MedicalView
             // To customize application configuration such as set high DPI settings or default font,
             // see https://aka.ms/applicationconfiguration.
             ApplicationConfiguration.Initialize();
-            Application.Run(new FormMain());
+            var services = new ServiceCollection();
+            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+            ConfigureServices(services);
+            _serviceProvider = services.BuildServiceProvider();
+            Application.Run(_serviceProvider.GetRequiredService<FormMain>());
+        }
+        private static void ConfigureServices(ServiceCollection services)
+        {
+            services.AddLogging(option =>
+            {
+                option.SetMinimumLevel(LogLevel.Information);
+                option.AddNLog("nlog.config");
+            });
+            ////services.AddTransient<IComponentStorage, ComponentStorage>();
+            services.AddTransient<IStorage<Diagnose>, DiagnosesStorage>();
+
+            services.AddTransient<FormMain>();
         }
     }
 }