Na, majd otthon ...

src/WorkFlowCheck.MAUI/App.xaml.cs

@@ -1,12 +1,19 @@
-namespace WorkFlowCheck.MAUI
+using Microsoft.Extensions.DependencyInjection;
+using WorkFlowCheck.MAUI.Services;
+
+namespace WorkFlowCheck.MAUI
 {
     public partial class App : Application
     {
-        public App()
+        public App(IServiceProvider serviceProvider)
         {
             InitializeComponent();
 
-            MainPage = new AppShell();
+            //MainPage = new AppShell();
+            var mainPage = new MainPage();
+            mainPage.Initialize(serviceProvider.GetRequiredService<IUserService>());
+            MainPage = mainPage;
+            
         }
     }
 }