Refactoring durchgeführt

DaSaSo.ViewModel/Window/MainWindowViewModel.cs

@@ -1,6 +1,9 @@
 using DaSaSo.Domain.Model;
 using DaSaSo.EntityFramework;
 using DaSaSo.EntityFramework.Services;
+using DaSaSo.ViewModel.Enums;
+using DaSaSo.ViewModel.Interface;
+using DaSaSo.ViewModel.State.Navigation;
 using Microsoft.Toolkit.Mvvm.Input;
 using System;
 using System.Collections.Generic;
@@ -18,6 +21,8 @@ namespace DaSaSo.ViewModel
         private Client _selectedClient;
         private Project _selectedProject;
         private Buildingsite _selectedBuildingsite;
+
+        public INavigator Navigator { get; set; }
         
         public IRelayCommand ListClientsCommand { get; set; }
         public IRelayCommand ListProjectCommand { get; set; }
@@ -85,8 +90,10 @@ namespace DaSaSo.ViewModel
                 }
             }
         }
-        public MainWindowViewModel()
+        public MainWindowViewModel(INavigator navigator)
         {
+            this.Navigator = navigator;
+            Navigator.UpdateViewModelCommand.Execute(EViewType.Home);
             ListClientsCommand = new RelayCommand(showClients);
             ListProjectCommand = new RelayCommand(listProjecte, () => SelectedClient != null);
             ListBuildingsiteCommand = new RelayCommand(listBuildingsite, () => SelectedProject != null);