修改了CopyTo方法，使用反射可以将列表的内容也可以复制

ViewModels/Dialogs/DeviceDialogViewModel.cs

@@ -23,6 +23,6 @@ public partial class DeviceDialogViewModel : ObservableObject
     [RelayCommand]
     public void AddDevice()
     {
-        device.CopyTo<Device>(_saveDevice);
+        device.CopyTo(_saveDevice);
     }
 }

ViewModels/MainViewModel.cs

@@ -1,4 +1,7 @@
-using CommunityToolkit.Mvvm.ComponentModel;
+using System.Collections.ObjectModel;
+using CommunityToolkit.Mvvm.ComponentModel;
+using PMSWPF.Data.Entities;
+using PMSWPF.Data.Repositories;
 using PMSWPF.Services;
 
 namespace PMSWPF.ViewModels;
@@ -8,16 +11,22 @@ public partial class MainViewModel : ViewModelBase
     private readonly NavgatorServices _navgatorServices;
 
     [ObservableProperty] private ViewModelBase currentViewModel;
+    [ObservableProperty]
+    private ObservableCollection<DbMenu> _menus;
 
     public MainViewModel(NavgatorServices navgatorServices)
     {
         _navgatorServices = navgatorServices;
         _navgatorServices.OnViewModelChanged += () => { CurrentViewModel = _navgatorServices.CurrentViewModel; };
         CurrentViewModel = new HomeViewModel();
+        CurrentViewModel.OnLoaded();
     }
 
 
-    public override void OnLoaded()
+    public override async void OnLoaded()
     {
+        MenuRepositories mr = new MenuRepositories();
+       var menuList= await mr.GetMenu();
+       Menus=new ObservableCollection<DbMenu>(menuList);
     }
 }