添加DataService为数据服务类，负责数据的加载工作，通过消息来通知DataService更新数据

App.xaml.cs

@@ -8,6 +8,7 @@ using NLog.Extensions.Logging;
 using PMSWPF.Data;
 using PMSWPF.Data.Entities;
 using PMSWPF.Data.Repositories;
+using PMSWPF.Enums;
 using PMSWPF.Services;
 using PMSWPF.ViewModels;
 using PMSWPF.Views;
@@ -34,6 +35,7 @@ public partial class App : Application
         });
 
 
+        container.AddSingleton<DataServices>();
         container.AddSingleton<NavgatorServices>();
         container.AddSingleton<IDialogService, DialogService>();
         container.AddSingleton<GrowlNotificationService>();
@@ -72,16 +74,18 @@ public partial class App : Application
         using (var db = DbContext.GetInstance())
         {
             List<DbMenu> items = new List<DbMenu>();
-            items.Add(new DbMenu() {  Name = "主页", Icon = SegoeFluentIcons.Home.Glyph, ParentId = 0});
+            items.Add(new DbMenu()
-            items.Add(new DbMenu() {  Name = "设备", Icon = SegoeFluentIcons.Devices.Glyph, ParentId = 0});
+                { Name = "主页", Type = MenuType.MainMenu, Icon = SegoeFluentIcons.Home.Glyph, ParentId = 0 });
-            items.Add(new DbMenu() {  Name = "数据转换", Icon = SegoeFluentIcons.Move.Glyph, ParentId = 0});
+            items.Add(new DbMenu()
-            items.Add(new DbMenu() {  Name = "设置", Icon = SegoeFluentIcons.Settings.Glyph, ParentId = 0});
+                { Name = "设备", Type = MenuType.MainMenu, Icon = SegoeFluentIcons.Devices3.Glyph, ParentId = 0 });
-            items.Add(new DbMenu() {  Name = "关于", Icon = SegoeFluentIcons.Info.Glyph, ParentId = 0});
+            items.Add(new DbMenu()
+                { Name = "数据转换", Type = MenuType.MainMenu, Icon = SegoeFluentIcons.ChromeSwitch.Glyph, ParentId = 0 });
+            items.Add(new DbMenu()
+                { Name = "设置", Type = MenuType.MainMenu, Icon = SegoeFluentIcons.Settings.Glyph, ParentId = 0 });
+            items.Add(new DbMenu()
+                { Name = "关于", Type = MenuType.MainMenu, Icon = SegoeFluentIcons.Info.Glyph, ParentId = 0 });
             db.Insertable<DbMenu>(items).ExecuteCommand();
         }
-
-        
-        
     }
 
     private void InitDB()

Data/Entities/DbMenu.cs

@@ -1,4 +1,6 @@
+using PMSWPF.Enums;
 using SqlSugar;
+using SqlSugar.DbConvert;
 
 namespace PMSWPF.Data.Entities;
 
@@ -10,6 +12,8 @@ public class DbMenu
     public string Icon { get; set; }
     public string Name { get; set; }
     public int ParentId { get; set; }
+    [SugarColumn(ColumnDataType = "varchar(20)", SqlParameterDbType = typeof(EnumToStringConvert))]
+    public MenuType Type { get; set; }
     
     [SugarColumn(IsIgnore = true)]
     public List<DbMenu> Items { get; set; }

Data/Repositories/MenuRepository.cs

@@ -63,12 +63,14 @@ public class MenuRepository
         {
             Name = "默认变量表",
             Icon = SegoeFluentIcons.Tablet.Glyph,
+            Type = MenuType.VariableTableMenu,
             ParentId = addDM.Id,
         };
         var addVarTable=new MenuBean()
         {
             Name = "添加变量表",
             Icon = SegoeFluentIcons.Add.Glyph,
+            Type = MenuType.AddVariableTableMenu,
             ParentId = addDM.Id,
         };
         var defTableRes = await _db.Insertable<DbMenu>(defVarTable).ExecuteCommandAsync();

Enums/LoadTypes.cs

@@ -0,0 +1,8 @@
+namespace PMSWPF.Enums;
+
+public enum LoadTypes
+{
+    Devices,
+    Menu,
+    Mqtt
+}

Enums/MenuType.cs

@@ -0,0 +1,9 @@
+namespace PMSWPF.Enums;
+
+public enum MenuType
+{
+    MainMenu,
+    DeviceMenu,
+    VariableTableMenu,
+    AddVariableTableMenu,
+}

Extensions/TaskExtensions.cs

@@ -14,4 +14,16 @@ public static class TaskExtensions
             onError?.Invoke(e);
         }
     }
+    public static async Task Await<T>(this Task<T> task, Action<Exception> onError = null, Action<T> onComplete = null)
+    {
+        try
+        {
+            T res= await task;
+            onComplete?.Invoke(res);
+        }
+        catch (Exception e)
+        {
+            onError?.Invoke(e);
+        }
+    }
 }

Message/LoadMessage.cs

@@ -0,0 +1,11 @@
+using CommunityToolkit.Mvvm.Messaging.Messages;
+using PMSWPF.Enums;
+
+namespace PMSWPF.Message;
+
+public class LoadMessage:ValueChangedMessage<LoadTypes>
+{
+    public LoadMessage(LoadTypes types) : base(types)
+    {
+    }
+}

Message/NavgatorMessage.cs

@@ -5,7 +5,9 @@ namespace PMSWPF.Message;
 
 public class NavgatorMessage : ValueChangedMessage<ViewModelBase>
 {
-    public NavgatorMessage(ViewModelBase value) : base(value)
+    public Object Parameters;
+    public NavgatorMessage(ViewModelBase value,Object parameters=null) : base(value)
     {
+        Parameters=parameters;
     }
 }

Models/MenuBean.cs

@@ -1,3 +1,5 @@
+using PMSWPF.Enums;
+
 namespace PMSWPF.Models;
 
 public class MenuBean
@@ -7,5 +9,7 @@ public class MenuBean
     public string Icon { get; set; }
     public string Name { get; set; }
     public int ParentId { get; set; }
+    
+    public MenuType Type { get; set; }
     public List<MenuBean> Items { get; set; }
 }

Services/DataServices.cs

@@ -0,0 +1,76 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Messaging;
+using Microsoft.Extensions.Logging;
+using PMSWPF.Data.Repositories;
+using PMSWPF.Enums;
+using PMSWPF.Extensions;
+using PMSWPF.Helper;
+using PMSWPF.Message;
+using PMSWPF.Models;
+
+namespace PMSWPF.Services;
+
+public partial class DataServices:ObservableRecipient,IRecipient<LoadMessage>
+{
+    private readonly ILogger<DataServices> _logger;
+    [ObservableProperty]
+    private List<Device> _devices = new List<Device>();
+    [ObservableProperty]
+    private List<MenuBean> menuBeans = new List<MenuBean>();
+    private readonly DeviceRepository _deviceRepository;
+    private readonly MenuRepository _menuRepository;
+
+    public event Action<List<Device>> OnDeviceListChanged;
+    public event Action<List<MenuBean>> OnMenuListChanged;
+
+
+     partial void OnDevicesChanged(List<Device> devices)
+    {
+        OnDeviceListChanged?.Invoke(devices);
+    }
+
+    partial void OnMenuBeansChanged(List<MenuBean> menuBeans)
+    {
+        OnMenuListChanged?.Invoke(menuBeans);
+    }
+    
+
+    public DataServices(ILogger<DataServices> logger )
+    {
+        _logger = logger;
+        IsActive = true;
+         _deviceRepository = new DeviceRepository();
+         _menuRepository = new MenuRepository();
+
+    }
+
+
+
+    public async void Receive(LoadMessage message)
+    {
+        
+        if (!(message.Value is LoadTypes))
+            throw new ArgumentException($"接受到的加载类型错误：{message.Value}");
+        try
+        {
+
+            switch ((LoadTypes)message.Value )
+            {
+                case LoadTypes.Devices:
+                    Devices= await _deviceRepository.GetAll();
+                    break;
+                case LoadTypes.Menu:
+                    MenuBeans= await _menuRepository.GetMenu();
+                    break;
+            
+            }
+        }
+        catch (Exception e)
+        {
+            NotificationHelper.ShowMessage($"加载数据出现了错误：{e.Message}");
+            _logger.LogError($"加载数据出现了错误：{e.Message}");
+
+        }
+        
+    }
+}

Services/NavgatorServices.cs

@@ -29,6 +29,7 @@ public class NavgatorServices : ObservableRecipient, IRecipient<NavgatorMessage>
     public void Receive(NavgatorMessage message)
     {
         CurrentViewModel = message.Value;
+        CurrentViewModel.NavgateParameters = message.Parameters;
     }
 
     public event Action OnViewModelChanged;

ViewModels/DevicesViewModel.cs

@@ -19,24 +19,27 @@ public partial class DevicesViewModel : ViewModelBase
     private readonly DeviceRepository _deviceRepository;
     private readonly ILogger<DevicesViewModel> _logger;
     private readonly IDialogService _dialogService;
+    private readonly DataServices _dataServices;
 
     [ObservableProperty] private ObservableCollection<Device> _devices;
     private readonly MenuRepository _menuRepository;
 
     public DevicesViewModel(
-        ILogger<DevicesViewModel> logger, IDialogService dialogService
+        ILogger<DevicesViewModel> logger, IDialogService dialogService, DataServices dataServices
     )
     {
         _deviceRepository = new DeviceRepository();
         _menuRepository = new MenuRepository();
         _logger = logger;
         _dialogService = dialogService;
+        _dataServices = dataServices;
+
+        WeakReferenceMessenger.Default.Send<LoadMessage>(new LoadMessage(LoadTypes.Devices));
+        _dataServices.OnDeviceListChanged += (devices) => { Devices = new ObservableCollection<Device>(devices); };
     }
 
     public async Task OnLoadedAsync()
     {
-        var ds = await _deviceRepository.GetAll();
-        Devices = new ObservableCollection<Device>(ds);
     }
 
     [RelayCommand]
@@ -56,6 +59,7 @@ public partial class DevicesViewModel : ViewModelBase
                     MenuBean deviceMenu = new MenuBean()
                     {
                         Name = device.Name,
+                        Type = MenuType.DeviceMenu,
                         Icon = SegoeFluentIcons.Devices4.Glyph,
                     };
                     bool addMenuRes = await _menuRepository.AddDeviceMenu(deviceMenu);

ViewModels/MainViewModel.cs

@@ -4,6 +4,7 @@ using CommunityToolkit.Mvvm.Input;
 using CommunityToolkit.Mvvm.Messaging;
 using PMSWPF.Data.Entities;
 using PMSWPF.Data.Repositories;
+using PMSWPF.Enums;
 using PMSWPF.Message;
 using PMSWPF.Models;
 using PMSWPF.Services;
@@ -13,6 +14,7 @@ namespace PMSWPF.ViewModels;
 public partial class MainViewModel : ViewModelBase
 {
     private readonly NavgatorServices _navgatorServices;
+    private readonly DataServices _dataServices;
 
     [ObservableProperty] private ViewModelBase currentViewModel;
     [ObservableProperty]
@@ -20,32 +22,26 @@ public partial class MainViewModel : ViewModelBase
 
     private readonly MenuRepository _menuRepository;
 
-    public MainViewModel(NavgatorServices navgatorServices)
+    public MainViewModel(NavgatorServices navgatorServices,DataServices dataServices)
     {
         _navgatorServices = navgatorServices;
-        _menuRepository = new MenuRepository();
+        _dataServices = dataServices;
+
         _navgatorServices.OnViewModelChanged += () => { CurrentViewModel = _navgatorServices.CurrentViewModel; };
         CurrentViewModel = new HomeViewModel();
         CurrentViewModel.OnLoaded();
         
-        WeakReferenceMessenger.Default.Register<UpdateMenuMessage>( this,UpdateMenu);
+        WeakReferenceMessenger.Default.Send<LoadMessage>(new LoadMessage(LoadTypes.Menu));
-        
+        dataServices.OnMenuListChanged += (menus) =>
-    }
-
-    private async void UpdateMenu(object recipient, UpdateMenuMessage message)
         {
-       await  LoadMenu();
+            Menus = new ObservableCollection<MenuBean>(menus);
+        };
+
     }
 
 
-    public override async void OnLoaded()
+    public override void OnLoaded()
     {
-        await LoadMenu();
-    }
         
-    private async Task LoadMenu()
-    {
-        var menuList= await _menuRepository.GetMenu();
-        Menus=new ObservableCollection<MenuBean>(menuList);
     }
 }

ViewModels/ViewModelBase.cs

@@ -4,5 +4,6 @@ namespace PMSWPF.ViewModels;
 
 public abstract class ViewModelBase : ObservableObject
 {
+    public Object NavgateParameters { get; set; }
     public abstract void OnLoaded();
 }

Views/MainView.xaml

@@ -41,6 +41,7 @@
             MenuItemsSource="{Binding Menus}"
             MenuItemTemplate="{StaticResource NavigationViewMenuItem}"
             ItemInvoked="NavigationView_OnItemInvoked"
+            SelectionChanged="NavigationView_OnSelectionChanged"
             >
 
             <!-- <ui:NavigationView.MenuItems> -->

Views/MainView.xaml.cs

@@ -1,9 +1,11 @@
 using System.Windows;
+using System.Windows.Controls;
 using CommunityToolkit.Mvvm.Messaging;
 using iNKORE.UI.WPF.Modern.Controls;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using PMSWPF.Message;
+using PMSWPF.Models;
 using PMSWPF.ViewModels;
 
 namespace PMSWPF.Views;
@@ -69,6 +71,7 @@ public partial class MainView : Window
     private void NavigationView_OnItemInvoked(NavigationView sender, NavigationViewItemInvokedEventArgs args)
     {
         ViewModelBase navgateVM = App.Current.Services.GetRequiredService<HomeViewModel>();
+        Object parameter =null;
         switch (args.InvokedItem)
         {
             case "主页":
@@ -93,7 +96,13 @@ public partial class MainView : Window
                 break;
         }
 
-        var nm = new NavgatorMessage(navgateVM);
+        var nm = new NavgatorMessage(navgateVM,parameter);
         WeakReferenceMessenger.Default.Send(nm);
     }
+
+    private void NavigationView_OnSelectionChanged(NavigationView sender, NavigationViewSelectionChangedEventArgs args)
+    {
+      var selectMenu=  args.SelectedItem as MenuBean;
+
+    }
 }

Views/VariableTableView.xaml

@@ -17,6 +17,9 @@
         <ikw:SimpleStackPanel Orientation="Horizontal" Spacing="10">
             <TextBlock Text="所属设备:" /> <TextBlock Text="默认变量表" />
         </ikw:SimpleStackPanel>
+        <DataGrid>
+            
+        </DataGrid>
     </ikw:SimpleStackPanel>