完成连接OpcUa服务器

DMS.Infrastructure/Interfaces/Services/IOpcUaService.cs

@@ -9,25 +9,15 @@ namespace DMS.Infrastructure.Interfaces.Services
 {
     public interface IOpcUaService
     {
-        /// <summary>
-        /// 创建 OPC UA 会话
-        /// </summary>
-        /// <param name="opcUaServerUrl">OPC UA 服务器地址</param>
-        /// <param name="stoppingToken">取消令牌</param>
-        /// <returns></returns>
-        public Task CreateSession(string opcUaServerUrl, CancellationToken stoppingToken = default);
 
         /// <summary>
         /// 连接到 OPC UA 服务器（异步）
         /// </summary>
         /// <param name="stoppingToken">取消令牌</param>
         /// <returns></returns>
-        public Task ConnectAsync(CancellationToken stoppingToken = default);
+        public Task ConnectAsync(string opcUaServerUrl,CancellationToken stoppingToken = default);
+
 
-        /// <summary>
-        /// 连接到 OPC UA 服务器（同步）
-        /// </summary>
-        public void Connect();
 
         /// <summary>
         /// 断开 OPC UA 服务器连接

DMS.Infrastructure/Services/OpcUaService.cs

@@ -14,7 +14,7 @@ namespace DMS.Infrastructure.Services
     public class OpcUaService : IOpcUaService
     {
         private Session? _session;
-        private string? _serverUrl;
+        private string _serverUrl;
 
         /// <summary>
         /// 创建 OPC UA 会话
@@ -22,17 +22,14 @@ namespace DMS.Infrastructure.Services
         /// <param name="opcUaServerUrl">OPC UA 服务器地址</param>
         /// <param name="stoppingToken">取消令牌</param>
         /// <returns></returns>
-        public async Task CreateSession(string opcUaServerUrl, CancellationToken stoppingToken = default)
+        public async Task CreateSession( CancellationToken stoppingToken = default)
         {
-            if (string.IsNullOrEmpty(opcUaServerUrl))
+          
-            {
-                throw new ArgumentException("OPC UA server URL cannot be null or empty.", nameof(opcUaServerUrl));
-            }
 
             try
             {
-                _session = await OpcUaHelper.CreateOpcUaSessionAsync(opcUaServerUrl, stoppingToken);
+                _session = await OpcUaHelper.CreateOpcUaSessionAsync(_serverUrl, stoppingToken);
-                _serverUrl = opcUaServerUrl;
+                
             }
             catch (Exception ex)
             {
@@ -43,8 +40,13 @@ namespace DMS.Infrastructure.Services
         /// <summary>
         /// 连接到 OPC UA 服务器
         /// </summary>
-        public async Task ConnectAsync(CancellationToken stoppingToken = default)
+        public async Task ConnectAsync(string opcUaServerUrl, CancellationToken stoppingToken = default)
         {
+            _serverUrl = opcUaServerUrl;
+            if (string.IsNullOrEmpty(opcUaServerUrl))
+            {
+                throw new ArgumentException("OPC UA server URL cannot be null or empty.", nameof(opcUaServerUrl));
+            }
             if (string.IsNullOrEmpty(_serverUrl))
             {
                 throw new InvalidOperationException("Server URL is not set. Please call CreateSession first.");
@@ -57,43 +59,10 @@ namespace DMS.Infrastructure.Services
             }
 
             // 重新创建会话
-            await CreateSession(_serverUrl, stoppingToken);
+            await CreateSession( stoppingToken);
         }
 
-        /// <summary>
-        /// 连接到 OPC UA 服务器（同步版本，用于向后兼容）
-        /// </summary>
-        public void Connect()
-        {
-            if (string.IsNullOrEmpty(_serverUrl))
-            {
-                throw new InvalidOperationException("Server URL is not set. Please call CreateSession first.");
-            }
        
-            // 如果已经连接，直接返回
-            if (_session?.Connected == true)
-            {
-                return;
-            }
-
-            // 检查会话是否存在但未连接
-            if (_session != null)
-            {
-                // 尝试重新激活会话
-                try
-                {
-                    _session.Reconnect();
-                    return;
-                }
-                catch
-                {
-                    // 如果重新连接失败，继续到重新创建会话的步骤
-                }
-            }
-
-            // 如果没有会话或重新连接失败，抛出异常提示需要调用 CreateSession
-            throw new InvalidOperationException("Session is not created or connection lost. Please call CreateSession first.");
-        }
 
         /// <summary>
         /// 断开 OPC UA 服务器连接

DMS.WPF/Services/DialogService.cs

@@ -18,6 +18,7 @@ namespace DMS.WPF.Services
             { typeof(ConfirmDialogViewModel), typeof(ConfirmDialog) },
             { typeof(VariableTableDialogViewModel), typeof(VariableTableDialog) },
             { typeof(ImportExcelDialogViewModel), typeof(ImportExcelDialog) },
+            { typeof(ImportOpcUaDialogViewModel), typeof(ImportOpcUaDialog) },
             { typeof(VariableDialogViewModel), typeof(VariableDialog) },
             // { typeof(MqttDialogViewModel), typeof(MqttDialog) }, // Add other mappings here
             // ... other dialogs

DMS.WPF/Services/NavgatorServices.cs

@@ -1,68 +0,0 @@
-using CommunityToolkit.Mvvm.ComponentModel;
-using CommunityToolkit.Mvvm.Messaging;
-using DMS.Helper;
-using DMS.Message;
-using DMS.WPF.ViewModels;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
-using DMS.Core.Enums;
-
-namespace DMS.Services;
-
-public partial class NavgatorServices : ObservableRecipient, IRecipient<NavgatorMessage>
-{
-    // [ObservableProperty]
-    private ViewModelBase currentViewModel;
-
-    public NavgatorServices()
-    {
-        IsActive = true;
-    }
-
-    // partial void OnCurrentViewModelChanging(ViewModelBase viewModel)
-    // {
-    //     viewModel?.OnLoading();
-    // }
-    //
-    // partial void OnCurrentViewModelChanged(ViewModelBase viewModel)
-    // {
-    //     OnViewModelChanged?.Invoke();
-    //     viewModel?.OnLoaded();
-    // }
-
-    public ViewModelBase CurrentViewModel
-    {
-        get => currentViewModel;
-        set { currentViewModel = value; }
-    }
-
-
-    public async void Receive(NavgatorMessage message)
-    {
-        try
-        {
-            ViewModelBase nextViewModel = message.Value;
-            //如果OnExit返回False终止跳转
-
-            if (currentViewModel != null)
-            {
-                var isExit = await currentViewModel.OnExitAsync();
-                if (!isExit)
-                {
-                    return;
-                }
-            }
-
-            nextViewModel?.OnLoading();
-            CurrentViewModel = message.Value;
-            OnViewModelChanged?.Invoke();
-            currentViewModel?.OnLoaded();
-        }
-        catch (Exception e)
-        {
-            NotificationHelper.ShowError($"切换视图时发生了错误：{e.Message}", e);
-        }
-    }
-
-    public event Action OnViewModelChanged;
-}

DMS.WPF/Services/NavigationService.cs

@@ -1,14 +1,15 @@
 // 文件: DMS.WPF/Services/NavigationService.cs
 
+using DMS.Helper;
+using DMS.ViewModels;
 using DMS.WPF.ViewModels;
+using DMS.WPF.ViewModels.Items;
+using DMS.WPF.Views;
 using Microsoft.Extensions.DependencyInjection;
 using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using System.Windows;
-using DMS.ViewModels;
-using DMS.WPF.ViewModels.Items;
-using DMS.WPF.Views;
 
 namespace DMS.WPF.Services;
 
@@ -39,6 +40,13 @@ public class NavigationService : INavigationService
 
         var mainViewModel = App.Current.Services.GetRequiredService<MainViewModel>();
         var viewModel = GetViewModelByKey(menu.TargetViewKey);
+        if (viewModel == null)
+        {
+
+            NotificationHelper.ShowError($"切换界面失败，没有找到界面：{menu.TargetViewKey}");
+            return;
+        }
+
 
         if (viewModel is INavigatable navigatableViewModel)
         {
@@ -70,7 +78,7 @@ public class NavigationService : INavigationService
             case "SettingView":
                 return App.Current.Services.GetRequiredService<SettingViewModel>();
             default:
-                throw new KeyNotFoundException($"未找到与键 '{key}' 关联的视图模型类型。请检查 NavigationService 的映射配置。");
+                return null;
         }
     }
 }

DMS.WPF/ViewModels/DevicesViewModel.cs

@@ -106,8 +106,8 @@ public partial class DevicesViewModel : ViewModelBase, INavigatable
                              {
                                  Header = device.Name,
                                  Icon = SegoeFluentIcons.Devices2.Glyph,
-                                 TargetViewKey = "DevicesView"
+                                 TargetViewKey = "DeviceDetailView"
-                             };
+            };
             if (device.IsAddDefVarTable)
             {
                 dto.VariableTable = new VariableTableDto()

DMS.WPF/ViewModels/Dialogs/ImportOpcUaDialogViewModel.cs

@@ -2,7 +2,9 @@ using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using DMS.Core.Models;
 using DMS.Helper;
+using DMS.Infrastructure.Interfaces.Services;
 using DMS.WPF.ViewModels.Items;
+using Opc.Ua;
 using Opc.Ua.Client;
 using System.Collections.ObjectModel;
 
@@ -27,14 +29,25 @@ public partial class ImportOpcUaDialogViewModel : DialogViewModelBase<List<Varia
     [ObservableProperty]
     private bool _isConnected;
 
+    [ObservableProperty]
+    private string _connectButtonText="连接服务器";
+
+    [ObservableProperty]
+    private bool _isConnectButtonEnabled = true;
+
     private Session _session;
 
-    public ImportOpcUaDialogViewModel()
+    private readonly IOpcUaService _opcUaService;
+
+    private CancellationTokenSource _cancellationTokenSource;
+
+    public ImportOpcUaDialogViewModel(IOpcUaService opcUaService)
     {
         //OpcUaNodes = new ObservableCollection<OpcUaNode>();
         SelectedNodeVariables = new ObservableCollection<Variable>();
-        // Automatically connect when the ViewModel is created
+        this._opcUaService = opcUaService;
-        //ConnectC.Execute(null);
+
+        _cancellationTokenSource=new CancellationTokenSource();
 
     }
 
@@ -44,27 +57,29 @@ public partial class ImportOpcUaDialogViewModel : DialogViewModelBase<List<Varia
         try
         {
             // 断开现有连接
-            if (_session != null && _session.Connected)
+            if (!_opcUaService.IsConnected())
             {
-                await _session.CloseAsync();
+               await _opcUaService.ConnectAsync(EndpointUrl, _cancellationTokenSource.Token);
-                _session.Dispose();
-                _session = null;
             }
 
-            IsConnected = false;
+            IsConnected= _opcUaService.IsConnected();
-            SelectedNodeVariables.Clear();
+            if (IsConnected)
+            {
+                ConnectButtonText = "已连接";
+                IsConnectButtonEnabled = false;
+            }
 
-            //_session = await ServiceHelper.CreateOpcUaSessionAsync(EndpointUrl);
-
-            NotificationHelper.ShowSuccess($"已连接到 OPC UA 服务器: {EndpointUrl}");
-            IsConnected = true;
 
             // 浏览根节点
+            var rootNodeId = new NodeId(ObjectIds.ObjectsFolder);
+            var list=_opcUaService.BrowseNodes(rootNodeId);
             //await BrowseNodes(OpcUaNodes, ObjectIds.ObjectsFolder);
         }
         catch (Exception ex)
         {
             IsConnected = false;
+            IsConnectButtonEnabled = false;
+            ConnectButtonText = "连接服务器";
             NotificationHelper.ShowError($"连接 OPC UA 服务器失败: {EndpointUrl} - {ex.Message}", ex);
         }
     }

DMS.WPF/ViewModels/MqttsViewModel.cs

@@ -17,7 +17,6 @@ public partial class MqttsViewModel : ViewModelBase
     private readonly DataServices _dataServices;
     private readonly IDialogService _dialogService;
     private readonly ILogger<MqttsViewModel> _logger;
-    private readonly NavgatorServices _navgatorServices;
     [ObservableProperty]
     private ObservableCollection<MqttServerItemViewModel> _mqtts;
 

DMS.WPF/ViewModels/VariableTableViewModel.cs

@@ -286,7 +286,7 @@ partial class VariableTableViewModel : ViewModelBase, INavigatable
             }
 
             // 显示OPC UA导入对话框，让用户选择要导入的变量
-            ImportOpcUaDialogViewModel importOpcUaDialogViewModel = new ImportOpcUaDialogViewModel();
+            ImportOpcUaDialogViewModel importOpcUaDialogViewModel = App.Current.Services.GetRequiredService<ImportOpcUaDialogViewModel>() ;
             var importedVariables = await _dialogService.ShowDialogAsync(importOpcUaDialogViewModel);
             if (importedVariables == null || !importedVariables.Any())
             {

DMS.WPF/Views/Dialogs/ImportOpcUaDialog.xaml

@@ -15,6 +15,7 @@
     mc:Ignorable="d">
     <Grid>
         <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
             <RowDefinition Height="*" />
         </Grid.RowDefinitions>
         <Grid.ColumnDefinitions>
@@ -22,9 +23,31 @@
             <ColumnDefinition Width="2*" />
         </Grid.ColumnDefinitions>
 
+        <!--  连接区域  -->
+        <StackPanel
+            Grid.Row="0"
+            Grid.Column="0"
+            Grid.ColumnSpan="2"
+            Margin="0,0,0,10"
+            Orientation="Horizontal">
+            <TextBox
+                x:Name="EndpointUrlTextBox"
+                Width="300"
+                Margin="0,0,10,0"
+                VerticalAlignment="Center"
+                IsEnabled="False"
+                Text="{Binding EndpointUrl, UpdateSourceTrigger=PropertyChanged}" />
+            <Button
+                x:Name="ConnectButton"
+                Command="{Binding ConnectCommand}"
+                Content="{Binding ConnectButtonText}"
+                IsEnabled="{Binding IsConnectButtonEnabled}"
+                Style="{StaticResource AccentButtonStyle}" />
+        </StackPanel>
+
         <!--  节点树  -->
         <TreeView
-            Grid.Row="0"
+            Grid.Row="1"
             Grid.Column="0"
             Margin="0,0,10,0"
             ItemsSource="{Binding OpcUaNodes}"
@@ -48,7 +71,7 @@
 
         <!--  变量列表  -->
         <DataGrid
-            Grid.Row="0"
+            Grid.Row="1"
             Grid.Column="1"
             AutoGenerateColumns="False"
             IsReadOnly="True"

DMS.WPF/Views/Dialogs/ImportOpcUaDialog.xaml.cs

@@ -10,16 +10,10 @@ namespace DMS.WPF.Views.Dialogs;
 /// </summary>
 public partial class ImportOpcUaDialog : ContentDialog
 {
-    public ImportOpcUaDialogViewModel ViewModel
-    {
-        get => (ImportOpcUaDialogViewModel)DataContext;
-        set => DataContext = value;
-    }
 
-    public ImportOpcUaDialog(ImportOpcUaDialogViewModel viewModel)
+    public ImportOpcUaDialog()
     {
         InitializeComponent();
-        ViewModel = viewModel;
     }
 
     private void ContentDialog_PrimaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)