添加S7后台服务和添加PLC所需要的属性

ViewModels/Dialogs/DeviceDialogViewModel.cs

@@ -1,6 +1,7 @@
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using PMSWPF.Models;
+using S7.Net; // Add this using directive
 
 namespace PMSWPF.ViewModels.Dialogs;
 
@@ -8,6 +9,13 @@ public partial class DeviceDialogViewModel : ObservableObject
 {
     [ObservableProperty]
     private Device _device;
+    partial void OnDeviceChanged(Device value)
+    {
+        if (value != null)
+        {
+            System.Diagnostics.Debug.WriteLine($"Device ProtocolType changed to: {value.ProtocolType}");
+        }
+    }
     
     [ObservableProperty] private string title ;
     [ObservableProperty] private string primaryButContent ;
@@ -17,6 +25,9 @@ public partial class DeviceDialogViewModel : ObservableObject
         _device = device;
     }
 
+    // Add a property to expose CpuType enum values for ComboBox
+    public Array CpuTypes => Enum.GetValues(typeof(CpuType));
+
 
     [RelayCommand]
     public void AddDevice()