U:修改PLC监听数据不会更新BUG

src/Sharp/Client/ViewModels/PlcViewModel.cs

@@ -50,7 +50,7 @@ public class PlcViewModel : ViewModelBase
         ReadCommand = new AsyncCommand(ReadAsync);
         WriteCommand = new AsyncCommand(WriteAsync);
         AddMonitorCommand = new RelayCommand(AddMonitor);
-        RemoveMonitorCommand = new RelayCommand<PlcTag>(RemoveMonitor, tag => tag != null);
+        RemoveMonitorCommand = new RelayCommand<PlcTagViewModel>(RemoveMonitor, tag => tag != null);
     }
 
     #region Properties
@@ -120,7 +120,7 @@ public class PlcViewModel : ViewModelBase
     // 数据源
     public ObservableCollection<PlcBrand> Brands { get; } = new(Enum.GetValues<PlcBrand>());
     public ObservableCollection<CpuType> CpuTypes { get; } = new(Enum.GetValues<CpuType>());
-    public ObservableCollection<PlcTag> MonitoredTags { get; } = new();
+    public ObservableCollection<PlcTagViewModel> MonitoredTags { get; } = new();
 
     #endregion
 
@@ -206,15 +206,18 @@ public class PlcViewModel : ViewModelBase
         var tag = new PlcTag
         {
             Address = MonitorAddress,
-            DataType = typeof(short),
-            OnChanged = (t, v) =>
+            DataType = typeof(short)
+        };
+
+        var vm = new PlcTagViewModel(tag);
+
+        tag.OnChanged = (t, v) =>
+        {
+            // 使用Dispatcher在UI线程更新值，避免跨线程访问异常
+            _dispatcher.InvokeAsync(() =>
             {
-                // 使用Dispatcher在UI线程更新值，避免跨线程访问异常
-                _dispatcher.InvokeAsync(() =>
-                {
-                    t.Value = v;
-                });
-            }
+                vm.UpdateValue();
+            });
         };
 
         _plcService.Subscribe(tag);
@@ -222,21 +225,21 @@ public class PlcViewModel : ViewModelBase
         // 在UI线程添加到集合
         _dispatcher.InvokeAsync(() =>
         {
-            MonitoredTags.Add(tag);
+            MonitoredTags.Add(vm);
         });
     }
 
-    private void RemoveMonitor(PlcTag? tag)
+    private void RemoveMonitor(PlcTagViewModel? tagVm)
     {
-        if (tag == null) return;
+        if (tagVm == null) return;
 
         // 从PLC服务取消订阅
-        _plcService.Unsubscribe(tag.Id);
+        _plcService.Unsubscribe(tagVm.Id);
 
         // 从UI集合移除
         _dispatcher.InvokeAsync(() =>
         {
-            MonitoredTags.Remove(tag);
+            MonitoredTags.Remove(tagVm);
         });
     }
 }

src/Sharp/Plc/Services/PlcMonitorService.cs

@@ -73,6 +73,16 @@ public class PlcMonitorService : IPlcService, IDisposable
             {
                 _logger?.LogDebug("Monitor task cancelled successfully");
             }
+            finally
+            {
+                _monitorTask = null;
+            }
+        }
+
+        if (_cts != null)
+        {
+            _cts.Dispose();
+            _cts = null;
         }
 
         await _driver.DisconnectAsync();