控制台刷新优化

SSPCTester.UI/App.xaml.cs

@@ -180,7 +180,10 @@ public partial class App : Application
         services.AddTransient<HomeViewModel>();
         services.AddTransient<ProjectInfoViewModel>();
         services.AddTransient<TestHostViewModel>();
-        services.AddTransient<ExperimentConsoleViewModel>();
+        // The experiment console controls application-wide hardware and is not
+        // owned by a project. Keep one instance so switching project pages does
+        // not replace its state or interrupt its refresh loop.
+        services.AddSingleton<ExperimentConsoleViewModel>();
         services.AddTransient<BasicTestViewModel>();
         services.AddTransient<CurveTestViewModel>();
         services.AddTransient<PowerTestViewModel>();

SSPCTester.UI/ViewModels/ExperimentConsoleViewModel.cs

@@ -17,6 +17,7 @@ public partial class ExperimentConsoleViewModel : ObservableObject
     private readonly UserSettingsStore _settingsStore;
     private readonly UiLogSink _log;
     private readonly object _pollLock = new();
+    private readonly HashSet<object> _activeHosts = new(ReferenceEqualityComparer.Instance);
     private CancellationTokenSource? _pollCts;
     private Task? _pollTask;
 
@@ -113,13 +114,25 @@ public partial class ExperimentConsoleViewModel : ObservableObject
         LoadCurrentSetpoint = value.Current;
     }
 
-    public void SetActive(bool active)
+    public void SetActive(object host, bool active)
+    {
+        ArgumentNullException.ThrowIfNull(host);
+
+        lock (_pollLock)
         {
             if (active)
+            {
+                _activeHosts.Add(host);
                 StartPolling();
+            }
             else
+            {
+                _activeHosts.Remove(host);
+                if (_activeHosts.Count == 0)
                     StopPolling();
             }
+        }
+    }
 
     [RelayCommand]
     private async Task ApplyPower()

SSPCTester.UI/ViewModels/TestHostViewModel.cs

@@ -49,6 +49,9 @@ public partial class TestHostViewModel : ObservableObject
 
     private void UpdateConsoleActive()
     {
-        Console.SetActive(_isViewActive && SelectedTabIndex == 0);
+        // Identify this host when acquiring/releasing console polling. During a
+        // project switch WPF can load the new host before unloading the old one;
+        // the old host must not stop the shared console on behalf of the new host.
+        Console.SetActive(this, _isViewActive && SelectedTabIndex == 0);
     }
 }