添加页面

ViewModels/MainViewModel.cs

@@ -65,7 +65,13 @@ namespace TabletTester2025.ViewModels
             OpenCalibrationCommand = new AsyncRelayCommand(() => { MessageBox.Show("校准功能待实现"); return Task.CompletedTask; });
 
             // 跳转到 PlcDataPage 页面
-            ShowDataCommand = new AsyncRelayCommand(() => { new ShowData().ShowDialog(); return Task.CompletedTask; });
+
+            ShowDataCommand = new AsyncRelayCommand(async () =>
+            {
+                // 用你项目里已有的PLC实例（假设叫 _plcClient）
+                var window = new ShowData(_plc);
+                window.ShowDialog();
+            });
         }
 
         private async Task ConnectToPlc()