MainWindow.xaml.cs

@@ -207,6 +207,7 @@ namespace ConductivityApp
             // txtSampleDensity.Text = "1800"; // 应由用户输入
         }
         string COM = ConfigurationManager.AppSettings["COM"];
+
         private void InitializeHardware()
         {
             try
@@ -590,7 +591,7 @@ namespace ConductivityApp
                 Thread.Sleep(1000); // 等待1秒
 
                 // 2. 重新初始化
-                string comPort = "COM6"; // 或从配置读取
+                string comPort = COM; // 或从配置读取
                 int baudRate = 9600;
 
                 _serialPort = new SerialPort(comPort, baudRate, Parity.None, 8, StopBits.One);