asp.net - 如何在silverlight应用程序中获取所有串口com

Question

我有 vs 2012，我想要 2 获取计算机的所有串行端口，为此我编写了代码

  //  com = AutomationFactory.CreateObject("ComInterOp_SeeLevel828_Utility");
           com = AutomationFactory.GetObject("InteropComObjects.IO.Ports.SerialPort");
            dynamic count = com.GetDeviceCount();
            StringBuilder sb = new StringBuilder();

            List<dynamic> devices = new List<dynamic>();
            for (int i = 1; i <= 9; i++)
            {
                devices.Add("COM" + i);
            }

            for (int i = 0; i < count; i++)
            {
                devices.Add(com.GetDevice(i));

            }
            cmdSerial.ItemsSource = devices;

但我在这条线上遇到了错误

com = AutomationFactory.GetObject("InteropComObjects.IO.Ports.SerialPort"); 

因为没有找到为指定 ProgID 注册的对象。