问在多个应用程序之间共享单个资源(串行端口)

EN

    Object _access = new Object();
    SerialPort _port;

    public void Open()
    {
        lock( _port )
        {
            if( _port == null )
            {
                _port = new SerialPort("COM1", 9600, Parity.None, 8,StopBits.One );
                _port.Open();
                _port.NewLine = "\r";
            }
        }
    }

    public void Close()
    {
       // TBD
    }

    public string SendAndRecieve( string cmd )
    {
        String response;

        lock( _access )
        {
            // Assume port is already opened
            _port.WriteLine(cmd);
            response = _port.ReadLine();
        }

        return response;
    }