使用MSCOMM32在使用INPUT时报异常是怎么回事异常来自 HRESULT:0x800A1F54
private void MSComm1_OnComm(object sender, EventArgs e)
        {
          //  bool op =MSComm1.PortOpen;
            if (MSComm1.CommEvent == 2)
            {
                        object result = MSComm1.Input;                
                //textBox1.Text = 
                MSComm1.InBufferCount = 0;
            }
        }