private void Thread1()
        {
            string str;

            str = Ini.Read("config", "com1");
            try
            {
                if (str != "null")
                {
                    textBox3.Text        = str;
                    serialPort2.PortName = "COM" + Ini.Read("config", "com1");
                    serialPort2.Open();
                }
                else
                {
                    MessageBox.Show("串口未配置!");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(string.Format("COM{0}打开失败!", str));
            }
        }
        private void open()
        {
            string str;

            str = Ini.Read("config", "com");
            try
            {
                if (str != "null")
                {
                    textBoxCom.Text      = str;
                    serialPort1.PortName = "COM" + Ini.Read("config", "com");
                    serialPort1.Open();
                }
                else
                {
                    MessageBox.Show("串口未配置!");
                }
            }
            catch
            {
                MessageBox.Show(string.Format("COM{0}打开失败!", str));
            }
        }