添加电子称程序

定义一个委托：

delegate void ElectronicScales(string str);

ElectronicScales strc;

在初始化电子称：

       #region 电子称设置

        public void Electronic()

        {

            //初始化窗口程序接受电子秤信息

            try

            {

                serialPort1.PortName = "COM3";

                switch (Share.GetCompanyId())

                {

                    case 1:

                        serialPort1.BaudRate = 1200;

                        break;

                    default:

                        serialPort1.BaudRate = 2400;

                        break;

                }



                strc = new ElectronicScales(UpdateTextBox);

                serialPort1.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(serialPort1_DataReceived);

                serialPort1.Close();



                serialPort1.Open();

            }

            catch

            {

            }

        }



        private void UpdateTextBox(string weight)

        {

            TrueWeight = int.Parse(weight);   //TrueWeight界面文本框

        }



        private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)

        {

            try

            {

                var strweight = "";

                Thread.Sleep(200);



                string com = serialPort1.ReadExisting();



                char[] ch = com.Substring(com.IndexOf("=") + 1, 6).ToCharArray();

                Array.Reverse(ch);

                strweight = Convert.ToInt32(new string(ch)).ToString();



                this.Invoke(strc, new string[] { strweight });

            }

            catch

            {



            }

        }



        #endregion

COM3是端口号，需要把带你呢的端口号设置成COM3