AUCMA_SCADA/Aucma.Core.ScannerGun/ScannerGunService.cs

using System.IO.Ports;
using System.Timers;

namespace Aucma.Core.ScannerGun
{
    /// <summary>
    /// 扫码枪初始化
    /// </summary>
    public class ScannerGunService : IScannerGunService
    {
        public Task ScannerGunAsync()
        {
            //COM口初始化
            InstanceSerialPort("COM3");
            return Task.CompletedTask;
        }
        public void InstanceSerialPort(string portName)
        {
            //实例化串行端口
            SerialPort serialPort = new SerialPort();
            //端口名  注:因为使用的是USB转RS232 所以去设备管理器中查看一下虚拟com口的名字
            serialPort.PortName = portName;
            //波特率
            serialPort.BaudRate = 9600;
            //奇偶校验
            serialPort.Parity = Parity.None;
            //停止位
            serialPort.StopBits = StopBits.One;
            //数据位
            serialPort.DataBits = 8;
            //忽略null字节
            serialPort.DiscardNull = true;
            //接收事件
            serialPort.DataReceived += serialPort_DataReceived;
            //开启串口
            serialPort.Open();
        }
        /// <summary>
        /// 接收数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void serialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            try
            {
                //防止数据接收不完整 线程sleep(1000)
                System.Threading.Thread.Sleep(1000);
                SerialPort serialPort = (SerialPort)sender;

                //开启接收数据线程
                Thread threadReceiveSub = new Thread(new ParameterizedThreadStart(ReceiveData3));
                threadReceiveSub.Start(serialPort);
            }
            catch (Exception ex)
            {
                throw;
            }
        }

        private void ReceiveData3(object serialPortobj)
        {
            try
            {
                SerialPort serialPort = (SerialPort)serialPortobj;

                string code = serialPort.ReadExisting();
                if (string.IsNullOrEmpty(code))
                {
                 //   MessageBox.Show("未扫描到条码！", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }

           //     SetBarCodeState(code);
            }
            catch (Exception ex)
            {
                throw;
            }
        }
    }
}