C# 扫码枪

 

 

 

/// <summary>
        /// 串口初始化
        /// </summary>
        private void OpenSerialPort()
        {

　　　//串口号、波特率、停止位 有好多，选择你适合你电脑的
            //串口号
            serialPort1.PortName = "COM1";
            //波特率
            serialPort1.BaudRate = "9600";
            //停止位
            serialPort1.StopBits = StopBits.One;

            //打开串口
            if (!serialPort1.IsOpen)
            {
                serialPort1.Open();
            }
        }

 

/// <summary>
        /// 扫描
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>

private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)//内置方法
        {
            //获得条码信息
            string SerialNum = "";
            //延时确保扫描完全---这个很重要，扫描时间太短会导致扫描信息不全
            System.Threading.Thread.Sleep(100);

            int count = serialPort1.BytesToRead;
            byte[] data = new byte[count];
            serialPort1.Read(data, 0, count);
            foreach (byte item in data)
            {
                SerialNum += Convert.ToChar(item);
            }

            if (this.InvokeRequired)
            {
                this.Invoke(new MethodInvoker(delegate
                {

　　　　　　　　//显示信息

label2.Text = code;

　　　　 }));

　　　  }

}