C#中的串口读写

问题描述：做项目时用到了串口读写，将扫码枪的数据显示到界面上。虽然很简单，但对于编程瓜皮的我，还是记录下来，方便以后学习。。。

public class 

{

     public static SerialPort serialPort = null;

public delegate void showScanerTrayNumEventHandler();
 public static event showScanerTrayNumEventHandler showScanerTrayNum;

     

 public void StartScanerWork()
        {
            serialPort = new SerialPort();

            serialPort.PortName = globModelData.configmodelData.ScanerPortParam.PortName;
            serialPort.BaudRate = Convert.ToInt32(globModelData.configmodelData.ScanerPortParam.BaudRate);
            serialPort.Parity = Parity.None;
            serialPort.DataBits = Convert.ToInt32(globModelData.configmodelData.ScanerPortParam.DataBits);
            serialPort.StopBits = StopBits.One;
            serialPort.ReadTimeout = 3000;//单位毫秒
            serialPort.WriteTimeout = 3000;//单位毫秒

            //设置串口字节接收缓冲值，通常为1
            //获得接收后，触发事件处理
            serialPort.ReceivedBytesThreshold = 1;
            serialPort.DataReceived += new SerialDataReceivedEventHandler(ShowScanerResult);

            try
            {
                serialPort.Open();
                //Console.WriteLine(serialPort.IsOpen.ToString());

            }
            catch (Exception ex)
            {
                MessageBox.Show("串口打开失败" + ex.ToString());
                System.Environment.Exit(0);//退出应用程序
            }

        }

 public void ShowScanerResult(Object sender, SerialDataReceivedEventArgs e)
        {
            Thread.Sleep(50);
            int len = serialPort.BytesToRead;
            Byte[] readBuffer = new Byte[len];
           
            serialPort.Read(readBuffer, 0, len); //将数据读入缓存
            //Thread.Sleep(1000);
            //处理readBuffer中的数据，自定义处理过程
            globModelData.trayNum = System.Text.Encoding.Default.GetString(readBuffer);
           
            Console.WriteLine(globModelData.trayNum);
           
            if(showScanerTrayNum != null)
            {

//触发事件
                showScanerTrayNum();
            }
        }

}