如何在C#中使用SerialPort端口对象的dataReceived事件？

using System.IO.Ports;

SerialPort serialPort = new SerialPort("COM1", 9600);

serialPort.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);

private static void DataReceivedHandler(object sender, SerialDataReceivedEventArgs e)
{
    SerialPort sp = (SerialPort)sender;
    string indata = sp.ReadExisting();
    Console.WriteLine("接收到的数据: " + indata);
}

serialPort.Open();

using System;
using System.IO.Ports;

class SerialPortExample
{
    static void Main()
    {
        SerialPort serialPort = new SerialPort("COM1", 9600);
        serialPort.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);
        serialPort.Open();
        Console.WriteLine("按任意键退出...");
        Console.ReadKey();
        serialPort.Close();
    }

    private static void DataReceivedHandler(object sender, SerialDataReceivedEventArgs e)
    {
        SerialPort sp = (SerialPort)sender;
        string indata = sp.ReadExisting();
        Console.WriteLine("接收到的数据: " + indata);
    }
}