c# - C#如何调用串口收到的数据

Question

我是 C# 串口新手...

我有一个虚拟串口驱动程序并尝试这个代码...

 private string strPortData = null;

    private void okButton_Click(object sender, EventArgs e)
    {
                if (!serialPort1.IsOpen)
                {
                    serialPort1.Open();
                }

                string strPortData= "CMD1";

                serialPort1.WriteLine(strPortData);

    }

    private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        textBox1.Text = serialPort1.ReadLine();
    }

但不要调用serialPort1_DataReceived。

调用 DataReceived 时我应该做什么？

Answer 1

尝试使用类似于以下的代码创建一个新的控制台应用程序

void Main()
{
    using (SerialPort serialPort1 = new SerialPort("COM1"))
    using (SerialPort serialPort2 = new SerialPort("COM2"))
    {
        serialPort1.DataReceived += (sender, args) => {
            Console.WriteLine("COM1 Received: " + serialPort1.ReadLine());
        };

        serialPort2.DataReceived += (sender, args) => {
            Console.WriteLine("COM2 Received: " + serialPort2.ReadLine());
        };

        serialPort1.Open();
        serialPort2.Open();

        serialPort1.WriteLine("Hello, COM2!");

        Thread.Sleep(200);
    }
}

上面的代码打开两个串口，设置数据接收事件，并通过它发送数据。如果运行该代码，您应该看到“COM2 Received: Hello, COM2!”输出。