串行端口数据接收事件在表单的单独类中

本文关键字：表单 单独类 事件 数据 串行端口 | 更新日期: 2023-09-27 18:00:28

我使用windows应用程序窗体从串行端口接收数据。在窗体内，我可以引发SerialportDataReceived事件。但我想要的是将串行端口事件放在一个单独的类中，并将数据返回到表单中

以下是包含串行端口接收数据的eventhandler的类：

class SerialPortEvent
{
    public void mySerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        try
        {
            SerialPort sp = new SerialPort();
            //no. of data at the port
            int ByteToRead = sp.BytesToRead;
            //create array to store buffer data
            byte[] inputData = new byte[ByteToRead];
            //read the data and store
            sp.Read(inputData, 0, ByteToRead);
        }
        catch (SystemException ex)
        {
            MessageBox.Show(ex.Message, "Data Received Event");
        }

    }
}

收到数据时，如何将此类链接到表单？我必须在主程序中还是在表单中提出事件？

我现在调用的方式主要如下：

    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1());
        SerialPort mySerialPort = new SerialPort("COM81");
        SerialPortEvent ReceivedData = new SerialPortEvent();
        mySerialPort.DataReceived += new SerialDataReceivedEventHandler(ReceivedData.mySerialPort_DataReceived);
        myserialPort.open();
    }

串行端口接收事件没有接收到任何内容。

我做错了什么吗？

串行端口数据接收事件在表单的单独类中

让另一个类为表单定义自己的事件，以便处理该事件，该事件可以为表单提供读取的字节：

class SerialPortEvent
{
    private SerialPort mySerialPort;
    public Action<byte[]> DataReceived;
    //Created the actual serial port in the constructor here, 
    //as it makes more sense than having the caller need to do it.
    //you'll also need access to it in the event handler to read the data
    public SerialPortEvent()
    {
        mySerialPort = new SerialPort("COM81");
        mySerialPort.DataReceived += mySerialPort_DataReceived
        myserialPort.open();
    }
    public void mySerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
        try
        {
            //no. of data at the port
            int ByteToRead = mySerialPort.BytesToRead;
            //create array to store buffer data
            byte[] inputData = new byte[ByteToRead];
            //read the data and store
            mySerialPort.Read(inputData, 0, ByteToRead);
            var copy = DataReceived;
            if(copy != null) copy(inputData);
        }
        catch (SystemException ex)
        {
            MessageBox.Show(ex.Message, "Data Received Event");
        }
    }
}

接下来，您不希望在Main中创建SerialPortEvent实例，而是希望在主窗体的构造函数或加载事件中创建它：

public Form1()
{
    SerialPortEvent serialPortEvent = new SerialPortEvent();
    serialPortEvent.DataReceived += ProcessData;
}
private void ProcessData(byte[] data)
{
    //TODO do stuff with data
}
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