How to use SerialPort class more reliably

Question

I've been using the SerialPort class for a little while in an application that communicates with some external hardware that I've designed. During the debugging process of said hardware, I found a few things to be unreliable, and I recently stumbled across this which seems to be onto something.

I'm trying to implement this into my application, however I have two questions about receiving data...

So, in the article I linked, the author mentions that the DataReceived event is problematic, and shows a typical code sample of how it could be used...

port.DataReceived += port_DataReceived;

// (later, in DataReceived event)
try {
    byte [] buffer = new byte[port.BytesToRead];
    port.Read(buffer, 0, buffer.Length);
    raiseAppSerialDataEvent(buffer);
}
catch (IOException exc) {
    handleAppSerialError(exc);
}

And then what the author considers to be the correct method is shown...

byte[] buffer = new byte[blockLimit];
Action kickoffRead = null;

kickoffRead = delegate {
port.BaseStream.BeginRead(buffer, 0, buffer.Length, 
        delegate (IAsyncResult ar) {
            try {
                int actualLength = port.BaseStream.EndRead(ar);
                byte[] received = new byte[actualLength];
                Buffer.BlockCopy(buffer, 0, received, 0, actualLength);
                raiseAppSerialDataEvent(received);
            }
            catch (IOException exc) {
                handleAppSerialError(exc);
            }
            kickoffRead();
        }, null);
    };
    kickoffRead();

BaseStream.BeginRead我的问题围绕着;的使用 在我的班级中，应该将读取数据的内容放在哪里？我的第一个想法是在DataReceived事件中，就像在第一个示例中展示如何不使用该类一样，SerialPort作者在评论中提到了代码在DataReceived事件中，但是对于显示更好方法的示例，作者没有提及在哪里代码应该是这样我以为他还是指事件DataReceived，但是后来作者提到DataReceived事件本身有问题，所以...？这里的任何指导都会很棒，如果很明显的话，我们深表歉意！

如果我没有提到任何对试图回答这个问题的人有益的事情，那么请务必让我知道。预先感谢您的任何指导和/或反馈！

Answer 1

它是一个递归函数，因此您在打开端口后仅调用此代码一次，并且它将继续重复自身而不会阻止执行（或需要 DataReceived 事件处理程序）。