为了您的目的，我会丢弃您在网上某处找到的代码并查看本文。

C＃中的串口通信初学者 [ ^ ]



因为你有一个USB转RS232转换器，它将枚举为一个或多个虚拟COM端口（VCP）。

在大多数情况下这与连接物理串口相同。



开始与设备通信的方法是通过类SerialPort [ ^ ]。您也可以在那里找到一些入门示例。

For your purpose I would discard the code you found "somewhere on the net" and take a look at this article.
Serial Comms in C# for Beginners[^]

As you have a USB to RS232 converter it will enumerate as one or more Virtual COM Ports (VCP).
In most ways this is the same as connecting to a physical serial port.

The way to start communicating with your device is via the class SerialPort[^]. You can find some starter examples there too.