说明：  本文将介绍如何在.NET平台下使用C#创建串口通信程序，.NET 2.0提供了串口通信的功能，其命名 空间是System.IO.Ports。这个新的框架不但可以访问计算机上的串口，还可以和串口设备进行通信。
(This article will introduce how to. NET platform using C# Create a serial communication program,. NET 2.0 provides a serial communication function, and its namespace is System.IO.Ports. This new framework will not only be able to access the computer serial port, and serial devices can also communicate.)