说明：  笔者用C#写了一组类实现自己的CMPP SP端程序（CMPPClient）。为了实现相关类，还需要编写一些辅助类，并且首先要解决CMPP协议的数据结构同C#的数据之间的转换问题。
(I wrote a set of classes with C# to implement my own CMPP SP terminal program (CMPPClient). In order to implement the related classes, we need to write some auxiliary classes, and first of all, we need to solve the conversion problem between the data structure of CMPP protocol and the data of C #.)