NET exploder flat defined a kind of CLS and unified programming class libraries and provided a communication standard of next generation network and XML. In this part, the article analysis several main composing parts of .

• NET开发平台定义了一种公用语言子集(CLS)并统一了编程类库，提供了对下一代网络的通信标准和可扩展标记语言(XML)，其中分析了.