C # is an object-oriented high-level programming language that runs on. NET Framework. It inherits the powerful functions of C and C ++ while removing some of their complex features (for example, without macros and templates, multiple inheritance is not allowed ). . Net is a new platform, not a programming method, or a programming language. In general, the. net framework (. net framework) mainly includes:. net class library and CLR. The. net Class Library provides you with a wide range of classes. Of course, these classes are encapsulated and can be used directly. Different classes have different functions. CLR (Common Language Runtime) is the basis for implementing program running. Any language targeted at CLR will eventually run in an orderly manner under the managed CLR. As long as the language is targeted at CLR, it will eventually be compiled into MSIL (an intermediate language). Therefore, this allows mutual operations between different languages (the premise is that the language has a CLR compiler ). I learned the C # programming language. Like VB and C ++, I have the same basic things. I want to use the process control language, data type, constant variable, and so on. In this way, we often learn the basics of VB, consolidate the basic knowledge, and expand new knowledge, so that our learning is more efficient and close!