C # Study Notes (September April 1)

Web Service: A Web Site is used as a set of APIS (Application Pragramming Interface). We call it "Pragrammable Web ". Once the foundation of "Pragrammable Web" is established, various services can be easily provided on the Internet. We call this Web Service provided through the "Pragrammable Web" mechanism as "Web Service ".

To achieve the "Pragrammable Web" goal, each website must first define consistent data formats and communication protocols. Currently, the most popular and widely used standard data exchange format is XML, which uses Simple Object Access Protocol (SOAP) as the communication Protocol.

. NET Framework: it is a Common Language Runtime environment and provides a set of function libraries to help programmers process system communication details.

. NET Framework includes:

Common Language Runtime)
U function library
U Programming Language
U Visual Studio. NET

Common Language Runtime: as long as it is a program developed in a Common Language Specification Language, it can be executed in any operating system with the Common Language Runtime (CLR, including Windows 95/98, CE, NT, 2000, and.. NET.

Intermediate Language: After you write the program code in the. NET Language, you can use the compiler provided by. NET to compile the program to generate an EXE or DLL file. However, the compiled program is not the Native Code that the CPU can execute immediately, but an Intermediate Language ). During execution, the CLR Class Loader loads the IL program code into the memory, and then compiles it into a program that can be executed on this platform in a timely manner.