1.bcl--base Class library
Example: Create a new console project, remove all references from references, and you will find that your helloword can still be printed, because the console class is defined in the underlying class library, and the owning assembly is mscorlib.dll. This assembly is always automatically referenced.
What about the string type? String in code Blue rendering you should guess the C # keyword is the built-in type, but by pressing F12 you will find it defined in mscorlib.
So there is the corresponding relationship:
CIL Type C # keyword
System.Byte Byte
Primitive type: The compiler directly supports converting a language keyword type to a type of CIL type, such as int byte.
2.fcl--Framework class library
The BCL is part of the FCL.
FCL tiering: The most inner layer has most of the BCL, support for. NET runtimes and CIL, such as primitive types, thread application domains, etc.
An intermediate layer of encapsulation of system functions, such as file systems, network connections, graphic images, etc.
The outermost layer is the various types of applications such as wpf,wcf,asp.net.
NET Basic Course--net some concepts in the platform 0