ASP. NET namespace

System: Root Space, including some basic class libraries

System. Collections: Class Libraries related to collection classes
System. Collections. Generic: class library space of the generic set
System. Data: Data Processing class library space
System. Data. ODBC: the space for connecting to the database using ODBC
System. Data. oracleclient: connects to the class library space of oracle.
System. Diagnostics: Mainly used for applicationsProgramDiagnosis
System. Drawing: Space mainly used for vomit
System. Drawing. drawing2d: Class Library focusing on 2D drawing
System. Drawing. Printing: class library mainly used for drawing Printing
System. Environment: Class Library for getting heartache parameter information
System. IO: input/output class library
System. Io. Compression: class library responsible for input/output compression and decompression
System. Io. Ports: port-related Class Libraries
System. Net: network application library
System. Reflection: class library related to reflection
System. runtime. interopservices: class library space for inter-call during runtime
System. runtime. remoting: class library space called remotely
System. Security: security-related class library space
System. Threading: the class library space related to the thread
System. Web: web-related library space
Syetem. Windows. Forms: class library space related to the form
System. xml: class library space related to XML File Processing