. NET namespaces

System: Root space, containing some basic class libraries
System.Collections: primarily class libraries related to collection classes
System.Collections.Generic: Class-Library space for generic collections
System.Data: Data processing class library space
SYSTEM.DATA.ODBC: The space to connect to the database in ODBC
System.Data.OracleClient: Connecting Oracle's class library space
System.Diagnostics: Primarily for application diagnostics
System.Drawing: Mainly used for the room to vomit
System.Drawing.Drawing2D: A class library focused on 2D drawing
System.Drawing.Printing: The class library used primarily for drawing printing
System.Environment: Get heartache Parameter information class Library
System.IO: Input Output Class Library
System.IO.Compression: Responsible for the input and output compression decompression of the class library
System.IO.Ports: Port-related class libraries
System.Net: Network Application class Library
System.Reflection: Reflection-related class libraries
System.Runtime.InteropServices: Runtime calls Class library space on each other
System.Runtime.Remoting: Remote Call of class library space
System.Security: Security-related class library space
System.Threading: Thread-dependent class library space
System.Web:Web Related class library space
Syetem.Windows.Forms: Form-related class library space
System.Xml:XML file processing-related class library space

