System namespace

System namespace contain:
- fundamental classes
- base classes

fundamental classes and base classes contain:
- value datatypes
- reference datatypes
- events
- event handlers
- interfaces
- attributes
- processing exceptions

System.collections
System.componentmodel
System.Composition
System.diagnostics
System.dynamic
System.globalization
System.IO
System.linq
System.net
System.Numerics
System.Reflection
System.Resources
System.Runtime
System.Security
System.Servicemodel
System.text
System.threading
System.Windows.Input
System.XML
Windows namespace
Language and Compiler