System Namespace

Provides fundamental classes and base types that define value types, reference types, exceptions, and the processor for the common language runtime (CLR). It also includes types that support serialization, runtime environment interaction, and fundamental types used throughout the .NET Framework.

Classes

  • ObjectThe root of all classes in the .NET Framework hierarchy.
  • StringRepresents text as a sequence of code points.
  • Int32Represents a 32-bit signed integer.
  • BooleanRepresents a logical value (true or false).
  • DateTimeRepresents an instant in time, typically expressed as a date and time of day.
  • ExceptionThe base class for all exceptions.
  • ConsoleProvides access to the standard input, output, and error streams for console applications.
  • MathProvides fundamental mathematical operations.
  • UriRepresents a Uniform Resource Identifier (URI) reference.
  • EnvironmentProvides information about, and means of manipulating, the current environment and platform.

Interfaces

  • ICloneableSupports a simple cloning model.
  • IDisposableProvides a mechanism for releasing unmanaged resources.
  • IEnumerableSupports iteration over a collection.
  • IComparableSupports comparison of the current instance with another object of the same type.

Enumerations