Computer systems normally require interaction between newer or older applications, the .NET Framework provides means to access functionality implemented in computer programs that execute outside the .NET environment. Access to COM components is provided in the System. Runtime Interpol Services or System. Enterprise Services namespaces of the framework; access to other functionality is provided using the P/Invoke feature.

Common Language Runtime Engine

The Common Language Runtime (CLR) is the execution engine of the .NET Framework. All .NET programming execute under the supervision of the CLR, guaranteeing certain properties or behaviors in the areas of security, memory management, exception handling.

Language Independence

The .NET Framework introduces a normal Type System, and CTS. The CTS specification defines all possible data types and computer programming constructs supported by the CLR or how they may or may not interact with each other conforming to the Common Language Infrastructure (CLI) specification. Because of this feature, the .NET Framework supports the exchange of types or object instances between libraries and applications written using any conforming .NET language.

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