Monday 6 March 2017

Design principles of Dot Net

Interoperability
Since PC frameworks usually require cooperation amongst more up to date and more seasoned applications, .NET Framework gives intends to get to capacities actualized in more up to date and more established projects that execute outside .NET condition. Access to Component Object Model (COM) segments is given in System.Runtime.InteropServicesand System.EnterpriseServices namespaces of the structure.COM is a Binary Interface. This makes COM interfaces alluring for question situated C++ libraries that are to be utilized by customers ordered utilizing distinctive compiler variants.


Portability

While Microsoft has never executed the full structure on any framework with the exception of Microsoft Windows, it has built the system to be cross-platform,and usage are accessible for other working frameworks (see Silverlight and § Alternative usage). Microsoft presented the particulars for CLI (which incorporates the center class libraries, CTS, and CIL), and C++/CLI to both Ecma International (ECMA) and International Organization for Standardization (ISO), making them accessible as official models. This makes it feasible for outsiders to make perfect executions of the system and its dialects on different stages.

Security

.NET Framework has its own particular security component with two general elements: Code Access Security (CAS), and approval and confirmation. CAS depends on confirmation that is related with a particular get together. Normally the confirmation is the wellspring of the get together (regardless of whether it is introduced on the neighborhood machine or has been downloaded from the Internet). CAS utilizes confirmation to decide the authorizations allowed to the code. Other code can request that calling code be conceded a predetermined authorization. The request causes CLR to play out a call stack walk: each gathering of every strategy in the call stack is checked for the required consent; if any get together is not conceded the authorization a security special case is tossed.
Language autonomy
.NET Framework presents a Common Type System (CTS) that characterizes every conceivable dat sorts and programming builds bolstered by CLR and how they might communicate with each other fitting in with CLI determination. On account of this element, .NET Framework bolsters the trading of sorts and protest examples amongst libraries and applications composed utilizing any accommodating .NET language.
Type safety
CTS and the CLR used in .NET Framework also enforce type safety. This prevents ill-defined casts, wrong method invocations, and memory size issues when accessing an object. This also makes most CLI languages statically typed (with or without type inference). However, starting with .NET Framework 4.0, the Dynamic Language Runtime extended the CLR, allowing dynamically typed languages to be implemented atop the CLI.

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