Dot Net Framework ion

8/9/2019 Dot Net Framework ion

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FRAMEWORK


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OUR GROUP

Arvind Vishwakarma Amit Dwivedi

Kirti Chadda

Tanu Sharma

Kapil Sharma


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o what is.NET?.Net is a platform that provides a standardized

set of services.

vIts just like Windows, except distributed over the Internet.

vIt exports a common interface so that its program can be run on anysystem that supports .NET.

A specific software framework

vIncludes a common runtime


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. ET FrameworkProgramming model for .NET

Platform for running .NET managed code in a virtual machine

Provides a very good environment to develop networked applicationsand Web Services

Provides programming API and unified language-independentdevelopment framework


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The Core of .NET Framework

Common Language Runtime

vGarbage collection

vLanguage integrationvIntegrated security

Framework Class Libraryv

vProvides the core functionality:

ASP.NET, Web Services, ADO.NET, Windows Forms,IOXML,etc

v


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Common Language Runtime

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

Memory management, thread management,etc

Convert the .NET Managed Code to native code

Controls the interaction with the Operating Syste.


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Framework Class Library



Object-oriented collection of reusable types

Collections, I/O, Strings,

.NET Framework (Base Class Library).NET Framework (Base Class Library)


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Data Access Layer



Access relational databases

Data model

Work with XML


ADO .NET and XMLADO .NET and XML


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ASP.NET and Windows Forms



Create applications frond-end Web-based user interface, Windows GUI,Web services,



ASP .NETASP .NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms


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Programming Languages



Use your favourite language



ASP .NETASP .NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit


C++C++ C#C#VB.VB.NETNET

PerlPerl J#J#


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Visual Studio.NET





ASP .NETASP .NETWeb Forms Web ServicesWeb Forms Web ServicesMobile Internet ToolkitMobile Internet Toolkit


C++C++ C#C#VB.VB.NETNET

PerlPerl J#J# VisualStudio.NET

Vi

sualStudio.NET


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ommon Language InfrastructureDefines an environment that allows multiple high-level languages

to be used on different computer platforms without being re-writtenfor specific architectures.

Four Aspects:Common Type SystemMetadataCommon Language SpecificationVirtual Execution System


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ative CodeOperating System-independent

Also known as Managed Code, that is, the languages functionality ismanaged by the .NET Framework.


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ommon Type SystemSet oftypes and operations that are shared by all CTS-compliant

programming languages.

Defines how types are declared, used, and managed in the runtime,

and is also an important part of the runtimes support for cross-language integration.


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( )ust In Time JIT CompilerConverts the Microsoft Intermediate Language (MSIL) code into native

code to the Operating System (OS).

Works based on the architecture of the OS.

(same Microsoft Intermediate Language (MSIL) can be executed ondifferent Operating Systems without rewriting the source code. )


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AssemblyA logical collection of one or more exe and dll file containing an applications

code and resources.

.NET assemblies contain code in CIL(Common Intermediate Language), which

is usually generated from .NET languages, and then compiled into machinelanguage at runtime by the CLR just-in-time compiler.

An assembly can consist of one or more files. Code files are called modules.


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ow CLI works?.NET Compatible Language

Independent Compilation

Convert Compile Source to CIL(through JIT)

Convert CIL to machine code

This is machine code


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.ow NET Works?Microsoft .NET languages Source Code are compiled

1.Microsoft Intermediate Language (MSIL)2.Metadata (stored in Manifest file)

Common Language Runtime (CLR) uses metadata to locate and load classes,generate native code, provide security, and execute Managed Code.


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.ow NET Works?Source code

.NETCompiler

MSIL

--------Metadata

CLR

---[JIT]

OUTPUT


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ode Access SecurityMost software comes from web. A user doesnt know whether a Web code

is safe or not.

.NET allows an administrator to specify privileges that each managed codehas.

You can specify these privileges in three level by modifying XML-based filesvEnterprisevMachinevUser


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