DDAB, .NET FRAMEWORK

8/3/2019 DDAB, .NET FRAMEWORK

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Microsoft

.NET Framework

Presented by: Manohar Prasad,

Specialization: IB+IT,

Roll No.- 1999/01030003



What is .NET ?What is .NET ?

.NET is a platform that provides astandardized set of services.

It’s just like Windows, except distributed

over the Internet.

It exports a common interface so that it’sprograms can be run on any system that

supports .NET. A specific software framework

Includes a common runtime

.NET is a platform that provides astandardized set of services.

It’s just like Windows, except distributed

over the Internet.

It exports a common interface so that it’sprograms can be run on any system that

supports .NET. A specific software framework

Includes a common runtime

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Event-Driven Programming

Event-driven programming means makingsome action to perform (through some

program/code) on the occurrence of events.

In this programming, programmer doesnot specify how to create objects, how toplace them on screen and how to changetheir properties etc. He simply writes thecode to handle events.



.NET Framework .NET Framework

Programming model for .NET

Platform for running .NET managedcode in a virtual machine

Provides a very good environment todevelop networked applications andWeb Services

Provides programming API and unifiedlanguage-independent developmentframework

Programming model for .NET

Platform for running .NET managedcode in a virtual machine

Provides a very good environment todevelop networked applications andWeb Services

Provides programming API and unifiedlanguage-independent developmentframework




The Core of .NET Framework:

FCL & CLR

Common Language Runtime

Garbage collection

Language integration

Multiple versioning support(no more DLL hell!)

Integrated security

Framework Class LibraryProvides the core functionality:

ASP.NET, Web Services, ADO.NET,

Windows Forms, IO, XML, etc.05/04/12 5www.manoharprasad.wordpress.com



.NET Framework

Visual Studio .NET

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

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

ADO .NETADO .NET

ASP .NETASP .NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet Toolkit Mobile Internet Toolkit

WindowsWindows

FormsForms

Common Language SpecificationCommon Language Specification

C++C++ C#C# VBVB PerlPerl J#J# ……

V i s u al S t u d i o

.NE T

V i s u al S t u d i o

.NE T




Common Language RuntimeCommon Language Runtime

Manages running code – like a virtualmachine

ThreadingMemory management

No interpreter: JIT-compiler produces nativecode – during the program installation or atrun time

Manages running code – like a virtualmachine

ThreadingMemory management

No interpreter: JIT-compiler produces nativecode – during the program installation or atrun time




Automatic Memory Management

The CLR manages memory for managed code All allocations of objects and buffers made from aManaged Heap

Unused objects and buffers are cleaned up

automatically through Garbage Collection




Multiple Language Support

IL (MSIL or CIL) – Intermediate LanguageIL (MSIL or CIL) – Intermediate Language

It is low-level (machine) language, likeIt is low-level (machine) language, like

Assembler, but is Object-orientedAssembler, but is Object-oriented

CTS is a rich type system built into the CLRCTS is a rich type system built into the CLR Implements various types (Implements various types (intint, float, string, …), float, string, …)

And operations on those typesAnd operations on those types

CLS is a set of specifications that allCLS is a set of specifications that alllanguages and libraries need to followlanguages and libraries need to follow

This will ensure interoperability betweenThis will ensure interoperability betweenlanguageslanguages




Intermediate Language

.NET languages are compiled to anIntermediate Language (IL)

IL is also known as MSIL or CIL

CLR compiles IL in just-in-time (JIT)manner – each function is compiled

just before execution

The JIT code stays in memory forsubsequent calls




Common Type System (CTS)

All .NET languages have the same primitive datatypes. An int in C# is the same as an int in

VB.NETWhen communicating between modules written

in any .NET language, the types are guaranteedto be compatible on the binary level




Common Language Specification

Any language that conforms to the CLS isa .NET language

A language that conforms to the CLS hasthe ability to take full advantage of theFramework Class Library (FCL)





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