INTRODUCTION TO .NET FRAMEWORKINTRODUCTION TO .NET FRAMEWORK

RAJESH GUNUKULA

BYBY

What is Microsoft .NET?

• .NET represents an advanced new generation of software that will drive the Next Generation Internet. Its purpose is to make information available any time, any place, and on any device.

• Quick Definition– .NET is an initiative to integrate all Microsoft

products with the “Next Generation” web.

.NET Enterprise Vision

ERP & BillingCustomerService

Sales

UsersAny device,Any place,Any time

XML Web ServicesIntegrate business applications and processes

Back OfficeHeterogeneous application and server infrastructure

SchedulingAuthentication

Notification

.NET Framework.NET Framework• Programming model for .NET• Platform for running .NET managed

code in a virtual machine• Provides a very good environment to

develop networked applications and Web Services

• Provides programming API and unified language-independent development framework

• Programming model for .NET• Platform for running .NET managed

code in a virtual machine• Provides a very good environment to

develop networked applications and Web Services

• Provides programming API and unified language-independent development framework

.NET Framework.NET Framework Common Language RuntimeCommon Language Runtime

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

• CLR manages code execution at runtime– Memory management, thread

management, etc.

.NET Framework.NET Framework Base Class LibraryBase Class Library

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

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

– Object-oriented collection of reusable types

– Collections, I/O, Strings, …

.NET FrameworkNET Framework Data Access LayerData Access Layer

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

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

ADO .NET and XMLADO .NET and XML

– Access relational databases– Disconnected data model– Work with XML

.NET Framework.NET Framework ASP.NET & Windows FormsASP.NET & Windows Forms

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

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

ADO .NET and XMLADO .NET and XML

ASP .NETASP .NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

– Create application’s front-end – Web-based user interface, Windows GUI, Web services, …

.NET Framework.NET Framework Programming LanguagesProgramming Languages

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

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

ADO .NET and XMLADO .NET and XML

ASP .NETASP .NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

C++C++ C#C# VB.NETVB.NET PerlPerl J#J# ……

– Use your favorite language

.NET Framework Common Language Specification

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

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

ADO .NET and XMLADO .NET and XML

ASP .NETASP .NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

Common Language SpecificationCommon Language SpecificationC++C++ C#C# VBVB PerlPerl J#J# ……

.NET FrameworkNET Framework Visual Studio .NETVisual Studio .NET

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

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

ADO .NET and XMLADO .NET and XML

ASP .NETASP .NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

Common Language SpecificationCommon Language Specification

C++C++ C#C# VBVB PerlPerl J#J# ……

Visu

al S

tud

io .N

ET

Visu

al S

tud

io .N

ET

Common Language RuntimeCommon Language Runtime

Just In Time (JIT) COMPILERJust In Time (JIT) COMPILER

Exception ManagerException Manager Thread ManagerThread Manager

Security ManagerSecurity Manager

Garbage CollectorGarbage Collector

Class Class loaderloader Code ManagerCode Manager

Compilation in .NET

Code in VB.NET Code in C#Code in another .NET Language

VB.NET compiler C# compilerAppropriate

Compiler

IL(IntermediateLanguage) code

CLR just-in-timeexecution

Intermediate Language Intermediate Language (IL)(IL)

• .NET languages are not compiled to machine code. They are compiled to an Intermediate Language (IL).

• CLR accepts the IL code and recompiles it to machine code. The recompilation is just-in-time (JIT) meaning it is done as soon as a function or subroutine is called.

• The JIT code stays in memory for subsequent calls. In cases where there is not enough memory it is discarded thus making JIT process interpretive.

LanguagesLanguages

• Languages provided by MS– VB, C++, C#, J#, JScript

• Third-parties are building– APL, COBOL, Pascal, Eiffel, Haskell, ML,

Oberon, Perl, Python, Scheme, Smalltalk…

SummarySummary

• The .NET Framework– Dramatically simplifies development and deployment– Provides robust and secure execution environment– Supports multiple programming languages

Q & AQ & A

THANK YOUTHANK YOU