Transcript NET Framework

Slide 1
© 2001 By Default!
.NET Overview
BY:
Pinkesh Desai
A Free sample background from www.powerpointbackgrounds.com
Slide 2
© 2001 By Default!
What is .NET ??????

Microsoft® .NET is a platform for building, running and experiencing the
next generation of distributed applications. It spans clients, servers and
services and consists of:

A programming model that enables developers to build XML Web
services and applications

A set of XML Web services, such as Microsoft .NET My Services
(formerly code-named 'Hailstorm'), that helps developers deliver a
simple and integrated user experience;

A set of servers, including Windows® 2000, SQL Server™ and BizTalk™
Server, that integrates, runs, operates and manages XML Web services
and applications
A Free sample background from www.powerpointbackgrounds.com
Slide 3
© 2001 By Default!
Abstraction of OS
Effort to run a program on many different
H/W or OS
 H/W level achieved through OS
 The problem at Operating System level
 “A tough computer problem can be solved by
addition of a layer of Abstraction”
 Microsoft has done the same by layering
CLR+System calls Library on top of
Operating System

A Free sample background from www.powerpointbackgrounds.com
Slide 4
© 2001 By Default!
.NET Framework
.NET Framework
Operating System
Hardware
Operating System
Hardware
Hardware
.NET abstracts operating systems, which are abstracting
hardware.
This means that we can write software to target the CLR – and
that software can run on any operating system or platform
which implements the CLR.
A Free sample background from www.powerpointbackgrounds.com
Slide 5
© 2001 By Default!
.NET Framework

CLR (Common language Runtime)

.NET system Class Libraries

ASP+ (Web Forms)

ADO+

C# (C Sharp)
A Free sample background from www.powerpointbackgrounds.com
Slide 6
© 2001 By Default!
.NET Framework
A Free sample background from www.powerpointbackgrounds.com
Slide 7
© 2001 By Default!
CLR






Heart of the .NET Framework
Provides an environment in which programs can
run
Support many programming languages in a
common manner
.NET applications are compiled to a common
language known as Microsoft Intermediate
Language, or "IL".
The CLR, then, handles compiling the IL to
machine language
IL contains methods, properties and fields related
to the components that are compiled
A Free sample background from www.powerpointbackgrounds.com
Slide 8
© 2001 By Default!
Compilation

Great Flexibility

Root of many .NET capability

MSIL – Microsoft Intermediate Language

All languages that work with .NET have compilers
that generate MSIL rather than machine code

MSIL and Metadata will be compiled into machine
code
A Free sample background from www.powerpointbackgrounds.com
Slide 9
© 2001 By Default!
Compilation ….
Code
Compiler
IL
Metadata
JIT Compiler
Execution
A Free sample background from www.powerpointbackgrounds.com
Slide 10
© 2001 By Default!
Compilation Example

A developer build an application in VB.NET

Compilation process generates IL code
rather than binary machine code

When user actually runs the application, the
CLR invokes a just-in time (JIT) compiler

This compiler runs on the user’s computer to
compile the IL to machine code
A Free sample background from www.powerpointbackgrounds.com
Slide 11
© 2001 By Default!
Metadata
Provides an exact description of the
component that were compiled to IL
 COM inability to describe the component
 Data is kept in XML so easily accessible and
understandable
 Describe component’s interface and so can
be created and called by any language
 Eliminates any reliance on the windows
registry

A Free sample background from www.powerpointbackgrounds.com
Slide 12
© 2001 By Default!
Key design goals of CLR
Simpler and Faster development
 Automatic Handling of memory Management
and process communication
 Tool support
 Simple and safer deployment
 Cross Language integration
 Versioning and deployment support

A Free sample background from www.powerpointbackgrounds.com
Slide 13
© 2001 By Default!
Simple and Faster development

Less code more reuse

Provides rich set of functionality

Programs in .NET use this functionality and
so less handwritting
A Free sample background from www.powerpointbackgrounds.com
Slide 14
© 2001 By Default!
Memory management and
Process communication

Unnecessary to use malloc to set aside
space for an array in C++.

Need to just simple declaration statement

Handles references counting on instantiation

Automatic garbage collection for collecting
objects no longer referenced by the
application
A Free sample background from www.powerpointbackgrounds.com
Slide 15
© 2001 By Default!
Tool support

Designed to support multiple languages

Furnishes a rich set of object models that are
useful to tools like designers, wizards ..

Third party tools can be easily incorporated

Cross language integration
A Free sample background from www.powerpointbackgrounds.com
Slide 16
© 2001 By Default!
Simple and safer deployment

Deployment is very easy because:
– Applications in .NET are composed of assemblies which
contains IL and metadata as previously stated
– So both code and a complete descriptor of the code are
in one package and self describing.
– So there is no need to register anything in the registry

Application produced in .NET framework can be
easily copied and run using XCOPY
A Free sample background from www.powerpointbackgrounds.com
Slide 17
© 2001 By Default!
Cross Language Integration

Enable code written in one language to
integrate with code written in other language

Include cross language inheritance,
exception handling .

This can be done because there is a need to
get the reference of other component through
Metadata and metadata is language
independent
A Free sample background from www.powerpointbackgrounds.com
Slide 18
© 2001 By Default!
Versioning Services

CLR supports side by side execution of
multiple versions of the same component.

If one program want to use the component
with particular version that it can get it from
the metadata information
A Free sample background from www.powerpointbackgrounds.com
Slide 19
© 2001 By Default!
Class Libraries
XML Web
Services
Web
Forms
ASP.NET
Windows
Forms
Data and XML Classes
Base Framework Classes
Common Language Runtime
A Free sample background from www.powerpointbackgrounds.com
Slide 20
© 2001 By Default!
Class Libraries



Base classes: input/output , string manipulation,
security management, network communications,
thread management, text management and other
functions.
Data classes support persistent data management
and include SQL classes for manipulating persistent
data stores through a standard SQL interface.
XML classes enable XML data manipulation and
XML searching and translations.
A Free sample background from www.powerpointbackgrounds.com
Slide 21
© 2001 By Default!
Class Libraries…


Web Forms include classes that enable you
to rapidly develop web GUI applications.
Windows Forms support a set of classes that
allow you to develop Windows GUI
applications – facilitating drag-and-drop GUI
development and providing a common,
consistent development interface across all
languages supported by the .NET Framework
A Free sample background from www.powerpointbackgrounds.com
Slide 22
© 2001 By Default!
Win Forms
.NET provides a single, unified way to
create user interfaces outside of a
browser environment - Win Forms
 Win Forms provide a language-neutral
way to create forms, add controls, and
respond to the user's actions
 Win Forms are not based on ActiveX
 They are instances of classes in the
.NET system class library.

A Free sample background from www.powerpointbackgrounds.com
Slide 23
© 2001 By Default!
References






Introducing .NET by Wrox Press
Introducing .NET by Microsoft Press by David
Platter
http://www.gotdotnet.com
http://www.msdn.microsoft.com/net
http://www.asp.net
Visual Studio.NET:
ttp://www.msdn.microsoft.net/vstudio/nextgen/getst
arted.asp

Tool for java developers
http://www.msdn.microsoft.com/visualj/
A Free sample background from www.powerpointbackgrounds.com
Slide 24
© 2001 By Default!
Thank You.
A Free sample background from www.powerpointbackgrounds.com