dotNet(IPT)

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What is .Net?

.NET is a revolutionary newplatform, built on open Internetprotocols and standards, withtools and services that meldcomputing and communicationsin new ways.

-Microsoft


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Introduction: (in brief)

New programming methodology Multiple Languages (VB.Net, C#, J#,

Cobol.Net, etc.)

JIT Compiler

Primary Parts: .Net Framework

Common Language Runtime (CLR)

RTM: 2002 (v1.0)

2003 (v1.1)

2005 (v2.0)


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Before .NET

Windows GUI development:

Win32 API, MFC, Visual Basic

Web development: ASP

JavaWrite once, run

anywhere.

Embrace and extend: Visual J++


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.NET Features/Claims Common Language Runtime (CLR)

Runs bytecode in an Inter-Language (IL) format.

Allows inter-language and inter-machineinteroperability.

Rich base class library Set of components and services giving developers

access to the features of the runtime.

Ease of development of web-based services Provides an environment facilitating development

and deployment of web based services.

New Programming Language called C# Derives from C and C++ with several additionalfeatures such as garbage collection.

Provides SOAP capabilities Allows .NET components to exchange data

messages with components on other platforms.


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.Net Framework

A set of approximately 3500 classes.

Classes are divided into namespacesgrouping similar classes.

For organization, each class belongs toonly one namespace.

Most classes are lumped into a namespace called System System.Data: DB access

System.XML: reading/writing XML

System.Windows.Forms: Forms manipulation

System.Net: network communication.


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Web App Benchmark


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.Net Framework Supports Web Standards

HTML

XML

XSLT

SOAP

WSDL (Web Services)

ADO.Net: ActiveX Data Objects

ASP.Net: Active Server Pages

ILDASM: A tool used to properlydisplay IL in a human readable format.

.Net Compact Framework (mobiledevices


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Distributed Transactions


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Web Service Throughput


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Terminology "ABC"

CLR: Common Language Runtime One runtime for many programming languages

Intermediate Language (IL)

One intermediate, high-level assembly-stylelanguage that is emitted by language compilers

Assembly Container for code, metadata and resources

your new term for what you used to call "D-L-L"

Metadata Information that describes the shape of data and

the runtime behavior of a program


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Assembly

CLR Execution Model:

Conceptual

SourceCode

LanguageCompiler

Compilation

Before installation or

the first time eachmethod is called

Execution

JITCompiler

NativeCode

Code (IL)Metadata


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.Net Programming

Languages1. Visual

Basic.Net

2. C#

3. APL4. Fortran

5. Pascal

6. C++

7. Haskell

8. Perl

9. Java Language

10.Python

11.COBOL

12.MicrosoftJScript

13.RPG

14.Component

Pascal

15.Mercury

16.Scheme

17.Curriculum

18.Mondrian

19.SmallTalk

20.Eiffel21.Oberon

22.Standard ML

23.Forth

24.Oz


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Multi-Language Platform

The .NET Platform is language neutral

All .NET languages are first class players

Complete cross-language integration

Highly leveraged tools

Microsoft is providing

Visual Basic, C++, C#, Java, JScript

Industry and academia

APL, COBOL, Eiffel, Fortran, Haskell, ML, Perl,

Python, RPG, Scheme, Smalltalk,


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Comparison to Java

Hello.java Hello.class JVM

compile execute

Hello.vb Hello.exe CLR

compile execute

Source code Byte code

CILSource code


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C# vs. VB.Net

C# No Auto Case adjust

Requires {, }, ;

Enforces programming

rules.

Unsafe Blocks

Documentation

Comments

Operator Overloading

VB.Net Auto case adjust

No line

terminators

Requires Begin,End

Still intended as

RAD tool.

Allows latebinding


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Hello, VB.NET!.method public static void Main() cilmanaged{.entrypoint.custom instance void

[mscorlib]System.STAThreadAttribute::.ctor()= ( 01 00 00 00 )// Code size 14 (0xe).maxstack 8IL_0000: nopIL_0001: ldstr "Hello VB.NET!"

IL_0006: call void[mscorlib]System.Console::WriteLine(string)IL_000b: nopIL_000c: nopIL_000d: ret

} // end of method Hello::Main

Module HelloSub Main()

Console.WriteLine("Hello,

VB.NET!")End Sub

End Module

ildasm Hello.exe


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Global Assembly Cache

(GAC)

Used as a centralized

repository to store all shared

assembliesUsed to store the code

downloaded from the Internet

Repository for prejitted code


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Side by Side Execution

GACPrivate

Policy

Travel Portal (.asmx)Reference: BookFlight, v 1.0.0.5


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IBookflight

IDispatch

IUnknown

COM Callable

Wrapper

COM Interoperability

BookFlight

IBookFlight

Common Language Runtime

ISeatRes

SeatRes

Runtime CallableWrapper

LegacyClient


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Advantages of .Net

Write once, run everywhere

Multiple programming languages(20+)

Coding Reduction Controls

Template projects IIS/Cassini support

Ease of Deployment

Security Features Evidence-based security

Code access security

The verification process

Role-based security

Cryptography

Application domains


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Summary

Unifies programming models

Dramatically simplifies

development Provides robust execution

environment

Supports multiple programminglanguages

Natively supports XML Web

Services


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Presentedby,

B.Krishnaveni

M.JananiR.Krishnaveni

K.Kavitha


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Documents

dotNet(IPT)