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Introduction to .NETIntroduction to .NET

Content : Introduction to .NET Technology

Introduction to Web Based

Applications Introduction to ASP.NET

1

By : Amrendra SharanBy : Amrendra Sharan

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Introduction to .NETTechnology

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What is .NET ?

Microsoft.NET is a Framework Microsoft .NET is a Framework which provides a

common platform to Execute or, Run theapplications developed in various prorammin

lanuaes.

Microsoft announced the .NET initiative in !ul"#$$$.

The main intention was to %ride the ap ininteroperability%etween services of variousprorammin lanuaes.

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.NET Framework &%'ectives

The .NET rame!or" is designed to #ul$ll the#ollo!ing ob%ecti&es:

(rovide o%'ect)oriented prorammin

environment

(rovide environment for developin various t"pesof applications, such as Windows)%ased

applications and We%)%ased applications

To ensure that code %ased on the .NET Frameworkcan interate with an" other code

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.NET Framework

CommonCommonLanguageLanguageSpecificationSpecification

(CLR) Common(CLR) CommonLanguageLanguageRuntimeRuntime

ADO.NETADO.NET

C#C#

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The .NET Framework consists of*

The Common 'anguage Speci$cation (C'S)

+t contains uidelines, that lanuae should followso that the" can communicate with other .NETlanuaes. +t is also responsi%le for T"pe matchin.

The rame!or" Base Class 'ibraries (BC') consistent, o%'ect)oriented li%rar" of prepackaedfunctionalit" and pplications.

The Common 'anguage *untime (C'*)

lanuae)neutral development - executionenvironment that provides common runtime forapplication execution .

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ommon /anuae0peci1cation

C'S per#orms the #ollo!ing #unctions:

Esta%lishes a framework that helps ena%lecross)lanuae interation, t"pe safet", and

hih performance code execution (rovides an o%'ect)oriented model that

supports the complete implementation of man"prorammin lanuaes

2e1nes rules that lanuaes must follow, whichhelps ensure that o%'ects written in di3erentlanuaes can interact with each other

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.NET Framework 4ase lass/i%rar"

The lass /i%rar" is a comprehensive, o%'ect)oriented collection of reusa%le t"pes

These class li%rar" can %e used to develop

applications that include*Traditional command)line applications

5raphical user interface 657+8 applications

pplications %ased on the latest innovations provided %"0(.NET

We% Forms

9M/ We% services

%

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Execution in /R

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Common Language RuntimeCommon Language Runtime

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=isual 0tudio #$$A +2E

Microsoft has introduced VisualStudio.NET, which is a tool 6also called

+nterated 2evelopment Environment8 fordevelopin .NET applications %" usinprorammin lanuaes such asVB, C,

VC!! and V". etc.

11

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< 6 0harp8

Microsoft < 6pronounced 0harp8 developed %"Microsoft orporation, 70

New prorammin lanuae that runs on the .NET

Framework

< is simple, modern, t"pe safe, and o%'ect oriented

< code is compiled as manaed code

om%ines the %est features of =isual 4asic, >> and !ava

1

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< Features

0imple Modern

&%'ect)&riented

T"pe)safe

=ersiona%le

ompati%le

0ecure

13

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Introduction to Web BasedApplications

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+ntroducin We% pplications

17

Static #ynamic

Static web pa$e This type of web page consists of

HTML code typed directly into text

or a web page editor

It is saved as an .%tmor .%tmlfile

The content (text, iages, hyperlin!s, and so on" and

appearance of a static web page is always the sae.

These web pages do not #tili$e any database or any

other technology that dynaically b#ilds #p pages or

content at r#ntie based on their visitors inp#t.

&eb 'a$e

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ow re 0tatic We% (aes0erved ?

1

CLENT

*E- SERVER

1. Author

writes

HTML

2. Client requests

the web page

3. Web Server locates

.htl !ile

". HTML strea# !ro the

.htl page$ returne% to

the browser

&. 'rowser processes

HTML an% %ispla(s

page

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2"namic we% pae

12

2"namic We% sites provide its visitors to modif" thecontent of the we% pae %ased on their input.

The" utili@e data%ases and other mechanisms thatena%le to

identif" their visitors present them with customi@ed reetin messaes

restructure the content accordin to user input etc..

Examples* &nline shoppin stores,

search enines

email

chat, communit" portals etc.

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2"namic we% pae

1%

2"namic We% sites make use of (ser)er*side tec%nolo$y+.

0erver)side technoloies add an extra la"erto the static we% pae that ena%les the&ebSer)erto enerate TM/ on the B".

The we% server will 1rst

interpret the server)side code present in

we% paes, enerate the appropriate TM/ and then

send the response to the we% %rowser.

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ow re 2"namic We% (aes0erved?

1

CLENT

*E- SERVER

. T%e &eb browser

sends a re-uest

. &eb Ser)er collects t%e contents/code ! 0TM12 of t%e web pa$e

and parses t%e contents to

produce 0TM1.

3. Browser processes

0TM1 and displays

pa$e

4. T%e &eb Ser)er

searc%es for t%e

re-uested pa$e 5. T%e 0TM1 stream issent back to t%e

re-uestin$ browser

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Introduction to ASP.NET

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+ntroduction to 0(.NET

1

0(.NET is part of the Microsoft .NET framework0(.NET is an e3ective and Bexi%le technolo" for

creatin interacti)e and dynamic web pa$es.

+t is a converence of two ma'or Microsoft

technoloies*6cti)e Ser)er 'a$es /6S'2

ctive 0erver (aes is MicrosoftCs server sidescriptin technolo" for %uildin d"namic we%

paes. .NET Framework

The .NET Framework is a suite of technoloiesdesined %" Microsoft where proram developmenttakes place.

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+ntroduction to 0(.NET

+t is %uilt on .NET ommon /anuae Runtime

0(.NET *

(rovides %etter user authentication

as %etter lanuae support.

as a lare set of new controls 6we% controls8

7ses compiled code, which increases the

performance of the applications

+t is proramma%le usin an" of the .NETlanuaes 6=4.NET,

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Workin of an 0(.NETpplication

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To execute an 0(.NET 1le, the

followin steps arefollowed*

D. we% %rowser sends areuest for an 0(.NET 1leto the we% server %" usin

a 7R/.

#.The we% server receivesthe reuest and retrievesthe appropriate 0(.NET 1lefrom the disk or memor".

:.The we% server forwardsthe 1le to the 0(.NETscript enine forprocessin.

C18ENT

&EB

SE9VE9

6S'.NET

Script

En$ine

Workin of an 0( NET

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Workin of an 0(.NETpplication

4

. The 0(.NET script eninereads the 1le from top to%ottom and executes it.

G. The processed 0(.NET 1leis enerated as an TM/document and the0(.NET script eninesends the TM/ pae to

the We% server.

;. The We% server thensends the TM/ code tothe client which interprets

the output and displa"s it.

C18ENT

&EB

SE9VE9

6S'.NET

Script

En$ine

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dvantaes of 0(.NET

7

Eas" (rorammin Model

Flexi%le /anuae &ptions

ompiled Execution

Rich &utput achin We%)Farm 0ession 0tate

Enhanced Relia%ilit"

Master (aes

Themes +mproved 0ecurit"

We% 0ervices

+mproved (erformance and 0cala%ilit"

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=isual 0tudio #$$A +2E

Statu -a

Too! -o8

5enu -a

So!ution

E8p!oe

&opetie

*in"o+

Document

+in"o+

Tit!e -a

reatin a New We%

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reatin a New We%pplication

2

To start a new %eb &pplication in ' )**+, lic! the Create Web Site

b#tton on the tart page or elect -ile /ew %eb ite

The /ew %eb ite allows

yo# to choose0

Teplates Lang#age for creating an

application

Location where the application

will be created

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reatin a New pplication6ontinued8

%

&fter yo# create a new %eb &pplication, 1efa#lt.aspx page is added to this

%ebsite. To 2enae this page, Selectthe page fro the %ebsite node in the

Solution Explorer Right Click Rename.

-iles can be added to the 3ro4ect,

#sing ol#tion 5xplorer0

2ight clic! on the pro4ect node, in

the Solution Explorer,and select

the optionAdd New Item.

TheAdd New Itemwindow will

pop#p.

elect the type of file (ite" to be

added and clic! on &dd.

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0olution Explorer

3resents a tree view tructureof filespresent in the pro4ect.

6y defa#lt a /ew %ebsite will contain0

&n &pp71ata folder

& 1efa#lt.aspx page (incl#ding

1efa#lt.aspx.cs"

To 6ie+ So!ution E8p!oe9

Select!iew: SolutionExplorer

82

"rebuttonCtrl#W,S

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0olution Explorer6ontinued8

3$

The Toolbar at the top of ol#tion 5xplorer enables vario#s tas!s.

&opetieNet

Re!ate"

,i!e

Vie+

DeigneAS&.NET

Configuation

Refe;

Co"e

Cop/ *e0ite

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Tool%ox

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To add controls in the $eign Window#se

%oolbox.

There are vario#s tooltabavailable in the

Toolbox.

The controls in the I15 are presented in a

hierarchical anner (e.g., tandard Tab, 1ata Tab,

'alidation, /avigation, %eb3arts etc.".

1epending on the type of pro4ect (application" the

toolboxtabwillvar&.

To view the tool box0

Selecten#!iew: %oolbox

'R

3ressb#ttonsCtrl#Alt#( or Ctrl#W, (

9o# can also view the controls as icons by right:

clic!ing on the toolbox yo# want to change and

deselecting the List 'iew.

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(roperties Window

3

To config#re a control0 lic! once to select it

"re)*orelectmenu!iew> "ropertie

window

Modify the appropriate properties in the window There are vario#s options provided for viewing

the properties of the selected control, s#ch as0 Categori+edview

Alphabeticalview

"ropertieview(deault" Event!iew

"ropert& page

To vieworchangethepropertieand eventof a selected control d#ring

design #se the "ropertieWindow

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ddin an Event

33

5vents can be added to

the code in one of three

ways0

-. $oubleclickinga controlin

design view

. %&pingthe code an#ally;. electing the5vents Icon

and do#ble clic!ing the

re

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(ro'ect 0ettins

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RightClickonthe ormyo# want set as

the start#p page in the SolutionExplorer.

elect option SetAStart"age.

etting Startup"age/

Startup"ro0ect(In case of #ltiplepro4ects"0

RightClickon"ro0ectto set as start#p

pro4ect in the SolutionExplorer.

elect 8ption SetAStart1p"ro0ect.

"ro0ectSettingcan be ad4#sted #sing

vario#s options in the "ro0ect"ropertieen#or by #sing the

SolutionExplorerwindow.

%hee etting change baed on the

t&pe o application developed.

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Resources

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=isual 0tudio #$$A We%sitehttp*HHmsdn.microsoft.comHvstudioH

http://msdn.microsoft.com/vstudio/http://msdn.microsoft.com/vstudio/

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Iuestions and omments

3