ASP .NET AND .NET Framework 4.5

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AgendaIntro to.NET

What is .NET and Important components

Compilation Model

Incremental .NET Framework Stack

CLR Versions andSide By side Execution

ASP.NET

The .NET Framework is

an execution and

development

platform for building

apps for Windows,

Windows Phone ,Windows

Server and Web

Services...

.NET Framework

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Framework Class

Library

Common Language Runtime

.NET Framework

Is run-time environment to execute .NET Apps

Code ExecutionException HandlingResource ManagementGarbage CollectionCode Access SecurityJust In Time CompilationLanguage Interoperability

• Library of tested, reusable code that developers can use in own applications

• Consists of classes, interfaces, and structures, delegates etc.

• Categorized using Namespaces

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Visual C# VB.NET VC+

+.NET

F# JavaScript

Third Party

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Console Applications

Windows Services

Client/Desktop

Applications

Win Forms

WPF

Server/Web Applications

ASP.NET Web

Forms

ASP.NET MVC

XML Web Services

WCF Services

Win Store Apps

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OS

CLR

Executed by CLR

Executed by OS

OS

Classic Compilation Vs. .NET Compilation

Machine Code

JIT

Assembly [CIL]

C# Compiler

C# Source Code

Machine Code

C Compiler

C Source Code

Using FCL Classes

FCL Assemblie

s

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Assembly Manifest

Type Metadata

Resources

CIL

Assembly

Meta Information

• Common Intermediate Language• Earlier called Microsoft Intermediate Language

or MSIL or IL• Also referred as Managed Code• Is an object-oriented assembly language• Advantages

• Platform Independence• Language Independence

• Information about all types used in source code

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• Consist of Meta-information and CIL• Basic Building blocks of .NET Framework• Self Descriptive• Two Types

• Private • Public

• Information about assembly• Assembly name• Assembly Version• Security Key• References to other assemblies used

Platform Independence

Machine Code

JIT

Assembly Loader

Assembly / PE (exe / dll)

Meta Information CIL Code

C# Compiler

C# Source Code(Uses ref of dlls from FCL)

Development PlatformProduction Platform

.NET Framework

CLR

FCL

Assembly / PE

FCL Class Ref

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Language Independence

VB.NET Code

VB.NET Compiler

C# Code

C# Compiler

CIL

JIT

Native Code

F# / C++.NET/ Any

CLS compatible

Lang Compiler

FCLCLR

.NET Framework

Revisited

CLR

CLS works with the CTS to ensure language interoperabilityThe CLS is a set of minimum standards that all compilers targeting .NET must support.

GCCAS

CLSJIT CTS

FCL

Common Type System defines the setpredefined data types available in IL

• Compiles CIL to Machine code• compiles portion of code as it is called.

And cached

Code Access Security Applies the permission to code, based on source of code and other identities

• garbage collector manages the allocation and release of memory for your application.

• Reclaims unreferenced or dead objects and clears their memory.

Is run-time environment to execute .NET AppsCommercial implementation of CLI by Microsoft

Code ExecutionException HandlingResource ManagementGarbage CollectionCode Access SecurityJust In Time CompilationLanguage InteroperabilityApplication Isolation

• Common Language Infrastructure is an international standard that is the basis for creating execution and development environments in which languages and libraries work together seamlessly.

CLR 1.1

FCL 1.1

CLR 2.0

FCL 2.0

CLR 4.0

FCL 4.0

CLR 4.5

FCL 4.5

FCL 3.0

FCL 3.5

CLR 1.0

FCL 1.0

CLR Versions

Side By Side Execution Allows multiple versions of the Framework to be installed on a single system

2002 20052003 2010 2012

ASP.NET

• Asp.net is an open-source server-side Web application framework designed for Web development to produce dynamic Web pages. It was developed by Microsoft to allow programmers to build dynamic web sites, web applications and web services.

• first released in January 2002 with version 1.0 of the .NET Framework.• 1)Web forms 2)MVC

ASP Architecture

IIS (asp.net_isapi.dll)(Internet Information Server)

Client

Server

Request:http://www.msn.com/default.aspx

Response:<html>…</html>

Network HTTPTCP/IP

PC/Mac/Unix + Browser (IE, FireFox)

Web Forms

• Web Forms are pages that users request using their browser. These pages can be written using a combination of HTML, client-script, server controls, and server code. An ASP.NET Web Forms page presents information to the user in any browser or client device.

• The ASP.NET Web Form is separated into two logical areas:

• The template (designing code).

• A collection of code behind the Web Form .

Code behind model

• Microsoft recommends dealing with dynamic program code by using the code behind model, which places this code in a separate file or in a specially designated script tag.

•  Code behind files typically have names like MyPage.aspx.cs  while the page file is MyPage.aspx.

Directives

• A directive is a special instruction on how ASP.NET should process the page.

• The Most Common directive is <%@ Page %> which can specify many attributes used by the A SP.NET page parser and compiler.

• Example:

<%@ Page Language="C#" AutoEventWireup=“True" CodeFile="Default.aspx.cs" Inherits="Default" %>

• When AutoEventWireup is true, ASP.NET automatically treats a method of name Page_eventName as an event handler

WEB SERVER CONTROLS

• TextBox

• Button

• Radio Button/Radio Button List

• CheckBox/ CheckBox List

• HyperLink/Link Button

• Fileupload Control

• Dropdown List/List Box

VALIDATIONS

Validations is a Process of checking the user input for Various checks before the form is submitted to the server.

• Compare Validator

• Required Field Validator

• Range Validations

• Validation Summary

• Regular Expression Validator

Master Page

WEB SERVICES

• Web services can be defined as a piece of code that runs on a web server and provides data to the requesting clients.

Characteristic's of Web Services :

1) It’s a logic and does not contain UI.

2) Web services are hosted on webserver.

3) Web services transfer data in the form of XML/JSON

4) They are Platform Independent

5) Web services interact with the Database.

6) Web services are normally in the form of classes and public methods.

SOAP : SOAP means Simple Object Access Protocol which is used to invoke a web service hosted on the network

SESSIONS

• USER 1----------> ------SESSION 1----->

• USER 2----------> ------SESSION 2----->

• ! !

• USER N---------> ------SESSION N----->

WEB SERVERAPPLICATION

COOKIES

• Cookies are used to store small piece of information on the client side.

• Gmail, Hotmail and other websites they use cookies for the purpose of signing in and maintaining certain information

ASP VS ASP.NET

ASP ASP.NET

ASP is interpreted. ASP.NET is compiled. 

ASP has Mixed HTML and coding logic . Asp.net html and coding part are separated by code behind files. 

ASP.NET purely object oriented. ASP is partially object oriented.

For ASP No in-built support for XML ASP.NET full XML Support for easy data exchange

ASP has no inbuilt facility for Validation of controls

ASP has inbuilt facility for Validation of controls