. N E T. N E T

Presented ByPresented By

Shyam Srinivas KShyam Srinivas K

F r a m e w o r kF r a m e w o r k

A N O V E R V I E W

. N E T O V E R V I E W. N E T O V E R V I E W

Introduction to .NET Web Services The .NET Framework Common Language Runtime Windows Forms Web Forms ADO.NET Languages

What is .NET ?

I n t r o d u c t i o n t o . N E T I n t r o d u c t i o n t o . N E T

A vision of how information technology will evolve

A platform that supports the vision

A business model of software as a service

I n t r o d u c t i o n t o . N E T I n t r o d u c t i o n t o . N E T

A Vision

Web sites will be joined by Web services

New smart devices will join the PC

User interfaces will become more adaptable and customizable

Enabled by Web standards

I n t r o d u c t i o n t o . N E T I n t r o d u c t i o n t o . N E T

A PLATFORM

- The .NET Framework

- Visual Studio.NET

- .NET Enterprise ServersDatabase, Messaging,

Integration, Commerce, Proxy, Security,

Mobility, Orchestration, Content

Management- .NET Building Block Services

Passport.NET My Services (“Hailstorm”)

- Goal: make it incredibly easy to build powerful Web applications and Web services

I n t r o d u c t i o n t o . N E T I n t r o d u c t i o n t o . N E T

I n t r o d u c t i o n t o . N E T I n t r o d u c t i o n t o . N E T Features of .NET Support for 27 programming languages

Introduction of C# - combination of JAVA and C++

Departure from Intel-based code to CLR – Common Language Runtime

Core products – C#, CLR, WinForm, ASP.NET, ADO.NET

.NET makes extensive use of XML and SOAP

SOAP – can be used as substitute for EAI or middleware

Integrate front & back office, in addition to Web Services

Comparable to Sun’s J2EE

Signifies move toward “Open standards”

I n t r o d u c t i o n t o . N E T I n t r o d u c t i o n t o . N E T Key Benefits of .NETEase of Use

Object-oriented model- Everything is an object

Namespace and Framework structure- Easier to comprehend and use

- Naming scheme of namespaces reflects the underlying functionality

Freedom to Choose

The language that meets your needsThe development tool that is best for youThe “features and functionality” to “plug in to”

I n t r o d u c t i o n t o . N E T I n t r o d u c t i o n t o . N E T Key Benefits of .NET (contd.) Stability

Say “goodbye” to memory leaksGarbage collection manages memoryAssembly eliminates DLL compatibility issuesDeliverables are restricted to an assembly

Security

Restricting or containing the illegal memory reference

Comprehensive security modelAssembly specificSystem wideCode inspection through MSIL

I n t r o d u c t i o n t o . N E T I n t r o d u c t i o n t o . N E T Key Benefits of .NET (contd.) Deployment and Management

Deployment: Code is “Assembled” and Run “Securely”

Maintenance: Version Maintenance Simplified

Unified Experience

Integrate disparate services into a new, unified solution

Web Services

The Web the Way You Want It

AnywhereAnytimeOn any device

I n t r o d u c t i o n t o . N E T I n t r o d u c t i o n t o . N E T Who uses this Technology ?

Any company with a presence on the Internet or who uses the Internet as a means for data exchange

On-line retailers, development of wireless apps for non-PC devices

CSFB, Marks & Spencer, EDS, Trans World Entertainment.

W e b S e r v i c e s W e b S e r v i c e s

.NET is built on the idea of Web Services

It uses Framework classes, such as

System.Web.ServicesSystem.Web.Services.DescriptionSystem.Web.Services.Discovery

It enables communication through open standards

XML - Service description expressed with

WSDL

SOAP - Basic wire format - Universal Description Discovery

Integration (UDDI)

HTTP

W e b S e r v i c e s W e b S e r v i c e s

T h e . N E T F r a m e w o r k T h e . N E T F r a m e w o r k A set of technologies for developing and using components to create:

Web Forms

Web Services

Windows Applications

Supports the software lifecycle Development

Debugging

Deployment

Maintenance

T h e . N E T F r a m e w o r k T h e . N E T F r a m e w o r k The .NET Framework and Visual Studio.NET

System.Data

DesignOLEDB

SQLTypesSQL

System

GlobalizationDiagnostics

ConfigurationCollections

ResourcesReflection

NetIO

ThreadingText

ServiceProcessSecurity Runtime

InteropServicesRemotingSerialization

System.Xml

XPathXSLT Serialization

System.Web

Configuration SessionStateCaching Security

ServicesDescriptionDiscoveryProtocols

UIHtmlControls

WebControlsSystem.Drawing

ImagingDrawing2D

TextPrinting

System.Windows.FormsForm Button

MessageBox ListControl

.NET Framework Classes

T h e . N E T F r a m e w o r k T h e . N E T F r a m e w o r k

C o m m o n L a n g u a g e R u n t i m eC o m m o n L a n g u a g e R u n t i m e

Development services- Deep cross-language interoperability

- Increased productivity

Deployment services- Simple, reliable deployment

- Fewer versioning problems

Run-time services- Performance - Scalability - Availability

- Reliability - Security - Safety

GOALS

COMPLILATION

Source CodeSource Code

C++, C#, VB or any .NET language

AssemblyAssembly

DLL or EXEcsc.exe or vbc.exe

Compiler

C o m m o n L a n g u a g e R u n t i m eC o m m o n L a n g u a g e R u n t i m e

C o m m o n L a n g u a g e R u n t i m eC o m m o n L a n g u a g e R u n t i m e

Assemblies Assembly

- Logical unit of deployment- Contains Manifest, Metadata, MSIL and resources

Manifest- Metadata about the components in an assembly (version,

types, dependencies, etc.)

Type Metadata- Completely describes all types defined in an assembly:

properties, methods, arguments, return values, attributes, base classes, …

Microsoft Intermediate Language (MSIL, IL)- All languages compile to IL (managed code)- IL is always compiled to native code before being executed

Resources- E.g. .bmp, .jpg

C o m m o n L a n g u a g e R u n t i m eC o m m o n L a n g u a g e R u n t i m e

CLR

VBSource code

Compiler

C++C#

Assembly AssemblyAssembly

Operating System Services

MSIL

Common Language Runtime JIT Compiler

Compiler Compiler

Nativecode

ManagedCode

ManagedCode

ManagedCode

UnmanagedCode

CLR Services

Ngen

Multiple Language Support Common Type System (CTS)

- A superset of the data types used by most modern programming languages

Common Language Specification (CLS)- A subset of CTS that allows code written in different languages to interoperate

What languages?- Microsoft: C++, Visual Basic, C#, JScript- Third-Party: Cobol, Eiffel, Smalltalk, Scheme, Oberon, Haskell, Java, Python, Perl, …

C o m m o n L a n g u a g e R u n t i m eC o m m o n L a n g u a g e R u n t i m e

Applications An application consists of one or more assemblies

How does one assembly bind to another?- Based upon metadata and policy

Local (preferred)Assembly Global Cache

Multiple versions of an assembly may exist on the same machine

- Easier software deployment, updates and removal- Multiple versions of an assembly can even be used by

the same application

C o m m o n L a n g u a g e R u n t i m eC o m m o n L a n g u a g e R u n t i m e

Evidence-based security (authentication)

Based on user identity and code identity

Configurable policies

Imperative and declarative interfaces

Security

C o m m o n L a n g u a g e R u n t i m eC o m m o n L a n g u a g e R u n t i m e

Framework for building rich clients

Built upon .NET Framework, languages

Rapid Application Development (RAD)

Visual inheritance

Anchoring and docking

Rich set of controls

Data-aware

Easily hooked into Web Services

ActiveX support

Licensing support

Printing support

Advanced graphics

Extensible controls

W i n d o w s F o r m sW i n d o w s F o r m s

W e b F o r m sW e b F o r m s

Allows separation of UI and business logic

Uses .NET languages - Not just scripting

Easy to use components

XCOPY/FTP deployment

Simple configuration (XML-based)

Caching (pages, fragments, custom)

Scalable session state management

Tracing support

ASP.NET is extensible - No ISAPI / ASP dichotomy

Automatic process rollover

Forms-based authentication

Similar to ADO, but better factored

Language-neutral data access

Supports two styles of data access- Disconnected- Forward-only, read-only access

Supports data binding

DataSet: a collection of tables

Can view and process data relationally (tables) or hierarchically (XML)

A D O . N E TA D O . N E T

L a n g u a g e sL a n g u a g e s

New language created for .NET

Safe, productive evolution of C++

Key concepts:- Component-oriented- Everything is an object- Robust and durable code- Preserving your investment

Submitted to ECMA for standardization

Uses .NET Framework classes

C #

L a n g u a g e sL a n g u a g e s

Modernizes and simplifies Visual Basic- Inheritance

- Threading

- Exception handling

Support for late binding

Uses .NET Framework classes

Visual Basic . NET