Rajiv and Shipra

Introduction to .NET (asp.net,c#,vb)

.NET –Framework

• It is a programming platform that is used for developing Windows and Web-based software.

• It has number of precoded solutions that manage the execution of program specifically for framework

• .NET framework platform is based on two technology

• XML(eXtensive Markup Language)

• The suit of internet protocol.

XML• .Key feature of XML are.

• It unlock information that can be edited,

programmed and organized.

• It allows website to collaborate and provides groups of web services. They can

be interact with each other.

• It separate date from presentation.

.NET – What Is It?

Operating System + Hardware

.NET Framework

.NET Application

Framework Class LibraryFramework Class Library

Common Language RuntimeCommon Language Runtime

Common Language SpecificationCommon Language Specification

ADO.NETADO.NET

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ASP.NET: Web ServicesASP.NET: Web Servicesand Web Formsand Web Forms

WindowsWindowsFormsForms

Component of Frame work

The .NET Framework.NET Framework Services

• Common Language Runtime• Windows® Forms• ASP.NET

– Web Forms– Web Services

• ADO.NET, evolution of ADO• Visual Studio.NET

Common Language Runtime (CLR)

•CLR :An Execution engine of framework

•CLR provides many features such as imposed by – Memory Management– Code saftety verification and Code execution– Error and exception handling– Garbage Collection

Compilation in .NET

Code in VB.NET Code in C#Code in another .NET Language

VB.NET compiler C# compilerAppropriate

Compiler

IL(IntermediateLanguage) code

CLR just-in-timeexecution

MSIL• .NET languages are not compiled to machine code. They

are compiled to an Microsoft Intermediate Language (IL).

• CLR accepts the IL code and recompiles it to machine code. The recompilation is just-in-time (JIT) meaning it is done as soon as a function or subroutine is called.

• The JIT code stays in memory for subsequent calls. In cases where there is not enough memory it is discarded thus making JIT process interpretive.

Languages

• Languages provided by MS– VB, C++, C#, J#, JScript

• Third-parties are building– APL, COBOL, Pascal, Eiffel, Haskell, ML,

Oberon, Perl, Python, Scheme, Smalltalk…

Windows Forms

• Framework for Building Rich Clients– RAD (Rapid Application Development)– Rich set of controls– Data aware– ActiveX® Support– Licensing– Accessibility– Printing support– Unicode support– UI inheritance

ASP.NET•ASP.NET is a technology used to create dynamic web application. It is based on .NET platform and support .NET compatible language for its application.•Features•Rich Class Framework:. Net Framework consists of around 4500 classes that encapsulate the rich functionality like XML data access, file upload, image generation and performance monitoring.

•Mobile Web Device Support: It provides mobile controls for developing mobile application. Using the application code, the mobile control auto generate WAP,WML.

ASP.NET

• Advantages – Powerful database-driven Support: It provides a

toolbox with rich set of tools to assist in the coding and designing. The toolbox has been incorporate within the IDE like Drag & Drop facilities and automatic deployments.

– Faster Web Application: Complication of code into machine language rather then interpretation of code makes ASP.NET web applications faster.

ASP.NET Web Forms

• Asp.net is 4th generation language mainly used for dynamic web application.

• Feature

• Code-behind Web Forms

• Easier for tools to generate

• Code within is compiled then executed

• Improved handling of state information

• Support for ASP.NET server controls– Data validation– Data bound grids

ASP.NET Web Services

• A technical definition– “A programmable application component accessible

via standard Web protocols”

IDE• It provides a stranded text editor to write

the .net applications.

• The Working environment of .net is know as IDE.

• It provides the common environment for designing,editing,debugging with in common environment is known as IDE.

• IDE has integrated compiler to compile and execute the application. The user can compile either single source file or complete project

Element of IDE

• Solution Explorer window

• Server Explorer window

• Properties window

• Error List window

• Code editor window & Toolbox

ADO.NET (Data and XML)

• Development tool that contains a rich set of productivity and debugging features

.NET – Hierarchy, Another View

CLR

CLR

Summary

• The .NET Framework– Dramatically simplifies development and deployment– Provides robust and secure execution environment– Supports multiple programming languages