Microsoft dot net framework

.NET Framework
Microsoft's Platform for
Application Development

 So what is .NET?
 The .Net

 Microsoft's platform for
software development
 Unified technology for
development of almost
any kind of applications.

What is .Net Framework?
 .Net Framework
 Programming model for .NET
 Developing and executing .NET applications
 Unified programming model, set of
languages, class
libraries, infrastructure, components and tools for
application development
 Environment for controlled execution of managed
code

Components of .Net Framework
 Common Language Runtime (CLR)
• Garbage collection
• Language integration
• Multiple versioning support
• Integrated security

 Framework Class Library (FCL)
• Provides the core functionality:
ASP.NET, Web Services, ADO.NET, Windows
Forms, IO, XML, etc.

 User and Program Interface

.Net Framework
Common Language Runtime
• CLR manages code execution at
runtime
• Memory management, thread
management, etc.


Operating System

.Net Framework
Base Class Library
• Object-oriented collection of reusable
types
• Collections, I/O, Strings, …

.NET Framework (Base Class Library)


Operating System

.Net Framework
Data Access Layer
• Access relational databases
• Disconnected data model
• Work with XML

ADO .NET and XML



Operating System

.Net Framework
ASP.NET & Windows Forms
• Create application’s front-end – Web-
based user interface, Windows
GUI, Web services, …

ASP .NET Windows
Web Forms Web Services
Forms
Mobile Internet Toolkit

ADO .NET and XML



Operating System

.Net Framework
Programming Languages
• Use you favorite language

C++ C# VB.NET Perl J# …
ASP .NET Windows
Forms

ADO .NET and XML



Operating System

.Net Framework
Common Language Specification

C++ Common Language Specification…
C# VB Perl J#
ASP .NET Windows
Forms

ADO .NET and XML



Operating System

.Net Framework
Visual Studio .NET

C++ C# VB Perl J# …

Common Language Specification

Visual Studio .NET
ASP .NET Windows
Forms

ADO .NET and XML



Operating System

Common Language Runtime(CLR)

The Heart of .NET Framework

Common Language Runtime(CLR)

 Essential components
 Service provider -
 Code compilation
• Known as Just In Time (JIT) compilation
 Memory allocation
 Garbage collection
 Something like virtual machine
 Like the Java Virtual Machine (JVM)
 allows the execution of code across different
platforms.

Responsibilities of CLR
 Execution of the IL code and the JIT
compilation
 Code Verification
 Ensuring type safety
 Interaction with the OS
 Managing security
• Code access security
 Garbage Collection

The .NET Languages
C#, VB.NET, C++, J#, etc.

.NET Languages
 .NET languages by Microsoft
• C#, VB.NET, Managed C++, J#, F#, JScript
 .NET languages by third parties
• Object
Pascal, Perl, Python, COBOL, Haskell, Oberon
, Scheme, Smalltalk…
 Different languages can be mixed in a single
application

C# Language – Example
 Mixture between C++, Java and Delphi
 C# is standardized by ECMA and ISO
 Example of C# program:
using System;

class NumbersFrom1to100
{
static void Main()
{
for (int i=1; i<=100; i++)
{
Console.WriteLine(i);
}
}
}

.NET framework Security
 The .NET Framework provides several mechanisms for
protecting resources and code from unauthorized code and
users.
 The security architecture of the .NET Framework is
composed of a number of core elements, including:
• Evidence-based security
• Code access security
• The verification process
• Role-based security
• Cryptography
• Application Domains

Visual Studio IDE
Powerful Development Environment for .NET

Visual Studio

 Visual Studio is powerful Integrated Development
Environment (IDE) for .NET Developers
• Create, edit, compile and run .NET applications
• Different languages – C#, C++, VB.NET, J#, …
• Flexible code editor
• Powerful debugger
• Integrated with SQL Server
• Strong support of Web services.

Visual Studio

 Helpful wizards and editors
• Windows Forms Designer
• WCF (Windows Communication Foundation)
• ASP.NET Web Forms Designer
• ADO.NET / LINQ-to-SQL / XML Data Designer

ADO.NET
 ADO.NET is a data access programming model
for accessing the data stored in a database
from a .NET application.
 The ADO.NET object model consists of two
main components-
• data provider
• dataset

ADO.NET

 The Main features of ADO.NET are:

• Disconnected data architecture
• Data cached in datasets
• Scalability
• Data transfer in XML format

ASP.NET
 Platform for building Web applications and Web
services in any .NET language

o C#, C++, VB.NET, JScript, etc.

 Automatic multiple clients support
o DHTML, HTML, small devices . . .

 Multi Device and Multi Browser
 Separation of code and content
o Developers and designers can work independently

ASP.NET Web Forms

 Web Froms:
 Pages that users request through their
browser.
 Combination of HTML, server controls, and
server code.
 Powerful data binding, with great tool
support.
 Easy to start, develop, and deploy

Windows Presentation Foundation(WPF)
WPF is actually a new framework introduced with
.NET framework 3.0 which actually puts forward
a new set of classes and assemblies which allow
us to write programs more efficiently and
flexibly.
WPF controls makes smooth drawing in the form.
Helps in customizing controls and modifying their
behaviors.

Windows Communication Foundation(WCF)

WCF is a unified communication framework
for distributed applications.
WCF defines a common programming model
and unified API for clients and services to
send messages between each other.
WCF is the current and future standard for
distributed .Net applications.

Advantages of .NET Framework

• Consistent programming model.
• Multi-platform application.
• Multi-language integration
• Automatic resource management
• Ease of deployment

For More Details visit following web sites:
.NET Framework Home Site –

http://msdn.microsoft.com/netframework/
The Microsoft .NET Framework Community
http://www.gotdotnet.com/
ASP.NET – http://www.asp.net/
.NET Windows Forms – http://www.windowsforms.net/

Read the news groups:
news://msnews.microsoft.com/microsoft.public.dotnet.fr
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Microsoft dot net framework

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