1. .NET Framework
Microsoft's Platform for
Application Development

3.  So what is .NET?
 The .Net
 Microsoft's platform for
software development
 Unified technology for
development of almost
any kind of applications.

4. 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

5. 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

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

7. .Net Framework
Base Class Library
• Object-oriented collection of reusable
types
• Collections, I/O, Strings, …
.NET Framework (Base Class Library)
Common Language Runtime
Operating System

8. .Net Framework
Data Access Layer
• Access relational databases
• Disconnected data model
• Work with XML
ADO .NET and XML
.NET Framework (Base Class Library)
Common Language Runtime
Operating System

9. .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
.NET Framework (Base Class Library)
Common Language Runtime
Operating System

10. .Net Framework
Programming Languages
• Use you favorite language
C++ C# VB.NET Perl J# …
ASP .NET Windows
Web Forms Web Services
Forms
Mobile Internet Toolkit
ADO .NET and XML
.NET Framework (Base Class Library)
Common Language Runtime
Operating System

11. .Net Framework
Common Language Specification
C++ Common Language Specification…
C# VB Perl J#
ASP .NET Windows
Web Forms Web Services
Forms
Mobile Internet Toolkit
ADO .NET and XML
.NET Framework (Base Class Library)
Common Language Runtime
Operating System

12. .Net Framework
Visual Studio .NET
C++ C# VB Perl J# …
Common Language Specification
Visual Studio .NET
ASP .NET Windows
Web Forms Web Services
Forms
Mobile Internet Toolkit
ADO .NET and XML
.NET Framework (Base Class Library)
Common Language Runtime
Operating System

13. Common Language Runtime(CLR)
The Heart of .NET Framework

14. 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.

15. 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

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

17. .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

18. 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);
}
}
}

19. .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

20. Visual Studio IDE
Powerful Development Environment for .NET

21. 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.

22. 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

23. 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

24. ADO.NET
 The Main features of ADO.NET are:
• Disconnected data architecture
• Data cached in datasets
• Scalability
• Data transfer in XML format

25. 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

26. 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

27. 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.

28. 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.

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

30. 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
amework