The .NET framework allows developers to create applications for web, desktop, and mobile in various languages on Microsoft's platform. It utilizes a common language runtime (CLR) and class libraries to provide language interoperability. Key aspects include Windows Forms for desktop apps, ASP.NET for web apps, and ADO.NET for data access. The framework has evolved over time with new versions adding capabilities like WPF, WCF, LINQ, and parallel programming. It aims to simplify development while providing a robust and secure environment for building applications.

1. Overview of Microsoft
.NET Frameworks

2. .NET – What Is It?
 It’s a Software platform
 It’s Language neutral
 In other words:
 .NET is not a language (It’s runtime
environment and a library of classes
(Assemblies) for writing and executing programs
in any compatible language)

3. What Is .NET
 .Net is a framework for developing web-based
and windows-based applications within the
Microsoft environment.
 The .Net framework has moved application
development paradigm from client-centric to
server-centric.

4. Base Class Library
Common Language Specification
Common Language Runtime
ADO.NET: Data and XML
VB VC++VC#
ASP.NET: Web Services
and Web Forms
JScript Etc…
Windows
Forms
Framework, Languages, And Tools

5. The .NET Framework The Evolution
2.0
(2005)
• Common Language Runtime
• Base Class Library
• WinForms, Asp.net, ADO.NET
3.0
(2006)
• WPF
• WCF
• WF
• Card Space
3.5
(2008)
• LINQ
• ADO.Net entity Framework
4.0
(2010)
• Parallel LINQ
• Task Parallel Library
4.5
(2012)
• Modern UI Runtime
• Task based Async. Model

6. Common Language Runtime
(CLR)
CLR works like a virtual machine in executing all
languages.
All .NET languages must obey the rules and
standards imposed by CLR. Examples:
 Object declaration, creation and use
 Data types, language libraries
 Error and exception handling
 Etc…

7. Common Language Runtime
 Development
 Mixed language applications
 Common Language Specification (CLS)
 Common Type System (CTS)
 Standard class framework
 Automatic memory management
 Consistent error handling and safer execution
 Potentially multi-platform
 Primary important things of CLR
 Garbage connection.
 CAS (Code Access Security)
 CV (Code verification)
 IL to native code translation

8. Compilation in .NET

9. Intermediate Language (IL)
 .NET languages are not compiled directly to
machine code. They are compiled to an
Intermediate Language (IL) by respective
language compiler.
 CLR gets the IL code and recompiles it to
machine code. The recompilation happens in
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.

10. Languages
 Languages provided by Microsoft
 VB, C++, C#, J#, Jscript, F#
 Third-parties are building
 APL, COBOL, Pascal, Eiffel, Haskell, ML,
Oberon, Perl, Python, Scheme, Smalltalk……..

11. .NET Supported Languages
C
C#
C++
Caml
CAT
CAT (Christopher Diggins)
Java
JavaScript
Lexico
LISP
DotLisp (Rich Hickey)
L# (L Sharp .NET) - LISP-based script
language
FOIL - (Rich Hickey and Eric Thorsen)
RDNZL - .NET Layer for Common Lisp
(Edi Weitz)
LOGO
IL/MSIL
MSIL (Microsoft)
ilasm (IL Assembler Microsoft)
ilasm (Mono/Ximian)
Portable.NET Assembler
Lua
Mercury
Mixal Assembly Language
Modula-2
GPM/CLR (Queensland University of
Technology)
Mondrian
COBOL
CULE
Eiffel
Forth
Scheme
Smalltalk
SML
Synergy
Tcl/Tk
Visual Bas
FORTRAN
Haskell
Oberon
Nemerle
Pan
Perl
Pascal variants:
Delphi (Borland)
PHP
Ada
APL
Dyalog APL (Dyalog Ltd)
AsmL
BETA
Boo
Prolog
Python
IronPython (Microsoft)
Ruby
RPG
Scala
ic
Visual Basic.NET (Microsoft)
And Counting…

12. Windows Forms
 .Net Framework is for Building Rich Clients
RAD (Rapid Application Development)
Rich set of controls
Data bound aware
ActiveX® Support
Printing support
Unicode support
UI inheritance
Easy deployment
Rapid learning curve. A software professional can
be quickly trained in suitable .net compatible
language & deployed in development.

13. ASP.NET
ASP.NET,the platform services that allow to program
Web Applications and Web Services in any .NET
language
ASP.NET Uses .NET languages to generate HTML
pages. HTML page is targeted to the capabilities of the
requesting Browser
ASP.NET “Program” is compiled into a .NET class and
cached the first time it is called. All subsequent calls
use the cached version.

14. ASP.NET
 Logical Evolution of ASP
Supports multiple languages
Improved performance
Control-based, event-driven execution model
More productive
Web server (Mostly Windows based server) need
run time (.Net framework) no client side installation
needed for running asp.net application. Just a
suitable web browser need to access asp.net
application.

15. Web Services
 A technical definition
“A programmable application component accessible
via standard Web protocols”
 It is just an application that exposes its features
and capabilities over the network using XML.
 Any compatible development environment can
consume the web service.

16. ADO.NET (Data and XML)
 New objects (e.g., DataSets)
 Language neutral data access
 Uses same types as CLR.
 Six important components are
 Connection,
 Command,
 Data Reader,
 Dataset Object,
 Data Adapter,
 Data View.

17. Summary
 The .NET Framework
Dramatically simplifies development and
deployment process as well as time for the same.
Provides robust and secure execution environment
for application development for all type of
application i.e. desktop, web, mobile, cloud etc…
Small learning curve. Developers from other
environments can seamlessly transfer to .net
technologies.

18. Thank You
- A presentation by Abhijit B.