.NET Framework is a Microsoft software development platform for building applications on Windows, first released in 2000. It enables the creation of both web-based and Windows applications, emphasizing object-oriented programming and integration with various programming languages through its Common Language Specification and Runtime. The Framework also includes a comprehensive Base Class Library for reusable code and supports multiple programming languages, such as C# and VB.

1. Introduction to .net

2. What is .Net framework?
.Net framework is a software development platform designed by Microsoft.
The framework was meant to create applications, which would run on the
Windows Platform. The first version of the .Net framework was released in
the year 2000.
The version was Named .Net framework 1.0. The .Net framework has
travelled a lot way since then, and the latest version is 4.6.1.
The .Net framework can be used to create both windows based and Web
based applications. Web services can also be enhanced using the .Net
framework.

3. .NET Framework Objective
1. Create a environment for Object Oriented Programming.
2. To create for environment for making Form based application and web based
application .
3. To see to it that coding of .net framework should integrate with every other code

4. .NET Framework
Common Language Specification
(CLR) Common Language Runtime
ADO.NET
C#
VisualStudio2008
ASP.NET
JScript …
Windows
Forms
VB C++
Operating System
Base Class Library

5. .NET Framework contains:
The Common Language Specification (CLS)
It contains set of rules, that language should follow so that they can contact with
other .NET languages. It is also leads for Type matching.
The Framework Base Class Libraries (BCL)
A persistent, object-oriented library of prepacked functionality and Applications.
The Common Language Runtime (CLR)
A language-neutral development & execution environment that provides common
runtime for application run .

6. CLS performs the following functions:
1. Establishes a framework that helps enable cross-language integration, type
safety, and high performance code execution
2. Provides an object-oriented model that supports the complete implementation
many programming languages
3. Defines rules that languages must follow, which helps ensure that objects
in different languages can interact with each other

7. .NET Framework Base Class Library
• The Class Library is a comprehensive, object-oriented collection of reusable types
• These class library can be used to develop applications that include:
– Traditional command-line applications
– Graphical user interface (GUI) applications
– Applications based on the latest innovations provided by ASP.NET
• Web Forms
• XML Web services

8. Common Language Runtime (CLR)
CLR:
1. Common runtime environment for all .NET languages
2. Use Common Type System
3. Memory allocation and Bin collection
4. Intermediate Language to local code compiler. Which Compiles MSIL code
into local executable code
5. Security and inner compilation of the code with other languages
There are over 36 language which are supported here are few:
1. C#, VB, Jscript, Visual C++ from Microsoft
2. Perl, Python, Smalltalk, Cobol, Haskell, Mercury, Eiffel, Oberon, Oz, Pascal,
APL, CAML, Scheme, etc.