.NET is a Microsoft technology for developing and running applications. It was first released in the late 1990s and aimed to provide a consistent programming model for building distributed systems. The .NET Framework provides a common language runtime and class libraries to enable applications to run across platforms and devices. Key components of .NET include the .NET Framework, development tools like Visual Studio, and support for multiple programming languages.

1. Unit 1
Microsoft .Net Technology

2. History
• Late 1990’s – Next generation windows services
(NGWS)
• Late 2000 the first beta versions of .NET 1.0 released
• Version 3.0 of .Net framework is included with
windows server 2008 and windows vista
• Version 3.5 is included with windows 7
• On April 12, 2010 .NET Framework 4 was released
along side Visual Studio 2010
• .NET Micro Framework released for mobile and
embedded devices.

3. History

4. .Net based Web standards
• UDDI : is a standard on which .NET is based in order to
discover and search various Web services.(universal
Description, Discovery and Interoperability)
• SOAP:defines the standard format to be used when
requesting any web service (Simple Object Access
protocols)
• HTTP: Commincation protocol between various
Internet Applications
• XML: Defines the format to be used for exchanging
data between various Internet applications

5. What is .NET?
• It is a new environment for developing and
running software applications
• It provides the framework for an internet-
centric industry standard that makes it
possible to implement a service oriented
architecture by tying together applications,
information and data sources using web
services.

6. What is .NET?
• It enables software to become platform and
device independent
• It employs many standard run time services
available to components written ina variety of
programming languages
• It has inter language and inter machine
operability

7. .Net
• It not a language
• It is not an operating system
• It is not any network device

8. Microsoft Vision
• All devices will some day be connected by a
global broadband network(Internet) and that
software will become service provided over
this network.
• .NET has been applied to everything from next
version of the Windows operating system to
development tools.

9. Problems before .NET
• Registration of COM components: Before
installing any application, COM compoenets
had to be registered, The window registry
becomes more heavy and increase the time of
booting process.

10. Problems before .NET
• Unloading COM components: COM objects
also required a special logic for freeing up the
objects from memory. This method is known
as reference counting of COM objects.
• Circular reference exist between two COM
componets. So deadlock will occur

11. Problems before .NET
• Versioning Problem (DLL hell): DLL would
overwritten when some other applications
were installed on the same computer. It would
refer to wrong DLL. This caused a major
problem when an application was referring to
particular version of a DLL – dynamic link
library

12. .NET Technology
• .Net is the technology from microsoft
• .Net platform:
1. .NET Framework
2. .NET Enterprise Servers
3. .NET Building block services
4. .NET Development Tool (Visual Studio
.NET)

13. .NET Technology

14. Features of .Net Platform
• Single Programming Model
• Distributed Systems
• Richer User Interface
• Support for multiple Languages
• Extendibility
• Portability
• Intergrity

15. .NET Framework
• To provide a consistent object oriented
programming environment
• To provide a code-execution environment that
minimize software deployment and versioning
conflicts
• To provide a code execution environment that
promotes safe execution of code and
eliminates the performance of the problem

16. .NET Framework
• .Net framework provides the necessary
compile time and run time foundation to build
and run .NET based applications
• Two main components
1.Common language runtime
2..NET Framework class library

17. 1.Common language runtime
• Foundation of .Net Framework
• It is an agent that manages code at execution
time and providing services like memory
management, thread management. Also
provide safety and code accuracy.
• Code that targets the runtime is known as
managed code
• Code that does not targets the runtime is
known as unmanaged code

18. 2..NET Framework class library
• Develop applications from traditional
command line or graphical user interface
(GUI) applications such as web forms and
XML web services

19. Visual studio .NET
• Microsoft visual studio is an integrated
development environment (IDE) from Microsoft.
• It helps programmers create standalone
applications, Web applications, Web services and
web sites that run on microsoft windows, smart
devices and the web
• Visual Basic .NET
• Visual C++.NET
• Visual C#. NET
• Visual j#

20. .NET LANGUAGES
• It has the ability to support multiple languages
is one of the primary benefits of the .NET
framework.
• Enterprises can feel confident investing in the
.NET platform
• It supports languages in two different ways
1.native language support (VB.NET, C#.NET,
VC++.NET, J#.NET)
2.non native or third party language