01 intro to programming in .net

Course Overview
Unit 42: Programming in .NET

Aim
Lecturer: Jareed Eve;2
 To provide learners with an understanding of the
principles of programming using a .NET
framework as an underpinning technological
concept in the fields of programming and systems
development.

Learning Outcomes
1. Understand the principles of programming using
a .NET framework.
2. Be able to design .NET solutions
3. Be able to implement .NET solutions
4. Be able to test and document .NET solutions.

Resources
 Books
 Esposito D – Programming Microsoft ASP.NET
MVC (Microsoft, 2010) ISBN-10: 0735627142
 Libert J, Horovitz A – Programming .NET 3.5
(O’Reilly, 2008) ISBN-10: 059652756X
 Lowy J – Programming .NET Components:
Design and Build .NET Applications Using
Component- Oriented Programming (O’Reilly,
2005) ISBN-10: 0596102070
 Websites
 http://msdn.microsoft.com/en-
gb/library/zw4w595w.aspx
 www.dotnet-guide.com/
 www.programmingtutorials.com/vbnet.aspx

Introduction to
Programming in .NET

Learning Objectives Overview
 What is .NET
 Version History
 Design Features
 .NET Languages

What is .NET
 The .NET Framework is a software framework
developed by Microsoft
 Programs written for the .NET Framework
execute in a software environment, known as the
Common Language Runtime (CLR)
 CRL - An application virtual machine that provides
services such as security, memory management,
and exception handling.
 The class library and the CLR together constitute
the .NET Framework.

 The .NET Framework is an environment for
building, deploying, and running Mobile, Desktop,
Web Applications and Web Services.
 Microsoft's first server technology ASP (Active
Server Pages), was a powerful and flexible
"programming language". But it was too code
oriented. It was not an application framework and
not an enterprise development tool.
 The Microsoft .NET Framework was developed to
solve this problem.
MS .NET Framework

 .NET Frameworks Advantages:
 Easier and quicker programming
 Reduced amount of code
 Declarative programming model
 Richer server control hierarchy with events
 Larger class library
 Better support for development tools
MS .NET Framework

Version History 1
 Microsoft started development of the .NET
Framework in the late 1990s (Next Generation
Windows Services (NGWS)).
 The first beta versions of .NET 1.0 were released
in 2000.
 Version 3.0 of the .NET Framework is included
with Windows Server 2008 and Windows Vista.
 Version 3.5 is included with Windows 7 and
Windows Server 2008 R2, and can also be
installed on Windows XP and Windows Server
2003.[2]
 On 12 April 2010, .NET Framework 4 was
released alongside Visual Studio 2010.

Version History 2

Design Features 1
 Interoperability
 Common Language Runtime engine
 Language independence
 Base Class Library
 Security
 Simplified Deployment
 Portability

Design Features: Interoperability
 Ability of a system to work with or use the parts of
another system
 Because computer systems commonly require
interaction between newer and older applications,
the .NET Framework provides means to access
functionality implemented in newer and older
programs that execute outside the .NET
environment.

Design Features: CLR Engine
 It provides many services such as
 Automatic garbage collection
 Code access security
 Simplified versioning
 Simple and reliable deployment
 Deep cross-language interoperability
 Debugging across different languages
 Performance
 Scalability

Design Features: Language
Independence
 It is possible to use .NET from many
programming languages because they have all
agreed on some standards.
 The Common Type System or CTS is a
specification that defines the different data types
and programming constructs.
 Regardless of where languages come from or
why people choose them, the .NET framework is
a feature rich library that helps with the rapid
development of computer systems.

Design Features: Base Class Library
 A library of functionality available to all languages
using the .NET Framework.
 The BCL provides classes for common functions
 File reading and writing,
 Graphic rendering,
 Database interaction,
 XML document manipulation, etc.
 It consists of classes, interfaces of reusable types
that integrates with CLR(Common
Language Runtime).

Design Features: Simplified
Deployment
 The .NET Framework includes design features
and tools which help manage the installation of
computer software
 It ensures that it does not interfere with previously
installed software
 It conforms to security requirements.

Design Features: Security
 The design addresses some of the vulnerabilities
 Example: buffer overflows, which have been
exploited by malicious software.
 .NET provides a common security model for all
applications

Design Features: Portability
 The framework was designed to be platform-
agnostic, and cross-platform implementations are
available for other operating systems.
 Microsoft submitted the specifications for the
Common Language Infrastructure, the C#
language, and the C++/CLI language to both
ECMA and the ISO, making them available as
official standards.
 This makes it possible for third parties
to create compatible implementations of
the framework and its languages on other
platforms.

.NET Languages
CLI Implementations CLI Implementations
 A#
 C#
 F#
 J#
 L#
 P#
 C++
 Boo
 Cobra
 PowerShell
 PowerBuilder
 JScript .NET
 IronPython
 IronRuby
 Visual Basic
 IronLISP

01 intro to programming in .net

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