help to learn basics of .NET

1. Basics of .NET
Gowarthini Bhuvaneshraja

2. Basic concept in .NET
 Common Language Runtime (CLR)
 Base Class Library
 Common Type System (CTS)
 Common Language Specification (CLS)
 Portable Class Library
 Dynamic Language Runtime
 WinRT
 ASP.NET
 Windows Store Apps (Metro Style Apps)
 Desktop Apps (Windows Form Applications)
 ADO.NET

3. What is .NET ?
 The .NET Framework is a software framework for developing and
implementing software for personal computer, web etc.
 It was designed and is maintained by Microsoft Corporation.
 It came out around the year 2000, even though Microsoft started
its development in early 90s.
 .NET is a free, cross-platform, open source developer platform for
building many different types of applications.

4. .NET Framework

5. Common Language Runtime (CLR)
 .NET Framework provides runtime environment called Common
Language Runtime (CLR).
 CLR is runtime execution engine of all .NET programs.
 The code which runs under the CLR is called as Managed Code.
 Programmers need not to worry on managing the memory if the
programs are running under the CLR as it provides memory
management and thread management.
 Language Compilers (e.g. C#, VB.Net, J#) will convert the
Code/Program to Microsoft Intermediate Language (MSIL) intern
this will be converted to Native Code by CLR.

6. Common Language Specification (CLS)
CLS performs the following functions:
 Establishes a framework that helps enable cross-language
integration, type safety, and high performance code execution (i.e),
it helps in cross language inheritance and cross language
debugging.
 Provides an object-oriented model that supports the complete
implementation of many programming languages.
 CLR understand all syntactic rule by help of CLS.

7. Common Type System(CTS)
 CTS is deals with the data types.
 It describes set of data types that can be used in different .NET
languages in common.
 The common type system supports two general categories of types:
* Value types
* Reference types
 CLR can understand all language datatype because it follow the
CTS.

8. Base Class Library (BCL)
 BCL is also called FCL (Framework Class Library).
 Base class library is divided into two part that
* Userdefine Class Library
* Predefine Class Library
 Userdefine Class Library is the way you access the Library Classes
and Methods in VB.NET will be the same in C#, and it is common
for all other languages in .NET.
 Developers just need to import the BCL in their language code and
use its predefined methods

9. Portable Class Library
 The Portable Class Library project enables you to write and build
managed assemblies that work on more than one .NET Framework
platform.
 the Portable Class Library (PCL) allows the targeting of a set of
platforms.
 For example WPF is a Windows application, it's a Desktop based
application.
 All these applications run on the .NET framework but a different
environment and platform but they all can easily use the Portable
Class Library.

10. Dynamic Language Runtime
 The dynamic language runtime (DLR) is a runtime environment
that adds a set of services for dynamic languages to the common
language runtime (CLR).
 The DLR makes it easier to develop dynamic languages to run on
the .NET Framework and to add dynamic features to statically typed
languages.
 Dynamic languages can identify the type of an object at run time,
whereas in statically typed languages such as C# and Visual Basic
you must specify object types at design time.

11. WinRt
 Windows Runtime (WinRT) is a platform-agnostic application
architecture first introduced in Windows 8 and Windows Server
2012 in 2012.
 WinRT supports development in C++/WinRT (standard
C++), C++/CX (Component Extensions, a language based
on C++), JavaScriptTypeScript, and the managedcode
languages C# and Visual Basic .NET (VB.NET)
 WinRT components are designed with interoperability between
multiple languages and APIs in mind, including native, managed
and scripting languages.

12. ASP.NET
 ASP.NET is a part of Microsoft .NET platform.
 ASP.NET is an open-source server-side web
application framework designed for web development to produce
dynamic web pages.
 ASP.NET is built on the Common Language Runtime (CLR),
allowing programmers to write ASP.NET code using any supported
.NET language.
 ASP.NET applications are compiled codes, written using the
extensible and reusable components or objects present in
.NET framework.

13. Windows store Apps (Metro Style Apps)
 Metro style apps are designed to leverage special hardware
capabilities and context information to create an experience that is
tailored for the user.
 Metro style apps are full screen apps tailored to your users’ needs,
tailored to the device they run on, tailored for touch interaction, and
tailored to the Windows user interface.
 Windows helps you interact with your users, and your users interact
with your app. R

14. Desktop Apps (Windows Form Apps)
 An application that runs stand-alone in a desktop or laptop
computer.
 The term may be used to contrast desktop applications with
mobile applications that run in smartphones and tablets.
 Examples of some applications: Windows File Explorer (to find
files on your computer) Microsoft Office applications (Word, Excel,
etc.)

15. ADO .NET
 ADO.NET is a set of computer software components that
programmers can use to access data and data services from a
database
 It is a part of the base class library that is included with the
Microsoft .NET Framework.
 It is commonly used by programmers to access and modify data
stored in relational database systems, though it can also access data
in non-relational data sources.

16. Feature of .NET
 Good design.
 OOP- Object Oriented Programming Language
without class we are not create the single application in .NET.
 Language independent.
 Platform independent.
 Flexible data access.
 Web services.
 Code security(CAS).