1. Microsoft .NET
A platform that can be used for building and running windows and web applications such that the software is platform and device-independent and data are available over the Internet.
.NET framework
.NET Enterprise Servers (windows 200, SQL server, BizTalk)
Visual Studio .NET
Building block services (XML web services)
Win32

2. .NET Framework
Provides the foundation where applications (window or web) and XML web services are built and executed.
Applications and services are developed using common tools and code and are easily integrated to each other.
Common Language Runtime (CLR)
Common Class libraries (CCL)
Infrastructure of the .NET

3. .NET Framework Common Language Runtime Common Class Library
Handles runtime services including:
Common type system
Mapping of data types. Programming language  Framework
Just-in-time (JIT) compilers
JIT compiles intermediary language (MSIL) into native code
Garbage collector
Security
Exception handling …. etc
Common Class Library
Reusable code for common tasks such as web and window forms, data access and XML web services
XML web services: are programmable web components that can be shared among applications on the Internet or intranet
Or:
disributed appliactions that use XML for transferring information between clients, applications and other XML web services.

4. Common Class Library Core System Classes Web forms Windows forms
File I/O
XML
ADO.NET
More classes
Core System Classes

5. Namespaces Namespace: a group of related classes
To make the .NET Class Library easier to work with and understand, it's divided into namespaces.
The root namespace of the .NET Class Library is called System, it contains core classes and data types
The namespace prevents identical names from colliding by maintaining each set of names in a separate space.
To use classes in a namespace, import it
imports System.Web.UI

6. .NET .NET Framework Web Services .NET Applications Enterprise Servers
Office.Net
...
...
.NET Applications
Enterprise Servers
Languages:
C#, Visual Basic, etc
SQL Server
BizTalk
...
Runtime
Common
Type
System
Language
Runtime
Services: .NET and COM+
.NET Framework
Win 32 Operating System

7. Common Language Runtime Diagram
Base Class Library Support
Thread Support
COM Marshaler
Type Checker
Exception Manager
Security Engine
Debug Engine
MSIL to Native
Compilers (JIT)
Code
Manager
Garbage
Collector (GC)
Class Loader

8. .NET Features Language independent Device independent
Any .NET-based language can run on any .NET supported platform
Common language specification (VB.NET, C#, J#, VC++, …)
Microsoft Intermediate Language (MsIL)
Common type system (CTS)
Device independent
XML is accepted by computers, cell phones, PDA,.. Etc.
27 languages

9. Intermediate Language
Language Compilation
Code in VB.NET
Code in C#
Code in J#
VB.NET Compiler
C# Complier
J# Complier
Intermediate Language
Code
CLR Just-in-time
execution

10. .NET Advantages Ease of Use Freedom to Choose: Object-oriented model
Everything is an object
Namespace and Framework structure
Easier to comprehend and use
Naming scheme of namespaces reflects the underlying functionality
Freedom to Choose:
The language that meets your needs
The development tool that is best for you

11. .NET Advantages Stability Security Deployment and Management
No memory leaks
Garbage collection manages memory
Security
Deployment and Management
Web Services (reuse software components that reside on other sites)

12. Visual Studio .NET
A complete development environment where an application or a web service can be designed, developed, debugged and deployed.
Project: A collection of files (items) in an application
Solution: a container for related projects and solution items that can be built into an application
Work on multiple projects within the same instance of the integrated development environment (IDE)
Work on items, settings, and options that apply to the group of projects