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Yoon Joong Kim Department of computer Engineering
Hanbat National University
Yoon joong Kim
Contents
Microsoft .NET History
What is Microsoft .NET
- Goal/.NET Platform/issues and ideas
The Microsoft .NET Framework
Common Language Runtime
- Goal/Concepts/Compilation and execution/Services/Multiple Language
Support
Windows Form/Web Form/C#/ VB.NET
Web Programming
Web Services
Ex.1 An Simple Web Services Example
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Yoon joong Kim
History of .NET Framework
Microsoft started development of the .NET Framework in the
late 1990s, originally under the name of Next Generation
Windows Services (NGWS). By late 2000 the first beta
versions of .NET 1.0 were released.
Version 1.0 of the .NET Framework was released in
February 2002 with visual studio .NET.
Version 3.0 is included with Windows Server 2008 and
Windows Vista.
Version 3.5 with Windows 7 and Windows Server 2008 R2.]
Version 4.0 alongside Visual Studio 2010.
Version 4.5 alongside Visual Studio 2012 for Windows Vista
or later. Support metro style apps for Windows 8.
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Yoon joong Kim
History of .NET Framework
The .NET Framework family includes a reduced version of
the framework the .NET Compact Framework.
the .NET Compact Framework is available on
- the mobile version,
the Windows CE platforms including Windows Mobile
devices such as smartphones.
- the embedded device version,
the .NET Micro Framework that is targeted at severely
resource-constrained devices.
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Yoon joong Kim
History of .NET Framework
Generation Version number Release date Development tool Distributed with
1.0 1.0.3705.0 02002-02-1313 February 2002 Visual Studio .NET N/A
1.1 1.1.4322.573 02003-04-2424 April 2003 Visual Studio .NET
2003 Windows Server 2003
2.0 2.0.50727.42 02005-11-077 November 2005 Visual Studio 2005 Windows Server 2003
R2
3.0 3.0.4506.30 02006-11-066 November 2006 Expression Blend Windows Vista,
Windows Server 2008
3.5 3.5.21022.8 02007-11-1919 November 2007 Visual Studio 2008 Windows 7, Windows
Server 2008 R2
4.0 4.0.30319.1 02010-04-1212 April 2010 Visual Studio 2010 N/A
4.5 4.5.50709.17929 02012-08-1515 August 2012 Visual Studio 2012 Windows 8, Windows
Server 2012
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Yoon joong Kim
History of .NET Framework
WPF(Windows Presentation Foundation)
- a new user interface subsystem and API based on
XML and vector graphics,
WCF(Windows Communication Foundation - a service-oriented messaging system which allows
programs to interoperate locally or remotely similar to
web services.
WF(Windows Workflow Foundation) - allows for building of task automation and integrated
transactions using workflows.
Windows CardSpace, - a software component which securely stores a person's
digital identities and provides a unified interface for
choosing the identity for a particular transaction, such
as logging in to a website
LINQ(Language Integrated Query) - can be used to conveniently extract and process data
from arrays, enumerable classes, XML documents,
relational databases, and third party data sources.
TPL(Task Parallel Library)
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Yoon joong Kim
What is Microsoft .NET
Goal
- .NET is a network platform whose goal is as follow:
the users(application or terminal device) that are connected to each
others on the network regardless of wire or wireless
communicate and transfer their information in the form of XML
from any device, anytime, anywhere. .
- Make it incredibly easy to build powerful web applications and web
services
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Yoon joong Kim
What is Microsoft .NET
Visual Studio .NET
.NET Enterprise
Servers
SQL Server 2005
Win Server 2003
Exchange 2010
.NET Framework
CLR, C#, ASP.NET,
etc.
.NET Services
e.g. Microsoft
Passport(Windows
Live ID)
Operating System e.g. Windows XP, Windows 2000, Linux
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The Microsoft .NET Platform
Yoon joong Kim
What is Microsoft .NET?
A platform
- The .NET Framework
- Visual Studio.NET
- .NET Enterprise Servers
- Database, messaging, integration, commerce, proxy, security, mobility,
orchestration, content management
- .NET Building Block Services
- Passport
- .NET My Services(“Hailstorm”)
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} The focus of
this program
Yoon joong Kim
What is Microsoft .NET?
that new language C# Microsoft putting XML into
everything
the next version of Visual
Basic the next version of ASP
the next version of
Visual Studio Microsoft trying to kill
Java
being able to run everything
across the Net
it’s a good thing
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Yoon joong Kim
What is Microsoft .NET?
Initially announced as the latest release of everything Microsoft - ASP.NET, VB.NET, C#.NET, VisualStudio.NET
With some big ideas - the new language C#, Object-Orient Language
- got rid of VB at last
- the Common Language Runtime (CLR) - platform independent c.f. JRE
- language integration - shared libraries ->language independent
- ability to develop and use software components over the web - XML based Web Services
- simplified deployment of Windows software - Simple copy of assembly EXE or DLL without any register editing
=> the end of DLL hell - http://en.wikipedia.org/wiki/DLL_Hell
- Assembly format includes its information(self-description)
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Yoon joong Kim
What is Microsoft .NET?
With some big ideas(cont.) - no more mixing HTML and script code in ASP
- Representation page and business logic page
- Data Access - work with RDBMS through the ADO.NET.
- Support XML and interoperate in any platform besides Windows
- http://cafe.naver.com/makkolli/209
- Web Services - Web Component
- Easy to create and use it
- NET depends on - four internet standards : HTTP, XML, SOAP, UDDI.
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Yoon joong Kim
The .NET Framework What Is the .NET Framework?
A set of technologies for developing and using components to create: - web forms
- web services
- windows applications
Supports the software lifecycle - development
- debugging
- deployment
- maintenance
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Yoon joong Kim
Library classes for accessing data and XML
(ADO.NET, SQL, XML, XSLT, LINQ)
XML based
Web Services
Web Forms
ASP.NET
Windows
Forms
Library Framework Base classes
(IO, string, collections, security)
Common Language Runtime
The Microsoft .NET Framework
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Yoon joong Kim
Library classes for accessing data and XML
(ADO.NET, SQL, XML, XSLT, LINQ)
XML based
Web Services
Web Forms
ASP.NET
Windows
Forms
Library Framework Base classes
(IO, string, collections, security)
Common Language Runtime
The Microsoft .NET Framework
The .NET Framework and Visual Studio.NET
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VB C++ C# JScript …
Common Language Specification Vis
ual S
tud
io.N
ET
Yoon joong Kim
The Microsoft .NET Framework .NET Framework Classes
System.Data
Design
OLEDB
SQLTypes
SQL
System
Globalization
Diagnostics
Configuration
Collections
Resources
Reflection
Net
IO
Threading
Text
ServiceProcess
Security Runtime InteropServices
Remoting
Serialization
System.Xml
XPath
XSLT Serialization
System.Web
Configuration SessionState
Caching Security
Services Description
Discovery
Protocols
UI HtmlControls
WebControls
System.Drawing
Imaging
Drawing2D
Text
Printing
System.Windows.Forms
Form Button
MessageBox ListControl
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Yoon joong Kim
Common Language Runtime Goal
Development services
- Deep cross-language interoperability
- Increased productivity
Deployment services
- Simple, reliable deployment – assembly format
- Fewer versioning problems – NO MORE ‘DLL HELL’
Run-trim services
- Performance
- Scalability
- Availability
- Reliability
- Security
- safety
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Yoon joong Kim
Common Language Runtime
Programs can run on any platform for which the CLR has been implemented - just like the JVM
CLR gives language integration - a class written in one language can be used by a class written in
another
- share exactly the same libraries
The CLR is no longer only available for Microsoft operating systems - CLR for the .NET framework
- Mono Project for the Linux and BSD-based OS and MAC OS X.
- Portable.NET
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Yoon joong Kim
Source Code
C++, C#, VB or any
.NET language
csc.exe or vbc.exe
Compiler
Assembly
DLL or EXE
Common Language Runtime Compilation
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Yoon joong Kim
Common Language Runtime Execution Model
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CLR
VB Source
code Compiler
C++ C#
Assembly Assembly Assembly
Operating System Services
MSIL
Common Language Runtime JIT Compiler
Compiler Compiler
Native
code Managed
Code
Managed
Code
Managed
Code
Unmanaged
Code
CLR Services:Loads and executes code, garbage collects etc
Ngen
like Java bytecode
(.exe or .dll)
Yoon joong Kim
Common Language Runtime Services
Code management
Conversion of MSIL to native code
Loading and execution of
managed code
Creation and management of
metadata
Verification of type safety
Insertion and execution of security
checks
Memory management and
isolation
Garbage collection
Handling exceptions across
languages
Interoperation between .NET
Framework objects, COM objects
and Win32 DLLs
Automation of object layout for late
binding
Developer services (profiling,
debugging, etc.)
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Yoon joong Kim
Common Language Runtime Multiple Language Support
Common Type System(CTS)
- Superset of the data types used by most modern programming
languages
Common Language Specification(CLS)
- Subset of CTS that allows code written in different languages to
interoperate
What languages?
- Microsoft – C#, C++, VB.NET, Jscript
- Third party
- Perl, Ada, Cobol, Java, Fortran, Delphi
- Eiffel, Smalltalk, Scheme, Oberon, Haskell, Python, …
- Only practical if the language supports some sort of encapsulation
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Yoon joong Kim
Common Language Runtime Multiple Language Support
Common Language
Infrastructure(CLI)
- The purpose of CLI is to provide
language-neutral platform
- The CLI code is housed in CLI
assemblies(dll, exe)
- the CLI specification describes
the following four aspects:
- CTS(Common Type System)
- Metadata ( code in CIL)
- CLS(Common Language
Specification)
- VLS(Virtual Execution System)
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Yoon joong Kim
Common Language Runtime Multiple Language Support
CLI Language
- CLI language is language that conforms the CLI specifications
- Common Intermediate Language(CIL)
- Is a target language to be compiled by CIL language
- Assembly
CLI implementation
- Such as CLR(Common Language Run), MONO, Portable NET
- Can execute CIL languages
Common CLI languages
- A#(Ada), Boo(Python), C#, Java, Delphi, C++, Corba, Component
Pascal, Eiffel, F#, IronPhython, IronRuby, IronLips, J#, Jscript,
P#(Prolog), VB.NET…
- http://en.wikipedia.org/wiki/List_of_CLI_languages
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Yoon joong Kim
Windows Forms
Framework for building
“rich clients”
Built upon .NET Framework,
languages
Rapid Application
Development (RAD)
Visual inheritance
Anchoring and docking
Rich set of controls
Extensible controls
Data-aware
Easily hooked into
Web Services
ActiveX support
Licensing support
Printing support
Advanced graphics
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Yoon joong Kim
Web Forms
Built with ASP.NET
- Logical evolution of ASP
New programming model
- Event-driven/server-side controls
- Rich controls(e.g. data grid, validation)
- Data binding
- Controls generate browser-specific code
- Simplified handling of page state
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Yoon joong Kim
Web Forms
Allows separation of UI and code
- Separation of concerns is a good thing
- Cleaner, more maintainable code
Uses .NET languages
- C#
- Not just scripting
Components
- Is easy to create and use
XCOPY/FTP deployment
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Yoon joong Kim
Web Forms
Caching(pages, fragments, custom)
Scalable session state management
Tracing support
ASP.NET is extensible
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Yoon joong Kim
Language C#
New language created for .NET
Safe, productive evolution of C++
- No the pointers
Key concepts
- Component-oriented
- Everything is an object
- Robust and durable code
- Preserving your investment
- Whatever that means
Standard language
- Approved as standard by ECMA(ECMA-344) and ISO(ISO/IEC 23270.2006)
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Yoon joong Kim
Languaes Visual Basic.NET
Modernizes and simplifies Visual Basic
- A modernized version of Visual Basic
Now provides
- Inheritance
- Threading
- Exception handling
- Support for late biding
- Whatever that is
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Yoon joong Kim
The Web Programming Server-Client and 3 Tier architecture
Web Server)
(Apache, IIS)
(ASP,JSP,PHP)
Web Server
Browser
(IE, FireFox,
Opera)
(HTML)
Client
(PC or MAC)
Database
Database
Server
SQL HTTP
vision
touch
voice
Presentation Layer
Application Layer
Persistence Layer
Client Server
Web
Network
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Yoon joong Kim
Programming the Web Server-Side Code
What is server-side code? - Software that runs on the server, not on the client
- Receives input from
- URL parameters
- HTML form data
- Cookies
- HTTP headers
- Can access server-side databases, e-mail servers, files, mainframes, etc.
- Dynamically builds a customized HTML document response for a client
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Yoon joong Kim
Programming the Web Server-Side Code
Why server-side code? - Availability
- You can reach the Internet from any browser, any device, any time, anywhere
- Manageability
- Does not require distribution of application code
- Easy to change code
- Security
- Source code is not exposed
- Once user is authenticated, can only allow certain actions
- Scalability
- Web-based 3-tier architecture can scale out
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Yoon joong Kim
Programming the Web Server-Side Technologies
Common Gateway Interface (CGI) (Script) - not language specific - http://en.wikipedia.org/wiki/Common_Gateway_Interface
Internet Server API (ISAPI) - MS IIS’s API, Apache’s API m_isapi - Netscape Server API (NSAPI)
Active Server Pages (ASP) - now obsolete
Java Server Pages (JSP)
PHP Hypertext Processor (PHP)
ColdFusion Markup Language(CFML) - Scripting Language for the JVM, the .NET framework, Google App
Engine.
- http://en.wikipedia.org/wiki/CFML
ASP.NET
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Yoon joong Kim
Programming the Web Active Server Pages(ASP)
Technology to easily create server-side applications - A complete rip-off of the good work of Rasmus Lerdorf
ASP pages are written in a scripting language
- usually VBScript but also Jscript or PerlScript
An ASP page contains static HTML
ASP script is (was) commonly used to access and update a database. - 3-tier systems
UI page and Code page in ASP.NET
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Yoon joong Kim
Programming the Web in ASP.NET
HTTP request (form data, HTTP
header data)
HTTP response HTML, XML
ASP page (static HTML +
server-side logic)
ASP page in .NET
UI Page (static HTML ) +
Code Page
(server-side logic)
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Yoon joong Kim
Web Services
A programmable application software component - allow remote access to software components
- via standard web protocols HTTP, XML, SOAP, UDDI, WSDL
- exposes functionality over the Web
Using ASP.NET framework - can create Web Services that others can use
- can write a program that uses the Web Services
With some properties - The idea of Web Services is not exclusive to Microsoft
- Standard technology
- The center of the .NET architecture
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Yoon joong Kim
Web Services Evolution of the Web
Generation 2
Web Applications
HTML
Generation 1
Static HTML
HTML
HTML, XML
Generation 3
Web Services
XML
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Yoon joong Kim
An simple Web Services
Ex1. An simple Web Services - HelloWorld
- 1.1 Generation of Web Service : int Add(int a, int b) using ASP.NET
- 1.2 Web Service Client using objects of HttpRequest
- 1.3 Web Service Client with proxy using .NET
Environment
- OS : Window 7
- Framework : .NET 3.5
- Tool : Visual Studio 2010
- Language : C#
- Browser : Internet Explorer 9
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Yoon joong Kim
More Resources
.NET - http://www.microsoft.com/net/
- http://msdn.microsoft.com/net/
- http://en.wikipedia.org/wiki/Microsoft_.NET
- http://www.asp.net/
XML - http://www.w3.org/XML/
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