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Introduction to .NET Web Services The .NET Framework Common Language

Runtime Windows Forms Web Forms ADO.NET Languages

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A vision of how information technology will evolve

A platform that supports the vision A business model of software as a

service

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A vision Web sites will be joined by Web services New smart devices will join the PC User interfaces will become more

adaptable and customizable

Enabled by Web standards

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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”)

Goal: make it incredibly easy to build powerful Web applications and Web services

} The focus of this course

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A business model Software as a service Subscription-based services Application hosting, e.g. bCentral

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Web Form

.NET Framework

Windows

Web Service

.NET FoundationWeb Services

Your InternalWeb Service

Third-PartyWeb Services

.NET EnterpriseServers

Clients Applications

Protocols: HTTP,HTML, XML, SOAP, UDDI

Tools:Visual Studio.NET,

Notepad

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A programmable application component accessible via standard Web protocols

The center of the .NET architecture Exposes functionality over the Web Built on existing and emerging

standards HTTP, XML, SOAP, UDDI, WSDL, …

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Generation 1Static HTML

HTML

Generation 2Web Applications

HTML

HTML, XML

HTML, XML

Generation 3Web Services

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VS .NET VS .NET ProjectProject

Assembly: geom.dll

VB, C#, …VB, C#, … BuildBuild

SQL ServerSQL Server

SQL Data Definition: SQL Data Definition: create create assembly … assembly … create function … create function … create create procedure … procedure … create trigger … create trigger … create create type …type …SQL Queries: SQL Queries:

SELECT name FROM Supplier SELECT name FROM Supplier WHERE Location.Distance ( @point ) < 3WHERE Location.Distance ( @point ) < 3

CLR hosted by SQL (in-proc)

Define Location.Distance()

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 12

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Common Language Specification

Common Language Runtime

VB C++ C#

ASP.NET: Web Servicesand Web Forms

JScript …

WindowsForms

.NET Framework Base Classes

ADO.NET: Data and XML

Visu

al Stu

dio

.NE

T

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System.Data

DesignOLEDB

SQLTypesSQL

System

GlobalizationDiagnostics

ConfigurationCollections

ResourcesReflection

NetIO

ThreadingText

ServiceProcessSecurity Runtime

InteropServicesRemotingSerialization

System.Xml

XPathXSLT Serialization

System.Web

Configuration SessionStateCaching Security

ServicesDescriptionDiscoveryProtocols

UIHtmlControls

WebControlsSystem.Drawing

ImagingDrawing2D

TextPrinting

System.Windows.FormsForm Button

MessageBox ListControl

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Development servicesDeep cross-language interoperabilityIncreased productivity

Deployment servicesSimple, reliable deploymentFewer versioning problems – NO MORE ‘DLL HELL’

Run-time servicesPerformance Scalability Availability

Reliability Security Safety

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Source CodeSource Code

C++, C#, VB or any .NET language

csc.exe or vbc.exe

Compiler

AssemblyAssembly

DLL or EXE

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AssemblyAssemblySource Source CodeCode

Language Language CompilerCompiler

CompilationCompilation

At installation or the first At installation or the first time each method is time each method is

calledcalledExecutionExecution

JIT CompilerJIT CompilerNativeNative

CodeCode

Code (IL)Code (IL)

MetadataMetadata

Assembly Logical unit of deployment Contains Manifest, Metadata, MSIL and

resources Manifest

Metadata about the components in an assembly (version, types, dependencies, etc.)

Type Metadata Completely describes all types defined in

an assembly: properties, methods, arguments, return values, attributes, base classes, …

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Microsoft Intermediate Language (MSIL, IL) All languages compile to IL (managed

code) IL is always compiled to native code before

being executed Resources

E.g. .bmp, .jpg

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CLR

VBSource code

Compiler

C++C#

Assembly AssemblyAssembly

Operating System Services

MSIL

Common Language Runtime JIT Compiler

Compiler Compiler

Nativecode

ManagedCode

ManagedCode

ManagedCode

UnmanagedCode

CLR Services

Ngen

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Code managementConversion 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

Handling exceptions across languages

Interoperation between .NET Framework objects and COM objects and Win32 DLLs

Automation of object layout for late binding

Developer services (profiling, debugging, etc.)

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Common Type System (CTS) A superset of the data types used by most

modern programming languages Common Language Specification (CLS)

A subset of CTS that allows code written in different languages to interoperate

What languages? Microsoft: C++, Visual Basic, C#, JScript Third-Party: Cobol, Eiffel, Smalltalk, Scheme,

Oberon, Haskell, Java, Python, Perl, …

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An application consists of one or more assemblies

How does one assembly bind to another? Based upon metadata and policy

Local (preferred) Assembly Global Cache

Multiple versions of an assembly may exist on the same machine Easier software deployment, updates and

removal Multiple versions of an assembly can even be

used by the same application23

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Evidence-based security (authentication)

Based on user identity and code identity

Configurable policies Imperative and declarative interfaces

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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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Built with ASP.NETLogical evolution of ASPSimilar development model: edit the page and

goRequires less codeNew programming model

Event-driven/server-side controlsRich controls (e.g. data grid, validation)Data bindingControls generate browser-specific codeSimplified handling of page state

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Allows separation of UI and business logic

Uses .NET languages Not just scripting

Easy to use components XCOPY/FTP deployment Simple configuration (XML-based)

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Caching (pages, fragments, custom) Scalable session state management Tracing support ASP.NET is extensible

No ISAPI / ASP dichotomy Automatic process rollover Forms-based authentication

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Similar to ADO, but better factored Language-neutral data access Supports two styles of data access

Disconnected Forward-only, read-only access

Supports data binding DataSet: a collection of tables Can view and process data relationally

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New language created for .NET Safe, productive evolution of C++ Key concepts:

Component-oriented Everything is an object Robust and durable code Preserving your investment

Submitted to ECMA for standardization Uses .NET Framework classes

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Modernizes and simplifies Visual Basic Inheritance Threading Exception handling

Support for late binding Uses .NET Framework classes

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.NET Framework 1.1This is the first major .NET Framework upgrade. It is available on its own as a redistributable package or in a software development kit, and was published on 3 April 2003. It is also part of the second release of Microsoft Visual Studio .NET (released as Visual Studio .NET 2003). This is the first version of the .NET Framework to be included as part of the Windows operating system, shipping with Windows Server 2003. Mainstream support for .NET Framework 1.1 ended on 14 October 2008, and extended support ends on 8 October 2013. Since .NET 1.1 is a component of Windows Server 2003, extended support for .NET 1.1 on Server 2003 will run out with that of the OS – currently 14 July 2015. .NET 1.1 is the last available version for Windows NT 4.0.If .NET Framework 1.0 is removed, installing only .NET Framework 1.1 also provides the system support for version 1.0, except in rare instances where an application will not run because it checks the version number of a library.

.NET Framework 1.1This is the first major .NET Framework upgrade. It is available on its own as a redistributable package or in a software development kit, and was published on 3 April 2003. It is also part of the second release of Microsoft Visual Studio .NET (released as Visual Studio .NET 2003). This is the first version of the .NET Framework to be included as part of the Windows operating system, shipping with Windows Server 2003. Mainstream support for .NET Framework 1.1 ended on 14 October 2008, and extended support ends on 8 October 2013. Since .NET 1.1 is a component of Windows Server 2003, extended support for .NET 1.1 on Server 2003 will run out with that of the OS – currently 14 July 2015. .NET 1.1 is the last available version for Windows NT 4.0.If .NET Framework 1.0 is removed, installing only .NET Framework 1.1 also provides the system support for version 1.0, except in rare instances where an application will not run because it checks the version number of a library.

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.NET Framework 2.0Released with Visual Studio 2005, Microsoft SQL Server 2005, and BizTalk 2006.•The 2.0 Redistributable Package can be downloaded for free from Microsoft, and was• published on 22 January 2006.•The 2.0 Software Development Kit (SDK) can be downloaded for free from Microsoft.•It is included as part of Visual Studio 2005 and Microsoft SQL Server 2005.•Version 2.0 without any Service Pack is the last version with support for Windows 98 •and Windows Me•. Version 2.0 with Service Pack 2 is the last version with official support for •Windows 2000• although there have been• some unofficial workarounds published online to use a subset of the functionality •from Version 3.5• in Windows 2000.[19] Version 2.0• with Service Pack 2 requires Windows 2000 with SP4 plus KB835732 or• KB891861 update,• Windows XP with SP2 or later and •Windows Installer 3.1 (KB893803-v2)•It shipped with Windows Server 2003 R2 (not installed by default).

.NET Framework 2.0Released with Visual Studio 2005, Microsoft SQL Server 2005, and BizTalk 2006.•The 2.0 Redistributable Package can be downloaded for free from Microsoft, and was• published on 22 January 2006.•The 2.0 Software Development Kit (SDK) can be downloaded for free from Microsoft.•It is included as part of Visual Studio 2005 and Microsoft SQL Server 2005.•Version 2.0 without any Service Pack is the last version with support for Windows 98 •and Windows Me•. Version 2.0 with Service Pack 2 is the last version with official support for •Windows 2000• although there have been• some unofficial workarounds published online to use a subset of the functionality •from Version 3.5• in Windows 2000.[19] Version 2.0• with Service Pack 2 requires Windows 2000 with SP4 plus KB835732 or• KB891861 update,• Windows XP with SP2 or later and •Windows Installer 3.1 (KB893803-v2)•It shipped with Windows Server 2003 R2 (not installed by default).

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Changes in 2.0 in comparison with 1.1•Generics•Language support for generics built directly into the .NET CLR.•Full 64-bit support for both the x64 and the IA64 hardware platforms.•Numerous API changes.•SQL Server integration – .NET 2.0, VS 2005, and SQL Server 200•5 are all tied together. This means that instead of using T-SQL, one• can build stored procedures and triggers in any of the .NET-compatible• languages.•A new hosting API for native applications wishing to host an instance• of the .NET runtime. The new API gives a fine grain control on• the behavior of the runtime with regards to multithreading,• memory allocation, assembly loading and more •. It was initially developed to efficiently host the runtime in •Microsoft SQL Server, which implements its own scheduler and memory• manager.

Changes in 2.0 in comparison with 1.1•Generics•Language support for generics built directly into the .NET CLR.•Full 64-bit support for both the x64 and the IA64 hardware platforms.•Numerous API changes.•SQL Server integration – .NET 2.0, VS 2005, and SQL Server 200•5 are all tied together. This means that instead of using T-SQL, one• can build stored procedures and triggers in any of the .NET-compatible• languages.•A new hosting API for native applications wishing to host an instance• of the .NET runtime. The new API gives a fine grain control on• the behavior of the runtime with regards to multithreading,• memory allocation, assembly loading and more •. It was initially developed to efficiently host the runtime in •Microsoft SQL Server, which implements its own scheduler and memory• manager.

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Comparison contd………•Many additional and improved ASP.NET web controls.•New data controls with declarative data binding.•New personalization features for ASP.NET,• such as support for themes, skins, master pages and webparts.•.NET Micro Framework – a version of the .NET Framework •related to the Smart Personal Objects Technology initiative.•Membership provider•Partial classes•Nullable types•Anonymous methods•Iterators•Data tables

Comparison contd………•Many additional and improved ASP.NET web controls.•New data controls with declarative data binding.•New personalization features for ASP.NET,• such as support for themes, skins, master pages and webparts.•.NET Micro Framework – a version of the .NET Framework •related to the Smart Personal Objects Technology initiative.•Membership provider•Partial classes•Nullable types•Anonymous methods•Iterators•Data tables

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Internet Technologies Programming Languages and

Paradigms Programming the Web .NET Overview

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