DEV200 DEV200

.NET Framework Overview.NET Framework Overview

Chris AndersonChris AndersonSoftware Architect, .NET ClientSoftware Architect, .NET ClientMicrosoft CorporationMicrosoft Corporation

.NET Framework .NET Framework Design GoalsDesign Goals

Dramatically simplifies development Dramatically simplifies development and deploymentand deployment

Unifies programming modelsUnifies programming models Provides robust and secure execution Provides robust and secure execution

environmentenvironment Supports multiple programming Supports multiple programming

languageslanguages

Framework, Languages, Framework, Languages, And ToolsAnd Tools

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

Base Class LibraryBase Class Library

ADO.NET and XMLADO.NET and XML

ASP.NETASP.NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

Common Language SpecificationCommon Language Specification

VBVB C++C++ C#C# JScriptJScript J#J#

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One Lap Around .NETOne Lap Around .NET

demodemo

Demo: One Lap Around .NETDemo: One Lap Around .NET

Create a simple Web ServiceCreate a simple Web Service Test it in Internet ExplorerTest it in Internet Explorer Add data logic to itAdd data logic to it Build a smart client for itBuild a smart client for it Show seamless and safe deployment Show seamless and safe deployment

of the smart clientof the smart client

Framework, Languages, And ToolsFramework, Languages, And Tools

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

Base Class LibraryBase Class Library

ADO.NET and XMLADO.NET and XML

ASP.NETASP.NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

Common Language SpecificationCommon Language Specification

VBVB C++C++ C#C# JScriptJScript J#J#V

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The .NET EvolutionThe .NET Evolution

Before COM, applications were Before COM, applications were completely separate entities completely separate entities with little or no integrationwith little or no integration

ApplicatioApplicationn

Code and Code and data data

structuresstructures

The .NET EvolutionThe .NET Evolution

COM provides a way for COM provides a way for components to integrate; components to integrate; However, each However, each component must provide component must provide the “plumbing” and the “plumbing” and objects cannot objects cannot directly interactdirectly interact

The .NET EvolutionThe .NET Evolution

With the .NET Framework With the .NET Framework common language runtime, common language runtime, components are built on a components are built on a common substrate; No common substrate; No “plumbing” is needed and “plumbing” is needed and objects can directly interactobjects can directly interact

AssemblyAssembly

Compilation And ExecutionCompilation And Execution

Source Source CodeCode

Language Language CompilerCompiler

CompilationCompilation

At installation or the At installation or the first time each first time each

method is calledmethod is calledExecutionExecution

JIT JIT CompilerCompiler

NativeNative

CodeCode

Code (IL)Code (IL)

MetadataMetadata

Simplify DevelopmentSimplify Development

Completely eliminates COM plumbingCompletely eliminates COM plumbing No more…No more…

RegistrationRegistration GUIDsGUIDs .IDL files.IDL files HRESULTsHRESULTs IUnknownIUnknown AddRef/ReleaseAddRef/Release CoCreateInstanceCoCreateInstance

=>self described apps=>self described apps

=>hierarchical namespaces=>hierarchical namespaces

=>unified object model=>unified object model

=>structured exceptions=>structured exceptions

=>common root object=>common root object

=>garbage collector=>garbage collector

=>”new” operator=>”new” operator

Simplify DevelopmentSimplify Development

Common Type SystemCommon Type System Common instance and type definitionCommon instance and type definition

Enables clean OO programmingEnables clean OO programming Classes and interfacesClasses and interfaces Constructors, properties, methods, eventsConstructors, properties, methods, events Cross language inheritanceCross language inheritance

Built-in interoperabilityBuilt-in interoperability With COMWith COM With native (Win32With native (Win32®® style) DLLs style) DLLs

Everything Is An ObjectEverything Is An Object

Traditional views of primitive typesTraditional views of primitive types C++, JavaC++, Java™™: They’re “magic”: They’re “magic” Smalltalk, Lisp: They’re full-blown objectsSmalltalk, Lisp: They’re full-blown objects

.NET Framework solution: Value types.NET Framework solution: Value types unifies with no performance costunifies with no performance cost Deep simplicity throughout systemDeep simplicity throughout system

Improved extensibility and reusabilityImproved extensibility and reusability New primitive types: Decimal, SQL…New primitive types: Decimal, SQL… Collections, etc., work for all typesCollections, etc., work for all types

Everything Is An ObjectEverything Is An Object

BoxingBoxing Allocates box, copies value into itAllocates box, copies value into it

UnboxingUnboxing Checks type of box, copies value outChecks type of box, copies value out

Dim i As Integer = 123Dim i As Integer = 123Dim o As Object = iDim o As Object = iDim j As Integer = CInt(o)Dim j As Integer = CInt(o)

123123i

o

123123

System.Int32System.Int32

123123j

int i = 123;int i = 123;object o = i;object o = i;int j = (int)o;int j = (int)o;

Robust EnvironmentRobust Environment

Automatic lifetime managementAutomatic lifetime management All objects are garbage collectedAll objects are garbage collected

Exception handlingException handling Error handling first class and mandatoryError handling first class and mandatory

Type-safetyType-safety No buffer overruns, No unsafe casts, No buffer overruns, No unsafe casts,

Uninitialized variablesUninitialized variables

Secure EnvironmentSecure Environment

Security designed-in Security designed-in Code access security enforcement Code access security enforcement

Security based on the identity of code Security based on the identity of code Administratively configurable via policyAdministratively configurable via policy

ASP.NET integrated authentication ASP.NET integrated authentication of user of user Windows identity, PassportWindows identity, Passport®®, forms-based, … , forms-based, …

Cryptography library with XML Cryptography library with XML DSIG support DSIG support Digital signature for XML (Digital signature for XML (

www.w3.org/signaturewww.w3.org/signature) )

Simplify Deployment Simplify Deployment And ManagementAnd Management Zero-impact installZero-impact install

Applications and components can be Applications and components can be shared or privateshared or private

Side-by-side executionSide-by-side execution Multiple versions of the same component Multiple versions of the same component

can co-exist on a systemcan co-exist on a system

Assemblies Assemblies Contain dependency informationContain dependency information

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

Base Class LibraryBase Class Library

ADO.NET and XMLADO.NET and XML

ASP.NETASP.NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

Common Language SpecificationCommon Language Specification

VBVB C++C++ C#C# JScriptJScript J#J#V

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Framework, Languages, And ToolsFramework, Languages, And Tools

Unify Programming ModelsUnify Programming Models

Windows APIWindows API

.NET Framework.NET Framework

Consistent API availability regardless ofConsistent API availability regardless oflanguage and programming modellanguage and programming model

ASPASP

Stateless,Stateless,Code embeddedCode embeddedin HTML pagesin HTML pages

MFC/ATLMFC/ATL

Subclassing,Subclassing,Power,Power,

ExpressivenessExpressiveness

VB FormsVB Forms

RAD,RAD,Composition,Composition,

DelegationDelegation

How Much Simpler?How Much Simpler?

Windows APIWindows APIHWND hwndMain = CreateWindowEx(HWND hwndMain = CreateWindowEx( 0, "MainWClass", "Main Window",0, "MainWClass", "Main Window", WS_OVERLAPPEDWINDOW | WS_HSCROLL | WS_VSCROLL,WS_OVERLAPPEDWINDOW | WS_HSCROLL | WS_VSCROLL, CW_USEDEFAULT, CW_USEDEFAULT,CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,CW_USEDEFAULT, CW_USEDEFAULT, (HWND)NULL, (HMENU)NULL, hInstance, NULL); (HWND)NULL, (HMENU)NULL, hInstance, NULL); ShowWindow(hwndMain, SW_SHOWDEFAULT); ShowWindow(hwndMain, SW_SHOWDEFAULT); UpdateWindow(hwndMain);UpdateWindow(hwndMain);

.NET Framework.NET Framework

Dim Dim form form As NewAs New Form() Form()form.Text = "Main Window"form.Text = "Main Window"form.Show()form.Show()

Factored And ExtensibleFactored And Extensible

The Framework is not a “black box”The Framework is not a “black box” Any .NET class is available for you to Any .NET class is available for you to

extend through inheritanceextend through inheritance Gives developers much more head roomGives developers much more head room

Plug and Play components Plug and Play components and subsystemsand subsystems

The .NET Framework LibraryThe .NET Framework Library

Base Class LibraryBase Class Library

ADO.NET and XMLADO.NET and XML

Web Forms Web ServicesWeb Forms Web ServicesMobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

ASP.NETASP.NET

System System

System.DataSystem.Data System.XmlSystem.Xml

System.WebSystem.Web

GlobalizationGlobalization

DiagnosticsDiagnostics

ConfigurationConfiguration

CollectionsCollections

ResourcesResources

ReflectionReflection

NetNet

IOIO

ThreadingThreading

TextText

ServiceProcessServiceProcess

SecuritySecurity

CommonCommon

OleDbOleDb

SQLTypesSQLTypes

SqlClientSqlClient

XPathXPath

XSLTXSLT

RuntimeRuntimeInteropServicesInteropServices

RemotingRemoting

SerializationSerialization

SerializationSerialization

ConfigurationConfiguration SessionStateSessionState

CachingCaching SecuritySecurity

ServicesServicesDescriptionDescription

DiscoveryDiscovery

ProtocolsProtocols

UIUIHtmlControlsHtmlControls

WebControlsWebControls

System.DrawingSystem.Drawing

ImagingImaging

Drawing2DDrawing2D

TextText

PrintingPrinting

System.Windows.FormsSystem.Windows.Forms

DesignDesign ComponentModelComponentModel

The .NET Framework LibraryThe .NET Framework Library

Base FrameworkBase FrameworkSystemSystem

ThreadingThreading

TextText

ServiceProcessServiceProcess

SecuritySecurity

ResourcesResources

ReflectionReflection

NetNet

IOIO

GlobalizationGlobalization

DiagnosticsDiagnostics

ConfigurationConfiguration

CollectionsCollections

RuntimeRuntime

SerializationSerialization

RemotingRemoting

InteropServicesInteropServices

Data And XMLData And XMLSystem.DataSystem.Data

System.XmlSystem.Xml

SQLTypesSQLTypes

SQLClientSQLClient

CommonCommon

OleDbOleDb

SerializationSerialization

XPathXPath

XSLTXSLT

ASP.NETASP.NET

System.WebSystem.Web

CachingCaching

ConfigurationConfiguration

ServicesServices UIUI

SessionStateSessionState

HtmlControlsHtmlControls

WebControlsWebControls

DescriptionDescription

DiscoveryDiscovery

SecuritySecurity

ProtocolsProtocols

WindowsWindows®® Forms Forms

System.DrawingSystem.Drawing

Drawing2DDrawing2D

ImagingImaging

PrintingPrinting

TextText

System.Windows.FormsSystem.Windows.Forms

DesignDesign ComponentModelComponentModel

Operating SystemOperating System

Common Language RuntimeCommon Language Runtime

Base Class LibraryBase Class Library

ADO.NET and XMLADO.NET and XML

ASP.NETASP.NETWeb Forms Web ServicesWeb Forms Web Services

Mobile Internet ToolkitMobile Internet Toolkit

WindowsWindowsFormsForms

Common Language SpecificationCommon Language Specification

VBVB C++C++ C#C# JScriptJScript J#J#V

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Framework, Languages, And ToolsFramework, Languages, And Tools

LanguagesLanguages

The .NET Platform is language neutralThe .NET Platform is language neutral All .NET languages are first class playersAll .NET languages are first class players You can leverage your existing skillsYou can leverage your existing skills

Common language specificationCommon language specification Set of features guaranteed to be in all languagesSet of features guaranteed to be in all languages

We are providingWe are providing Visual BasicVisual Basic®®, C++, C#, J#, JScript, C++, C#, J#, JScript®®

Third-parties are buildingThird-parties are building APL, COBOL, Delphi, Pascal, Eiffel, Haskell, ML, APL, COBOL, Delphi, Pascal, Eiffel, Haskell, ML,

Oberon, Perl, Python, Scheme, Smalltalk…Oberon, Perl, Python, Scheme, Smalltalk…

StandardizationStandardization

A subset of the .NET Framework and A subset of the .NET Framework and C# submitted to ECMAC# submitted to ECMA Adopted as International standards in Adopted as International standards in

Dec. 2001Dec. 2001 In the ISO fast-track process nowIn the ISO fast-track process now Co-sponsored with Intel, Hewlett-PackardCo-sponsored with Intel, Hewlett-Packard

Common language infrastructureCommon language infrastructure Based on common language runtime and Based on common language runtime and

base frameworkbase framework Layered into increasing levels Layered into increasing levels

of functionalityof functionality

Additional ResourcesAdditional Resources

Learn about Web development with .NETLearn about Web development with .NET DEV334: Introduction to Web FormsDEV334: Introduction to Web Forms

Learn about client development with .NETLearn about client development with .NET DEV350: Building Smart Client ApplicationsDEV350: Building Smart Client Applications

Learn about Network class libraries Learn about Network class libraries DEV342: The .NET Framework Net Class LibrariesDEV342: The .NET Framework Net Class Libraries

Get the Deep Technical Drill Down Get the Deep Technical Drill Down DEV366: .NET Framework Under the HoodDEV366: .NET Framework Under the Hood

Learn how to Architect an applicationLearn how to Architect an application DEV310: Architecting Enterprise Applications with DEV310: Architecting Enterprise Applications with

Visual Studio .NETVisual Studio .NET DEV358: Architecting N-Tier .NET ApplicationsDEV358: Architecting N-Tier .NET Applications DEV402: Design Choices for Implementing Distributed DEV402: Design Choices for Implementing Distributed

Applications in .NETApplications in .NET

SummarySummary

The .NET FrameworkThe .NET Framework Dramatically simplifies development Dramatically simplifies development

and deploymentand deployment Unifies programming modelsUnifies programming models Provides robust and secure execution Provides robust and secure execution

environmentenvironment Supports multiple programming Supports multiple programming

languageslanguages

DiscussionDiscussion

Resources from Microsoft PressResources from Microsoft Press

For more information please visit the TechEd Bookshop.For more information please visit the TechEd Bookshop.www.microsoft.com/mspresswww.microsoft.com/mspress

MICROSOFT .NET FRAMEWORK

Don’t forget to complete the Don’t forget to complete the on-line Session Feedback form on-line Session Feedback form on the Attendee Web siteon the Attendee Web site

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