.NET Vision Demystifying Microsoft .NET

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.NET VisionDemystifying Microsoft .NET

• Ed Sullivan

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What is .NET??

• .NET provides the following services
• Run-time environment that makes programmers life
  easier.
• New opportunities for code reuse(much better than
  COM)
• Better Memory Management
• .Net Enables Web Services

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What Is A Web Service?

• Furthermore
• Web Services will be categorized in a directory -
  UDDI
• Developer tools will be able to locate and use
  Web Services
• Web Services will be defined in terms of the
  formats and ordering of messages
• Web Service consumers will be able to send and
  receive messages using XML
• All these capabilities will be built using
  standard Web protocols

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Example of a Web Service

• Public class myclass
• public string GetString()
• return This is what you want,
• this is what you get.
• Using System.Web.Services
• Public class myclass
• WebMethod(DescriptionGet a string value)
• public string GetString()
• return This is what you want,
• this is what you get.

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A Platform for Web Services
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.NET Framework OverviewWhat is the .NET Framework
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.NET Framework Overview.NET Framework
Different Languages
VB
C
Compile
Same IL
MSIL
MSIL
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.NET Framework Overview.NET Framework
VB
MSIL
Deploy
Execute
Machine Code
MSIL
JIT Compile
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XML and the SOAP Family
XML is Lingua Franca of the Internet Simple,
open, broadly adopted Universal data exchange
Powerful distributed apps Impacts software
evolution
Visual Studio .NET

• SOAP XML interoperability protocol
• Web Services Description Language Describes Web
  service capabilities
• SOAP Discovery Enables tools to locate Web
  services
• Universal Description, Design, and Integration
  (UDDI) Provides a directory of Web services

.NET Framework
Windows Application Services
Communication Protocols XML, SOAP, HTTP, HTML
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.NET FrameworkDesigned for loosely-coupled
computing

• Built for Web services
• Integral SOAP XML support
• High-productivity, multi-language development
• Unified, simplified programming model
• Secure, scalable, high-performance execution
• Advanced security and compiler technologies

Visual Studio .NET
.NET Framework
Windows Application Services
Communication Protocols XML, SOAP, HTTP, HTML
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Inside the .NET Framework
VB
C
C
Perl
Python

• Secure, integrated class libraries
• Unifies programming models across languages
• Enables cross-language integration
• Factored for extensibility
• Designed for tools

Web Services
User Interface
ASP.NET
ADO.NET Data and XML
Base Framework
Common Language Runtime
Win32

• Common Language Runtime
• Executes code, maintains security, handles
  component plumbing and dependencies

• ASP.NET
• High-productivity environment for building and
  running Web services

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Common Language Runtime

• Manages running code
• Threading, Memory management
• Eliminates memory management drudgery
• Kills entire classes of bugs (e.g., memory
  corruption, ref counting)
• Auto-versioning, no more DLL Hell
• Scalability, performance, reliability all improve
• Improved security

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.NET Languages

• The Runtime is language neutral
• All .NET languages are first class players
• You can leverage your existing skills
• Common language specification
• Any language can use and extend the .NET
  Framework
• All languages are interoperable
• Microsoft is providing
• Visual Basic, C, C, JScript
• Third-parties are building
• APL, COBOL, Pascal, Eiffel, Haskell, ML, Oberon,
  Perl, Python, Scheme, Smalltalk, Objective
  Camel,

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Framework Classes

• Spans all programming languages
• Enables cross language inheritance and debugging
• Integrates well with tools
• Object-oriented and consistent
• Increases developer productivity by reducing the
  number of APIs to learn
• Common type system built-in
• Extensible
• Makes it easy to add or modify framework features
• Secure
• Allows creation of secure applications

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Data Access ADO.NET

• Leverage ADO.NET to build data-driven
  applications using XML
• Easily pass data across the wire and between
  platforms with XML
• Relational and unstructured data

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ASP.NET

• Server-side Web Forms and Web Services components
  separate code from content
• Developer productivity increases
• Tools easily use ASP.NET
• Any programming language full VB, JScript, C,
  COBOL, Perl, etc.
• 40 to 70 reduction in lines of code
• Compiled
• No-touch deployment system
• Intelligent state management
• Backwards compatible with ASP
• Controls sense client and adapt output HTML,
  DHTML, WML

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The .NET Compact Framework

• Designed specifically for smart devices
• Compatible subset of desktop platform
• Visual Studio.NET used for app development
• Adaptable to different application needs
• Broad availability planned
• Across multiple CPUs
• Across Windows CE and third-party RTOSes
• Across a variety of physical form factors

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.NET Framework OverviewCommon Language Runtime

• Data Access
• File IO
• Data Types
• Collections
• Directory Services
• Graphics and Images
• Messaging
• Network
• XML

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Architecting .NET Applications Use Cases

• Express the Requirements, as Activities, from the
  Perspective of the User

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Architecting .NET Applications Activity Diagrams

• Use Cases Say What the User Can Do
• Activity Diagrams Show How the User Does it

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.NET Framework ArchitectureActivity Diagrams
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Yesterdays Web Applications
Servers Data, Hosts
UI Logic
Biz Logic
Browsers
OS Services
Microsoft provided COM, IIS, and IE
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Todays Web Applications
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.NET Web Applications
Applications Become Programmable Web Services
Standard Browsers
Open Internet Communications Protocols (HTTP,
SMTP, XML, SOAP)
Richer, MoreProductive User Experience
Applications LeverageGlobally-AvailableFederated
Web Services
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Visual Studio .NETThe complete development
environment for building distributed applications
for Windows and the Web

• Most productive tool for creating and consuming
  Web services
• Open, extensible development environment
• High productivity tools for team-based enterprise
  Web development
• End-to-end tools for enterprise lifecycle
  productivity

Visual Studio .NET
.NET Framework
Windows Application Services
Communication Protocols XML, SOAP, HTTP, HTML
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Increased Productivity

• Unified development environment
• Simplifies mixed-language development
• Reduces training costs
• Features accessible from any language
• Visual designers for HTML, XML, data, server-side
  code
• End-to-end debugging support across projects,
  processes, and stored procedures

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Visual Studio Core LanguagesLanguage Enhancements

• Visual Basic
• Object oriented language provides code
  reusability
• Maximum scalability with Free Threading
• Easier maintainability with Structured Exception
  Handling
• C
• Attribute based programming
• Managed Extensions for C
• C
• Modern, object oriented, type-safe language
• Bringing RAD to the C developer

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VS.NET and Web Forms

• Simplify the development of scalable Web
  applications
• Create like VB forms
• Compiled code behind the page
• Applications run on any browser on any platform
• Pure HTML 3.2
• Dial-able browser settings
• More maintainable than script

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VS.NET and Web Services

• Expose any function as a Web service
• No need to learn XML. Interface is automatically
  generated
• Seamless deployment
• Reuse existing Web services
• VS generates the plumbing to invoke the Web
  service
• Full IntelliSense support
• Easily build and consume with any VS language

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.NET Timeline