Overview of .NET Framework
Carlotta Eaton
Associate Professor of IST
New River Community College
Dublin, VA
Slides created by Microsoft
Modified by Carlotta Eaton
Agenda
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Development Challenges
Implementation and Benefits
Application Types
.NET Language Support
Visual Studio® .NET
Development Challenges
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Software Integration
Development and deployment complexity
Multiple programming models
Underlying details not abstracted
Security not inherent
Implementation and Benefits
.NET Framework and Tools
VB
C++
C#
…
J#
Common Language Specification
Web Forms Web Services
Mobile Internet Toolkit
Windows
Forms
ADO .NET and XML
Base Class Library
Common Language Runtime
Operating System
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Visual Studio .NET
ASP .NET
Implementation and Benefits
Common Language Runtime
VB
C++
C#
…
J#
Common Language Specification
Web Forms Web Services
Mobile Internet Toolkit
Windows
Forms
ADO .NET and XML
Base Class Library
Common Language Runtime
Operating System
5
Visual Studio .NET
ASP .NET
Implementation and Benefits
.NET Evolution – Before COM
Application
Code and
data structures
Before COM, applications were
completely separate entities
with little or no integration
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Implementation and Benefits
.NET Evolution - Using COM
COM provides a way for
components to integrate.
However, each
component must provide
the “plumbing” and
objects cannot directly
interact.
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Implementation and Benefits
.NET Evolution - Using .NET Framework
With the .NET Framework
common language runtime,
components are built on a
common substrate. No
“plumbing” is needed and
objects can directly interact
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Implementation and Benefits
Compilation and Execution
Compilation
Source
Code
Language
Compiler
Native
Code
JIT
Compiler
Execution
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Code (IL)
Assembly
Metadata
At installation or the
first time each
method is called
Implementation and Benefits
Robust Environment
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Automatic lifetime management
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Exception handling
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Error handling 1st class and mandatory
Type-safety
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All objects are garbage collected
Helps you avoid memory leaks
No buffer overruns, No unsafe casts,
Uninitialized variables
Helps you avoid hacker attacks
Implementation and Benefits
Simplify Development
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Common Type System
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Enables clean OO programming
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Classes and Interfaces
Constructors, Properties, Methods
Cross-language inheritance
Built-in interoperability
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Common instance and type definition
With COM
With native Win32® DLLs
Implementation and Benefits
Simplify Deployment, Management
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Zero-impact install
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Side-by-side execution
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Multiple component versions can co-exist
Even in the same process
.NET does not use Windows registry
Assemblies
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Applications, components shareable or private
Contain dependency information
Avoid DLL Problems
Implementation and Benefits
.NET Framework Class Library
VB
C++
C#
…
J#
Common Language Specification
Web Forms Web Services
Mobile Internet Toolkit
Windows
Forms
ADO .NET and XML
Base Class Library
Common Language Runtime
Operating System
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Visual Studio .NET
ASP .NET
Implementation and Benefits
.NET Framework Class Library
System.Web
Services
Description
Discovery
Protocols
UI
HtmlControls
WebControls
Caching
Configuration
Security
SessionState
System.Windows.Forms
Design
ComponentModel
System.Drawing
Drawing2D
Imaging
System.Data
OleDb
Common
( >6000 classes)
Printing
Text
System.Xml
SqlClient
SQLTypes
XSLT
XPath
Serialization
System
Collections
Configuration
Diagnostics
Globalization
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IO
Net
Reflection
Resources
Security
ServiceProcess
Text
Threading
Runtime
InteropServices
Remoting
Serialization
Implementation and Benefits
Unified Development Paradigm
Consistent API availability regardless of
language and programming model
.NET Framework
RAD,
Composition,
Delegation
VB Forms
Subclassing,
Power,
Expressiveness
MFC/ATL
Windows API
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Stateless,
Code embedded
in HTML pages
ASP
Implementation and Benefits
Factored and Extensible
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Not a “black box”
.NET classes available through inheritance
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The sealing is much higher
Plug-and-play components and subsystems
Application Types
Console Applications
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Build Command Line Executables
Use Any .NET Language
Batch Processing
Unattended Execution
Very Light Weight
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Hello World ~ 5k
Application Types
Windows Services
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Build Services in any .NET Language
Process Installer
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Writes registry entries
Identity
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Start Type
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User Name
Password
System Account
Manual
Automatic
Disabled
Application Types
Windows Forms
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Desktop Applications
Form Based
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SDI/MDI
Explorer Style Applications
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XCopy
No-Touch (even easier than XCopy!)
Printing
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Docking
Splitters
Deployment
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Database Front-End
Page settings
Print Preview
Application Types
Web Forms
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Much Less Coding
VB-Style Programming Model
Validator Controls
Rich Controls
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Sessions Are Safe to Use!
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Span servers in a web farm
Don’t require cookies
Tracing
Caching
More Events in Global.asax
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DataGrid
DataList
Calendar
Begin Request, End Request, Error, etc.
Application Types
XML Web Services
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Evolution of applications and Web sites
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New integration methodology
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Accessible via standard Internet protocols
HTTP, XML, SOAP, WSDL, UDDI
Framework-provided support
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Cross any operating system in any language
Programmable application components
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Secure interactions across trusted boundaries
Automatic generation of XML, SOAP, WSDL
Application Types
Web Services
The .NET Framework provides
a bi-directional mapping
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Application
Concepts
Web
Framework
Data
XML
Objects
Schema
XSD
Classes
Services
WSDL
Methods
Invocation
SOAP
Calls
.NET Language Support
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Common Language Specification
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Microsoft provided languages
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Visual Basic®, C#, C++, J#, JScript®
3rd-party provided languages
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First class support across the board
APL, Cobol, Component Pascal, Eiffel, Fortran,
Haskell, Mercury, Oberon, Oz, Perl, Python, RPG,
Scheme, Smalltalk, Standard ML
Visual Studio .NET
Integrated Development Environment
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Simplifies mixed-language development
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End-to-end debugging support across
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Single Solution Explorer, Toolbox
IntelliSense® statement completion
Squigglies
Languages
Projects
Processes
Machines
Summary
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Simplified development with unified
programming models
Simplified application deployment and
management
Robust foundation with secure execution
environment
Significant industry support for standards
and multiple languages
MSDN Subscriptions
THE way to get Visual Studio .NET
Visual Studio .NET
MSDN Subscriptions
Enterprise Architect
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Software and data modeling
Enterprise templates
Architectural guidance
MSDN Universal
$2799 new
$2299 renewal/upgrade
Enterprise Developer
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Enterprise lifecycle tools
Team development support
Core .NET Enterprise Servers
Professional
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Tools to build applications
and XML Web services
for Windows and the Web
MSDN Professional
$1199 new
$899 renewal/upgrade
NEW
MSDN Enterprise
$2199 new
$1599 renewal/upgrade
.NET Partners
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Resources
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msdn.microsoft.com
msdn.microsoft.com/seminar
www.gotdotnet.com
www.asp.net
Microsoft Tech·Ed 2002
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New Orleans, LA
April 9 – 13, 2002
msdn.microsoft.com/events/teched
Questions?
© 2002 Microsoft Corporation. All rights reserved.
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