This document provides an introduction to ASP.NET, including: how it differs from ASP by being object-oriented, compiled, and separating code from content; its goals of improving code quality, deployment, scalability and supporting different devices; benefits like multiple languages, server processing, controls, consistency and deployment; and how it enables web services and mobile controls.

1. Introduction to ASP.NET
Joni
ATL - Bina Nusantara

2. Session Prerequisites
 This session assumes that you familiar
with:
 HTML
 Component-Based or Object-Oriented
Development
 Java, Visual C++ or Visual Basic
programming language

3. Agenda
 How is ASP.NET Different from ASP?
 Object-Oriented Programming
 Why Do We Need a New Version?
 Main Goals of ASP.NET
 Benefit of ASP.NET
 Web Services
 ASP.NET Mobile Controls

4. How is ASP.NET Different from
ASP?
 Not just a new version, a whole new
idea and way of programming web
applications
 Written from ground up
 In many areas, compatibility with ASP
has been broken
 New file extension: “.aspx”

5. Why Do We Need a New
Version?
 ASP is a scripted language
 Interpreted
 Lack of strong types
 Lack of compiled environment
 Only support late-bound calling of method
 Mixing code and HTML content
 Object-Oriented

6. Object-Oriented Programming (OOP)
 Using Object-Oriented Analysis and Design
(OOAD)
 Integrating Process and Data
 Highly extensible and reusable, using
component technology

7. Thinking About Objects
 An Entity with a well-defined boundary and
identity that encapsulates state and behavior
 State: represented by attributes and
relationshipsvariable
 Behavior: represented by operations, methods,
and state machinesfunction
 Represents an entity: physical entity (truck),
conceptual entity (chemical process), or
software entity (Linked List)

8. Thinking About Objects (cont.)
 Reusable software components that
model real-world items
 Look all around you
 People, animals, plants, cars, etc.
 Attributes
 Size, shape, color, weight, etc.
 Behaviors
 Babies cry, crawl, sleep, etc.

9. Main Goals of ASP.NET
 Make code cleaner
 Improve deployment, scalability,
security and reliability
 Provide better support for different
browsers and devices
 Enable a new breed of web applications

10. Benefit of ASP.NET
 Multiple Languages
 Server Processing
 Web Form Control
 Consistency
 User Experience
 Devices
 Code and Content Separation
 Configuration
 Deployment

11. Developer Productivity
 Easy programming model
 Flexible language options
 Great tool support
 Rich class framework

12. Improve Performance and
Scalability
 Compiled execution
 Rich output caching
 Web-Farm session state
 Microsoft .NET outperforms J2EE

13. Performance
 2 – 4 times faster than equivalent
ASP applications

14. Performance
Request
ASP.NET
Page
Page
Compiler
Page
Class
DLL
Generates
Instantiates
Response
Parse

15. Performance

16. Performance

17. Enhanced Reliability
 Memory leak, deadlock and crash
protection

18. Easy Deployment
 “No touch” application development
 Dynamic update of running application
 Easy migration path

19. Web Services
 Programmable application logic
accessible via standard web protocols
 Protocol: Simple Object Access
Protocol (SOAP)

20. Specifications
 Discovery
 UDDI
 DISCO
 Description
 Web Service Description Language
(WSDL)
 Protocol
 SOAP

21. Exposing Web Services
[WebMethod][WebMethod]
public string SayHelloWorld()public string SayHelloWorld()
{{
return "Hello world!";return "Hello world!";
}}

22. ASP.NET Mobile Controls
 Web applications that are usable by
multiple platforms
 Support HTML 3.2, WML 1.1 and
cHTML browsers

23. Demo