1. Models, Views, Controllers and all that other crazy stuff!

2. Models, Views, Controllers and all that other crazy stuff!

3. Agenda
 What is MVC?
 Questions You Might be Thinking
 Demonstration…
 Code, code, and more code!
 Questions & Answers

4. What is MVC?
 Concept been around since 1979
 Separation of Concerns
 “Separate content from presentation and data-
processing (model) from content.” --Wikipedia

5. What is MVC?
 What do I gain from ASP.NET MVC?
 Clean separation of concerns
 Testability & TDD
 Highly extensible and pluggable
 Powerful URL mapping for clean REST-ful URLs
 Can leverage existing ASP.NET features
 Authentication, Authorization, & Roles
 Session, State Management, Output & Data Caching
 Localization, etc…
 Total control over the rendered View

6. What is MVC?
 What do I loose from ASP.NET MVC?
 ASP.NET Web Form post-back model
 Dependency of View State
 Initially Rich Controls may be more difficult
 Tons of HTML being generated for you
 Big learning curve for .NET Web Developers

7. Questions You Might Be Thinking
 Will ASP.NET MVC replace ASP.NET Web
Forms?
 How would I go about choosing between
using ASP.NET MVC or ASP.NET Web Forms?
 Is ASP.NET MVC ready for production?
 When will ASP.NET MVC be officially
released?

8. Demonstration
 Pet Shop 5.0
 Technologies Used
 Visual Studio Team System 2008
 .NET 3.5 using C# 3.0 & LINQ to SQL
 ASP.NET MVC Preview 5
 Microsoft SQL Server 2005 Express
 jQuery v.1.2.6
 Flexigrid
 jGrowl

9. Sources of Inspiration
 Scott Guthrie
 http://weblogs.asp.net/Scottgu/
 Scott Hanselman
 http://www.hanselman.com/blog/
 Phil Haack
 http://haacked.com/
 Stephen Walther
 http://weblogs.asp.net/StephenWalther/

10. Come on… I know you have at least one question
that you’ve been dying to ask!

11. Questions I thought you’d ask… #1a
 What is the difference between MVC & MVP
 And no… I’m not referring to Microsoft’s Most
Valuable Professional (of which you can find some in
here)

12. Questions I thought you’d ask… #1b
 What is the difference between MVC & MVP
 MVC
 Controller responsible for determining which view is
displayed in response to any action.
 The view does not directly bind to the model.
 The view usually will not have any logic in the code
behind.
 MVP
 Presenter contains the UI business logic for the view.
 All actions from the view delegate to the presenter.
 Tends to be a very natural pattern for achieving
separated presentation in ASP.NET Web Forms.

13. Questions I thought you’d ask… #1c

14. Questions I thought you’d ask… #2
 What is the DRY Principle?
 It means “Don’t Repeat Yourself”, but it isn’t
necessarily talking about the Copy/Paste Code
Smell… that is better described by the “Once and
Only Once” (OAOO) principle.
 An example of something really DRY is XSLT…
where knowledge is not repeated.
 “The DRY code philosophy is stated as ‘Every piece
of knowledge must have a single, unambiguous,
authoritative representation within a system.’”
--Wikipedia

15. Questions I thought you’d ask… #3
 What is the PRG Pattern?
 “…instead of returning an HTML page directly, the
POST operation returns a redirection command…
instructing the browser to load a different page
using an HTTP GET request. The result page can
then safely be bookmarked or reloaded without
unexpected side effects.” --Wikipedia