Fabian Vilers Hands on ASP.NET MVC

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 Presentation  What is MVC?  MVC on the web today  ASP.NET MVC  Timeline  Comparison with ASP.NET web forms  What web forms does well  Where web forms doesn’t fit  ASP.NET MVC believes  Should you fear ASP.NET MVC?  The MVC pattern  Model  View  Controller  What’s new in ASP.NET MVC 3  Demos  Q & A ASP.NET MVC – Hands on 3 AGENDA

4 ASP.NET MVC – Hands on PRESENTATION

 The MVC pattern is 30+ years old!  It is a powerful and elegant means of separating concerns  It makes it easier to test application  It promotes parallel development thanks to the loose coupling between the three main components ASP.NET MVC – Hands on 5 WHAT IS MVC?

 Ruby on Rails  Django and Python  Spring, Struts and Java  Zend Framework and PHP  MonoRail  … ASP.NET MVC – Hands on 6 MVC ON THE WEB TODAY

 Separation of application tasks (input logic, business logic, and UI logic), testability, and test-driven development (TDD) by default  An extensible and pluggable framework  A powerful URL-mapping component that lets you build applications that have comprehensible and searchable URLs  Convention over configuration  Don’t repeat yourself, keep it simple (DRY/KISS principles) ASP.NET MVC – Hands on 7 ASP.NET MVC

ASP.NET MVC – Hands on 8 TIMELINE ScottGu sketched out the core of ASP.NET MVC (~100 lines of code) February 2007 Presenstation of Scalene at the Austin ALT.NET conference September 2007 First Community Technology Preview December 2007 ASP.NET MVC 1.0 March 2009 ASP.NET MVC source code was released under the MS-PL April 2009 ASP.NET MVC 2.0 Shipped with Visual Studio 2010 March 2010 ASP.NET MVC 3.0 Shipped with Visual Studio 2010 January 2011

9 ASP.NET MVC – Hands on COMPARISON WITH ASP.NET WEB FORMS

 Represent a Page as control tree  Give these server-side controls events like their desktop counterparts  Hide as much HTTP and HTML as is reasonable  Make state management as transparent as possible ASP.NET MVC – Hands on 10 WHAT WEB FORMS DOES WELL

 ViewState is powerful, but it has its drawbacks (weight,…)  Page life cycle can be a nightmare  Limited control over HTML  Client IDs and the ctl00$ContentPlaceHolder1$UserControl1$TextBox1 syndrome  It’s nearly impossible to run a Web Form through its life cycle outside IIS ASP.NET MVC – Hands on 11 WHERE WEB FORMS DOESN’T FIT

 Guiding tenets:  Be extensible, maintainable, and flexible  Be testable  Get out of the user’s way when necessary  Serving methods, not files  Separation of concerns  ScottHa said: « ASP.NET MVC is Web Forms unplugged » ASP.NET MVC – Hands on 12 ASP.NET MVC BELIEVES

 ASP.NET MVC is built on top of ASP.NET  ASP.NET MVC is not a replacement for anything  It is just an alternative  It’s a totally different approach SHOULD YOU FEAR ASP.NET MVC? ASP.NET MVC – Hands on 13

14 ASP.NET MVC – Hands on THE MVC PATTERN

 Model  objects are the parts of the application that implement the logic for the application’s data domain  View  components that display the application’s user interface  Controller  components that handle user interaction, work with the model, and ultimately select a view to render ASP.NET MVC – Hands on 15 THE MVC PATTERN

 Business logic and validation of the application’s data domain  Totally independant from the views or the controllers  Model state can be stored in memory, database, XML files,… ASP.NET MVC – Hands on 16 MODEL

 Application’s user interface using data from the model  No interaction with the models or the controllers  Views can be strongly typed  Almost no code ASP.NET MVC – Hands on 17 VIEW

 Handle user interaction  Query the model  Select the right view to render ASP.NET MVC – Hands on 18 CONTROLLER

19 ASP.NET MVC – Hands on WHAT’S NEW IN ASP.NET MVC 3

 Razor View Engine  Support for multiple view engine  Global action filters  « ViewBag » property  New « ActionResult » types  JavaScript and AJAX improvements  Client-side validation enabled by default  Remote validator  JSON binding support  Data annotations metadata attributes  Validation interfaces  Dependency injection improvements  Partial-Page Output Caching  Granular Control over Request Validation  … ASP.NET MVC – Hands on 20 WHAT’S NEW IN ASP.NET MVC 3

21 ASP.NET MVC – Hands on DEMOS

 Using the ASP.NET MVC 3 template and playing around with Razor  First data access and display a list of authors  Manage authors  Display a list of books  Create and edit a book using the ViewModel pattern  Source code available on: ASP.NET MVC – Hands on 22 BOOK STORE

23 ASP.NET MVC – Hands on Q & A

ASP.NET MVC – Hands on 24