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Asp netmvc


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Asp netmvc

  1. 1. Models, Views, Controllers and all that other crazy stuff!
  2. 2. Models, Views, Controllers and all that other crazy stuff!
  3. 3. Agenda What is MVC? Questions You Might be Thinking Demonstration… Code, code, and more code! Questions & Answers
  4. 4. What is MVC? Concept been around since 1979 Separation of Concerns  “Separate content from presentation and data- processing (model) from content.” --Wikipedia
  5. 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. 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. 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. 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. 9. Sources of Inspiration  Scott Guthrie   Scott Hanselman   Phil Haack   Stephen Walther 
  10. 10. Come on… I know you have at least one question that you’ve been dying to ask!
  11. 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. 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. 13. Questions I thought you’d ask… #1c
  14. 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. 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