Inside ASP.NET MVC Framework

Presented on KievAltNet, Network Conference 2011

This a speech dedicated to experienced ASP.NET MVC developers who is curious about - "How things are done?". During the talk we'll make a trip right from HttpRequest back to View rendering and response produce.

Transcript

1. Inside ASP.NET MVC
   framework
   Alexander Beletsky, E-conomic
   http://beletsky.net
   @alexbeletsky
   

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2. ASP.NET MVC is cool!
   Why?
   

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3. Hey, it's open source
   ● See what happens behind the curtain
   ● Improve your knowledge
   ● Learn from best
   ● Super fun
   

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4. ASP.NET or ASP.NET MVC ?
   Have you heard such question?
   

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5. ASP.NET is foundation
   ● Request processing engine
   ● Pushing request thought pipeline
   ● Pipeline consists of Modules
   ● And ends with Handler
   

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6. MvcHanlder - heart of ASP.NET MVC
   ● Implements IHttpAsyncHandler, IHttpHandler
   ● Creates the ControllerFactory
   ● Execute the controller
   

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7. Show me the code
   

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8. Who is responsible for calling MvcHander?
   

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9. Here comes Routing
   ● Included in framework 3.5 SP1
   ● Implements recomendations by Jakob Nielsen
   ● Save us of URL re-writing module
   ● Provides decoupling of URL and page
   

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10. Route = URL + Constraints + IRouteHanlder
    

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11. Show me the code
    

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12. ControllerBuilder & ControllerFactory
    ● ControllerBuilder creates ControllerFactory
    ● ControllerFactory creates Controller
    

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13. Difference in MVC2 and MVC3
    ● MVC2 ControllerBuilder creates factory "directly"
    ● MVC3 ControllerBuilder uses SingleServiceResolver
    ● SingleServiceResolver depends on IDependencyResolver
    

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14. Show me the code
    

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15. IDependencyResolver
    ● Bridge between ASP.NET MVC and IoC container
    ● Very simple interface
    ● Introduce extensibility for many entities
    

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16. Show me the code
    

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17. Controller Execution
    ● Get the name of the Action from Route
    ● Call ControllerActionInvoker to Invoke action
    

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18. Filters
    ● Authorization filters – Implements the IAuthorizationFilter
    attribute.
    ● Action filters – Implements the IActionFilter attribute.
    ● Result filters – Implements the IResultFilter attribute.
    ● Exception filters – Implements the IExceptionFilter attribute.
    

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19. Why use filters?
    ● DRY code
    ● AOP principles in action
    ● Better reuse
    ● Clean code
    ● MVC3 introduces global filters
    

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20. Show me the code
    

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21. Action Results
    ● ViewResult - Represents HTML and markup.
    ● EmptyResult - Represents no result.
    ● RedirectResult - Represents a redirection to a new URL.
    ● JsonResult - Represents a JavaScript Object Notation result
    that can be used in an AJAX application.
    ● JavaScriptResult - Represents a JavaScript script.
    ● ContentResult - Represents a text result.
    ● FileContentResult - Represents a downloadable file (with
    the binary content).
    ● FilePathResult - Represents a downloadable file (with a
    path).
    ● FileStreamResult - Represents a downloadable file (with a
    file stream).
    

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22. Action Result rendering
    ● Extract view name from Route
    ● Find view associated with with Route & Action Result
    ● Render the view
    

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23. THANK YOU!
    http://www.beletsky.net/search/label/InsideMVC
    twitter: @alexbeletsky
    

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