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Ria 03 - Hello ASP.NET MVC
This document discusses ASP.NET MVC and provides code examples. It begins by explaining that ASP.NET MVC is a framework built on ASP.NET that implements the model-view-controller pattern. It then discusses routing and how requests are processed, showing how the controller accesses the model, which returns data to populate the view. Code examples of a model, controller, and view are also provided. The document aims to explain the basics of ASP.NET MVC through definitions, diagrams, and short code snippets.
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Ria 03 - Hello ASP.NET MVC
- 1. STUDIERENUND DURCHSTARTEN.Author: Dip.-Inf. (FH)Johannes HoppeDatum: 06.10.2010 Thanks to: Eng. KhaledMusaied
- 2. RIA – RichInternet ApplicationsAuthor: Dip.-Inf. (FH) Johannes HoppeDatum: 06.10.2010Thanks to: Eng. KhaledMusaied
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- 4. Whatis ASP.NET MVC?FrameworkASP.NETMVC Framework, built on top of ASP.NET core frameworkimplements the “Model, View and Controller” pattern20.10.2010 Folie 4
- 5. Whatis ASP.NET MVC?MVCPowerComplete control on HTML.Smooth Web 2.0 Development .SEO-friendly URLs.Easy Test Driven Development (TDD).StatelessPrevious ASP.NET technology based on “ViewState”Caused a lot of unnecessary traffic and complexity20.10.2010 Folie 5
- 6. Whatis ASP.NET MVC?20.10.2010Folie 6ModelEncapsulates application’s Data and related LogicsHolds the Data ObjectsOther term: “business layer”Should be “fat” has usually several more layers (later topic)ViewHandles application’s data presentationWhere all the HTML / CSS / JS / … stuff can be foundControllerManages application’s Flow and Navigational logicsShould be “Skinny” as few as possible code
- 7. Whatis ASP.NET MVC?20.10.2010Folie 7<<<<< Always Remember!Skinny Controller,Fat Model
- 8. Whatis ASP.NET MVC?MVC+ RoutingModelViewControllerRouterURL Mapping“Loads” for the right controllerCalls the right method of the controllerOr sends a HTTP 404 error message on no match20.10.2010 Folie 8
- 9. 02One HTTP Requestin Detail20.10.2010 Folie 9
- 10. One HTTP Requestin Detail20.10.2010 Folie 100a) Browser (eg Firefox) opens a TCP connection to the Webserver (Microsoft IIS) on Port 80, sends the following text (text extremely shortened)GET / HTTP/1.1Host: yoursite.comIIS decides which application to call(simplified. in real a lot of more stuff is done here)1) Request arrives at the MVC Application
- 11. One HTTP Requestin Detail20.10.2010 Folie 112) Based upon the Routing table configuration, the URL request is mapped to an Action (method) inside an appropriate Controller
- 12. One HTTP Requestin Detail20.10.2010 Folie 123) Controller accesses the Model to process the data with applying business logics
- 13. One HTTP Requestin Detail20.10.2010 Folie 134) Model accesses database and results are returned back to the controller’s Action
- 14. One HTTP Requestin Detail20.10.2010 Folie 145) Action populates the view with processed data and the View renders the User Interface (HTML)
- 15. One HTTP Requestin Detail20.10.2010 Folie 15IIS sends an HTTP Responseback to the waiting browser:HTTP/1.1 200 OKServer: Microsoft-IIS/6.0Content-Type: text/htmlContent-Length: 999<html><body>…</body></html>
- 16. One HTTP Requestin Detail20.10.2010 Folie 16
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- 18. Code Examples –Model20.10.2010 Folie 18 Note: this only a Data Object, whiteout any business logic!
- 19. Code Examples –Controller20.10.2010 Folie 19
- 20. Code Examples –View (ASP.NET MVC v1)20.10.2010 Folie 20
- 21. Code Examples– Viewoutput (MVC)20.10.2010 Folie 21
- 22. Code Examples– Routes20.10.2010Folie 22URL:http://yoursite.com/Customers/Details/21
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- 24. THANK YOUFOR YOURATTENTION20.10.2010 Folie 24