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Componentizing ASP.NET MVC: Best Practices and Techniques for Developers

Explore the essential techniques for componentizing ASP.NET MVC applications with insights from Simone Chiaretta, an experienced developer at Avanade and Microsoft MVP. This article covers the use of RenderPartial, Action Filters, and the importance of encapsulating data creation within controllers. Understand how to streamline your views and improve testability by leveraging HTML Helpers and Partial Views. Perfect for developers looking to enhance their understanding of ASP.NET MVC architecture and componentization methods.

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Componentizing ASP.NET MVC: Best Practices and Techniques for Developers

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  1. Componentizing ASP.NET MVC Simone ChiarettaSolution Developer, Avanade http://codeclimber.net.nz 27 Giugno 2009

  2. Who the hell am I? • Simone Chiaretta • Lavoro per Avanade Italy • Microsoft MVP ASP.NET • Blogger – http://codeclimber.net.nz • Founder of UGIALT.NET • OpenSource developer • Climber • All Around Nice Guy

  3. How to componentize ASP.NET MVC • RenderPartial • The controller must “create” all the data needed by all components • RenderAction (MvcFutures) • Smells (the view knows about the controller) • Difficult to test that the component is displayed • Custom HtmlHelpers • Good for building HTML, must not have logic BAD BAD BAD • RenderPartial + Action Filters • Data “creation” is encapsulated, view is encapsulated GOOD

  4. What’s an action Filter • It’s an Attribute • Allows code execution (AOP style) • During the Authentication phase • When an Exception is thrown • Before an Action • After an Action • Before the rendering of a View • After the rendering of a View • “Core” filters • Authorize • HandleException • OutputCache

  5. Action Filter + Render Partial • Controller: • Executes the code only for its “main concern” and “create” the main data • View: • Shows the “main” output • Calls all the PartialViews • Action Filters: • Load data for the partial views • Partial views • Shows the data retrieved by the Action Filters

  6. [DEMO] Action Filter + Render Partial

  7. The Shameless Plug: Beginning ASP.NET MVC • Simone Chiaretta e Keyvan Nayyeri • Released on: August 3° 2009 • Already for pre-sale on Amazon • TOC: • MVC • Testing • And more... • http://www.amazon.com/Beginning-ASP-NET-MVC-Simone-Chiaretta/dp/047043399X/

  8. Contacts – Simone Chiaretta • MSN: simone_ch@hotmail.com • Blog: • English: http://codeclimber.net.nz/ • Italiano: http://blogs.ugidotnet.org/piyo/ • Twitter: http://twitter.com/simonech

  9. Q&A

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