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ASP.NET MVC Extensibility

ASP.NET MVC Extensibility . Customizing ASP.NET MVC Applications NYC Code Camp 2010-03-06. John Zablocki Development Lead MagazineRadar, Inc. john@zblock.net. We thank the following companies for their gracious sponsorship. Platinum Sponsors. Gold Sponsor. Agenda.

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ASP.NET MVC Extensibility

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  1. ASP.NET MVC Extensibility Customizing ASP.NET MVC Applications NYC Code Camp 2010-03-06 John Zablocki Development Lead MagazineRadar, Inc. john@zblock.net

  2. We thank the following companies for their gracious sponsorship Platinum Sponsors Gold Sponsor

  3. Agenda • ASP.NET Default Architecture • ASP.NET Extension Points • HtmlHelper Extensions • Controller Factories • View Engines • Filters • ASP.NET MVCContrib • Questions

  4. ASP.NET MVC Defaults • View Engine • WebForms View Engine • HtmlHelper • ViewData and TempData • Controllers • Invoked via convention based on route data • ViewData and TempData

  5. HtmlHelper Extension Methods • Html property of MvcViewPage is an instance of HtmlHelper class • Allows for encapsulation of markup and scripts • HtmlHelper instance has access to ViewData and TempData via ViewContext • Methods may return strings or emit markup • <%=Html.Method() %> vs. <% Html.Method(); %> • Demo: Simple JavaScript Dialog Extensions

  6. Custom Controller Factories • Use to create custom IController instances • Often used to work with IoC Containers • Implement IControllerFactory interface • CreateController returns instance of an IController • ReleaseController for cleaning up • Set custom factory in in application start using ControllerBuilder.SetControllerFactory • Demo: PigLatinControllerFactory

  7. Custom View Engine • Allows for non-Web forms view engines • Implement IViewEngine interface • Abstract methods for finding & releasing views • Implement IView interface • Abstract Render method • Custom IViewEngine returns ViewEngineResult that uses custom IView • Demo: A Simple ViewEngine

  8. Action Filters • Allow code to be wrapped around controller actions and view results • Similar to HttpModules • Provide a mechanism for removing cross cutting code (logging, authorization, etc.) from controller classes • Demo: SitePerformanceFilter

  9. ASP.NET MVCContrib • Open source project hosted at CodePlex • Enhancements on top of standard MVC • HtmlHelper extensions • IoC controller factories • Alternative ViewEngines • VS.NET Code snippets and more • Integration points with several other open source projects (NVelocity, Spring.NET, etc.)

  10. MVCContrib UI Helpers • FluentHtml Helpers • Fluent API for generating markup • Helper methods of the View, not HtmlHelper • Type safety with strongly typed view • Grid Helper • HtmlHelper for generating grids of model data • Fluent API • Demo: UI Helpers

  11. MVCContrib Controller Factories • Allows controllers and controller dependencies to be managed by IoC container • Support for several popular containers • Spring.NET • Castle Windsor • Structure Map • Unity • Demo: Spring.NET Controller Factory

  12. MVCContrib View Engines • Provides support for several alternative view engines (using popular templating engines) • Brail • NHaml • NVelocity • Spark • Demo: Brail View Engine

  13. MVContrib Filters • PreCondition Filter • Rescue Filter • Layout Filter • Demo: PreCondition Filter

  14. Resources • http://www.codevoyeur.com – DLR Samples, other OSS samples, presentations and articles • http://www.dllhell.net – My blog • http://mvccontrib.codeplex.com/ • http://www.asp.net/mvc

  15. Questions?

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