ASP.NET Routing with MVC Deep Dive

2

About Me

Stacy Vicknair, MVP MCPDDevelopment Consultant for Sparkhound

Blog - http://www.wtfnext.comBRAG - http://www.braglunch.comTM - http://www.batonrougespeaks.com

Twitter: @svicknEmail: stacy.vicknair@sparkhound.com

3

Agenda

− What is routing? − Out of the box ASP.NET MVC routing

− Demo− Customizing ASP.NET MVC routing

− Demo: RouteConstraints and Routes− Routing concerns

4

What is ASP.NET Routing?

“ASP.NET routing enables you to use URLs that do not have to map to specific files in a Web site.”

- http://msdn.microsoft.com/en-us/library/cc668201.aspx

www.mysite.com/categories.aspx?categoryName=sports

www.mysite.com/categories/sports

5

HttpModules and HttpHandlers

Http Module 1

Http Module 2

Http Module 3

Http Handler

Http Handler

Http Handler

6

ASP.NET Routing (System.Web.Routing)

UrlRoutingModuleIHttpModule

PageRouteHandlerIRouteHandler

UrlRoutingHandlerIHttpHandler

Content (Page, etc.)

7

DefaultControllerFactoryIControllerFactory

ASP.NET MVC Routing (System.Web.Mvc)

UrlRoutingModuleIHttpModule

MvcRouteHandlerIRouteHandler

MvcHandlerUrlRoutingHandler

MyController.Execute()Controller

8

Out of the box MVC Routing

− Routes.IgnoreRoute()− System.Web.Routing.StopRoutingHandler

− Routes.MapRoute()− System.Web.Mvc.RouteCollectionExtensions− Parameters

− string name – “MyUniqueName”− string url – “{controller}/{action}/{id}”− Object defaults - new { controller = "Home", action = "Index”} − Object constraints – new {id = “[0-9]+”}− string[] namespaces - new[] { "Myproject.MyControllers"}

9

DEMO – Out of the box MVC Routing

10

Customizing ASP.NET MVC Routing

− Three main areas for routing customization− RouteConstraints

− Implementing constraints that require more logic than RegEx− Created by implementing System.Web.Routing.IRouteConstraint

− Routes− Allow for control over how route data is parsed or route paths

are determined− Created by subclassing System.Web.Routing.RouteBase− Default is Route ex. RouteCollection.Add(new Route(…))

− RouteHandlers− Allow for preprocessing before default RouteHandler behavior

− ex. RouteData modifications

11

DEMO – RouteConstraints and Routes

12

Routing Concerns

− IIS6 requires special attention− Add .mvc extension to aspnet_isapi.dll in ISAPI mapping− “{controller}.mvc/{action}/{id}”− Can use wildcard mapping, but performance is

questionable

13

Agenda

− What is routing? − Out of the box ASP.NET MVC routing

− Demo− Customizing ASP.NET MVC routing

− Demo: RouteConstraints and Routes− Routing concerns

14

Helpful Links

Google or Bing: ASP.NET Routing

http://www.15seconds.com/Issue/020417.htmhttp://msdn.microsoft.com/en-us/library/

cc668201.aspxhttp://blogs.msdn.com/b/alikl/archive/2009/04/02/

how-asp-net-mvc-works-for-aspiring-architects-2.aspx

http://blog.didsburydesign.com/2010/02/how-to-allow-hyphens-in-urls-using-asp-net-mvc-2/

http://stackoverflow.com/questions/1107507/asp-net-mvc-custom-route-handler-constraint

15

About Me

Stacy Vicknair, MVP MCPDDevelopment Consultant for Sparkhound

Blog - http://www.wtfnext.comBRAG - http://www.braglunch.comTM - http://www.batonrougespeaks.com

Twitter: @svicknEmail: stacy.vicknair@sparkhound.com