The document provides an overview of ASP.NET routing and deep dive into ASP.NET MVC routing. It discusses out of the box MVC routing using RouteCollection.MapRoute(), how to customize routing with custom route constraints and route classes, unit testing routes, and adding routing to ASP.NET WebForms applications. Code demonstrations are provided for customizing routes and constraints, unit testing routes, and using routes in WebForms. Helpful links for further information on ASP.NET routing are also included.

1. ASP.NET ROUTING
DEEP DIVE
Stacy Vicknair
Sparkhound
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Stacy Vicknair, MVP
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6. Agenda
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What Is Routing?
Out of the Box ASP.NET MVC Routing
Customizing ASP.NET MVC Routing
Unit Testing ASP.NET MVC Routes
Routing In ASP.NET WebForms
Helpful Links
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7. 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
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8. HttpModules and HttpHandlers
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9. ASP.NET Routing (System.Web.Routing)
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10. ASP.NET MVC Routing (System.Web.Mvc)
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11. Out of the box MVC Routing
• Routes.IgnoreRoute()
– System.Web.Routing.StopRoutingHandler
• Routes.MapRoute()
– System.Web.Mvc.RouteCollectionExtensions
– Parameters
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• 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"}
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12. DEMO – Out of the box MVC Routing
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13. 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
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14. DEMO – RouteConstraints and Routes
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3
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15. Unit Testing Routes
• Use RouteTable.Routes.GetRouteData()
– Requires mocked HttpContext (to provide the URL)
• Enumerate over RouteData to ensure the proper
information is returned
• Alternative is MVCContrib
– string.ShouldMapTo<T>(c => c.Action());
– Not “officially” ported to MVC4 by Ndepend yet.
• Search NuGet for MvcContrib.Mvc4 to find a port
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16. DEMO – Unit Testing with Routes
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17. Adding Routing to ASP.NET WebForms
• In the Global.asax, add a reference to System.Web.Routing
• Add routes via RouteTable.Routes.MapPageRoute()
• Update links to use routes
– RouteUrl
– GetVirtualPath
• Get Routing Data
– RouteValue
– RouteData.Values[]
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18. DEMO – Routes in ASP.NET WebForms
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19. Agenda
•
•
•
•
•
•
What Is Routing?
Out of the Box ASP.NET MVC Routing
Customizing ASP.NET MVC Routing
Unit Testing ASP.NET MVC Routes
Routing In ASP.NET WebForms
Helpful Links
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20. Helpful Links
THE MOST IMPORTANT LINK I COULD EVER TELL YOU:
http://aspnetwebstack.codeplex.com/
http://mvccontrib.codeplex.com/ - MVCContrib
http://msdn.microsoft.com/en-us/library/dd329551.aspx - Webforms
Google or Bing: ASP.NET Routing
Slides / Code will be available at http://www.wtfnext.com
References:
http://www.15seconds.com/Issue/020417.htm
http://msdn.microsoft.com/en-us/library/cc668201.aspx
http://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
http://haacked.com/archive/2007/12/17/testing-routes-in-asp.net-mvc.aspx
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