Routing in ASP.NET MVC

Enables you to map URLs that does not map to any specific files in a web site. You should add default MVC routes to Application_Start event in Global.asax file as shown in the example below

	public class MvcApplication : System.Web.HttpApplication
	{
	public static void RegisterRoutes(RouteCollection routes)
	{
	routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
	routes.MapRoute(
	"Default", // Route name
	"{controller}/{action}/{id}", // URL with parameters
	new { controller = "Home", action = "Index", id = "" } // Parameter defaults
	);
	}
	protected void Application_Start()
	{
	RegisterRoutes(RouteTable.Routes);
	}
	}

view raw routing.cs hosted with ❤ by GitHub

check MSDN page ASP.NET routing for more information.

RouteCollection

Provides a collection of routes for ASP.NET routing. This class is derived from Collection<RouteBase>. 

You can define custom routes by using RouteBase class. See a tutorial.

Attribute routing

introduced in Web API 2 to overcome challenges faced with creating routes with conventional based routings. Uses attributes to define routes.

References

Google search - ASP.NET MVC Routing 

UrlRoutingHandler MSDN 

http://stackoverflow.com/questions/1192446/understanding-routing-in-global-asax-asp-net-mvc

http://msdn.microsoft.com/en-us/library/cc668201%28v=vs.100%29.aspx

http://www.asp.net/mvc/overview/controllers-and-routing