Difference between RouteCollection.Ignore and RouteCollection.IgnoreRoute?
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What's the difference between `RouteCollection.Ignore(url, constraints)` and `RouteCollection.IgnoreRoute(url, constraints)`?

###Background

New MVC projects include this `IgnoreRoute` call in Global.asax `RegisterRoutes` method to skip routing for requests to .axd locations that are handled elsewhere in the ASP.NET system.

    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

I wanted to add an additional ignored route to a project and I started to type out the new line. After `routes.I`, Intellisense pops up with `.Ignore` and `.IgnoreRoute`, both sounding about the same.

According to the MSDN docs, you can see that one is an instance method of the `System.Web.Routing.RouteCollection` class and the other is an extension method on that class from `System.Web.Mvc.RouteCollectionExtensions`.

* `RouteCollection.Ignore`: "Defines a URL pattern that should not be checked for matches against routes if a request URL meets the specified constraints" ([MSDN docs](http://msdn.microsoft.com/en-us/library/dd992982.aspx)).
* `RouteCollection.IgnoreRoute`: "Ignores the specified URL route for the given list of the available routes and a list of constraints" ([MSDN docs](http://msdn.microsoft.com/en-us/library/dd470170.aspx)).

Both take a route URL pattern and a set of constraints restricting the application of the route on that URL pattern.