Disabling mobile master pages with ASP.NET Friendly URLs

ASP.NET Friendly URLs automatically configures default routes that:

  1. drop the .aspx extension, and
  2. redirect to mobile .Mobile.aspx pages, inclusive of .Mobile.Master pages.

While I want the default routes to drop the .aspx extension, I don’t want the default routes to redirect to a mobile version. Unfortunately, I haven’t been able to find a way to disable the latter with Microsoft.AspNet.FriendlyUrls.Core 1.0.2. I use responsive web design to reflow content on mobile devices and avoid maintaining a second presentation layer with .Mobile.aspx pages. While I can happily ignore any .Mobile.aspx pages, deleting the included Site.Mobile.Master page when installing ASP.NET Friendly URLs or creating any new master pages causes my web application to generate an error that it can’t find a mobile version of the master page.

To resolve this issue, I’ve hacked together a custom WebFormsFriendlyUrlResolver that does not attempt to retrieve a mobile version of a master page (which generates the error):

I then register this custom WebFormsFriendlyUrlResolver in App_Start/RouteConfig.vb in my web application:

I can now remove Site.Mobile.Master, ViewSwitcher.ascx and ignore creating .Mobile.Master pages without causing my web application to error when viewed on mobile devices.

I realise this is a hack, however this is the best solution I’ve been able to come up. Do you know how to disable the default routes for mobile devices? Please send me a comment and enlighten me to a more robust solution.


Thanks to:


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