Add Language and country Code in the Url using ASP.Net Routing

Dear ALL;

I need to use Url Routing for ASP.NET WebForms just like the micrsoft web Site do. You type microft.com and it redirects to microsoft/en-us/default.aspx

My application contains a lot of pages so that i need to add one routing for all pages. And also i need to write a default culture in the url if the customer does not write one.